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Friday, October 19, 2012
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WHAT ARE THE ARIZONA DOT Requirements
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§ 396.19Inspector qualifications.
(a) Motor carriers and intermodal equipment providers must ensure that individuals performing annual inspections under § 396.17(d) or (e) are qualified as follows:(1) Understand the inspection criteria set forth in part 393 and appendix G of this subchapter and can identify defective components;(2) Are knowledgeable of and have mastered the methods, procedures, tools and equipment used when performing an inspection; and(3) Are capable of performing an inspection by reason of experience, training, or both as follows:(i) Successfully completed a Federal-or State-sponsored training program or have a certificate from a State or Canadian Province that qualifies the individuals to perform commercial motor vehicle safety inspections, or(ii) Have a combination of training or experience totaling at least 1 year. Such training or experience may consist of:(A) Participation in a commercial motor vehicle manufacturer-sponsored training program or similar commercial training program designed to train students in commercial motor vehicle operation and maintenance;(B) Experience as a mechanic or inspector in a motor carrier or intermodal equipment maintenance program;(C) Experience as a mechanic or inspector in commercial motor vehicle maintenance at a commercial garage, fleet leasing company, or similar facility; or(D) Experience as a commercial motor vehicle inspector for a State, Provincial or Federal government.(b) Motor carriers and intermodal equipment providers must retain evidence of that individual's qualifications under this section. They must retain this evidence for the period during which that individual is performing annual motor vehicle inspections for the motor carrier or intermodal equipment provider, and for one year thereafter. However, motor carriers and intermodal equipment providers do not have to maintain documentation of inspector qualifications for those inspections performed either as part of a State periodic inspection program or at the roadside as part of a random roadside inspection program
§ 396.25Qualifications of brake inspectors.
(a) Motor carriers and intermodal equipment providers must ensure that all inspections, maintenance, repairs or service to the brakes of its commercial motor vehicles, are performed in compliance with the requirements of this section. (b) For purposes of this section, brake inspector means any employee of a motor carrier or intermodal equipment provider who is responsible for ensuring that all brake inspections, maintenance, service, or repairs to any commercial motor vehicle, subject to the motor carrier's or intermodal equipment provider's control, meet the applicable Federal standards. (c) No motor carrier or intermodal equipment provider may require or permit any employee who does not meet the minimum brake inspector qualifications of paragraph (d) of this section to be responsible for the inspection, maintenance, service or repairs of any brakes on its commercial motor vehicles.(d) The motor carrier or intermodal equipment provider must ensure that each brake inspector is qualified as follows:(1) Understands the brake service or inspection task to be accomplished and can perform that task; and(2) Is knowledgeable of and has mastered the methods, procedures, tools and equipment used when performing an assigned brake service or inspection task; and(3) Is capable of performing the assigned brake service or inspection by reason of experience, training, or both as follows: (i) Has successfully completed an apprenticeship program sponsored by a State, a Canadian Province, a Federal agency or a labor union, or a training program approved by a State, Provincial or Federal agency, or has a certificate from a State or Canadian Province that qualifies the person to perform the assigned brake service or inspection task (including passage of Commercial Driver's License air brake tests in the case of a brake inspection); or
Code of Federal Regulations499
(ii) Has brake-related training or experience or a combination thereof totaling at least one year. Such training or experience may consist of:(A) Participation in a training program sponsored by a brake or vehicle manufacturer or similar commercial training program designed to train students in brake maintenance or inspection similar to the assigned brake service or inspection tasks; or(B) Experience performing brake maintenance or inspection similar to the assigned brake service or inspection task in a motor carrier or intermodal equipment provider maintenance program; or(C) Experience performing brake maintenance or inspection similar to the assigned brake service or inspection task at a commercial garage, fleet leasing company, or similar facility.(e) No motor carrier or intermodal equipment provider may employ any person as a brake inspector unless the evidence of the inspector's qualifications, required under this section, is maintained by the motor carrier or intermodal equipment provider at its principal place of business, or at the location at which the brake inspector is employed. The evidence must be maintained for the period during which the brake inspector is employed in that capacity and for one year thereafter. However, motor carriers and intermodal equipment providers do not have to maintain evidence of qualifications to inspect air brake systems for such inspections performed by persons who have passed the air brake knowledge and skills test for a Commercial Driver's License.
§ 396.17Periodic inspection.
(a) Every commercial motor vehicle must be inspected as required by this section. The inspection must include, at a minimum, the parts and accessories set forth in appendix G of this subchapter. The term commercial motor vehicle includes each vehicle in a combination vehicle. For example, for a tractor semitrailer, full trailer combination, the tractor, semitrailer, and the full trailer (including the converter dolly if so equipped) must each be inspected. (b) Except as provided in § 396.23 and this paragraph, motor carriers must inspect or cause to be inspected all motor vehicles subject to their control. Intermodal equipment providers must inspect or cause to be inspected intermodal equipment that is interchanged or intended for interchange to motor carriers in intermodal transportation.(c) A motor carrier must not use a commercial motor vehicle, and an intermodal equipment provider must not tender equipment to a motor carrier for interchange, unless each component identified in appendix G of this subchapter has passed an inspection in accordance with the terms of this section at least once during the preceding 12 months and documentation of such inspection is on the vehicle. The documentation may be:(1) The inspection report prepared in accordance with § 396.21(a), or(2) Other forms of documentation, based on the inspection report (e.g., sticker or decal), which contains the following information:(i) The date of inspection;(ii) Name and address of the motor carrier, intermodal equipment provider, or other entity where the inspection report is maintained;(iii) Information uniquely identifying the vehicle inspected if not clearly marked on the motor vehicle; and(iv) A certification that the vehicle has passed an inspection in accordance with § 396.17.(d) A motor carrier may perform the required annual inspection for vehicles under the carrier's control which are not subject to an inspection under §396.23(b)(1). An intermodal equipment provider may perform the required annual inspection for intermodal equipment interchanged or intended for interchange to motor carriers that are not subject to an inspection under § 396.23(b)(1).(e) In lieu of the self-inspection provided for in paragraph (d) of this section, a motor carrier or intermodal equipment provider responsible for the inspection may choose to have a commercial garage, fleet leasing company, truck stop, or other similar commercial business perform the inspection as its agent, provided that business operates and maintains facilities appropriate for commercial vehicle inspections and it employs qualified inspectors, as required by §396.19.(f) Vehicles passing roadside or periodic inspections performed under the auspices of any State government or equivalent jurisdiction or the FMCSA, meeting the minimum standards contained in appendix G of this subchapter, will be considered to have met the requirements of an annual inspection for a period of 12 months commencing from the last day of the month in which the inspection was performed. If a vehicle is subject to a mandatory State inspection program, as provided in § 396.23(b)(1), a roadside inspection may only be considered equivalent if it complies with the requirements of that program. (g) It is the responsibility of the motor carrier or intermodal equipment provider to ensure that all parts and accessories on commercial motor vehicles intended for use in interstate commerce for which they are responsible are maintained at, or promptly repaired to, the minimum standards set forth in appendix G to this subchapter.
Code of Federal Regulations497
(h) Failure to perform properly the annual inspection required by this section shall cause the motor carrier or intermodal equipment provider to be subject to the penalty provisions of 49 U.S.C. 521(b).
Appendix G to Subchapter B—
Minimum periodic inspection standards A vehicle does not pass an inspection if it has one of the following defects or deficiencies:
1. Brake System.
a. Service brakes.
(1) Absence of braking action on any axle required to have brakes upon application of the service brakes (such as missing brakes or brake shoe(s) failing to move upon application of a wedge, S-cam, cam, or disc brake).
(2) Missing or broken mechanical components including: shoes, lining, pads, springs, anchor pins, spiders, cam rollers, push-rods, and air chamber mounting bolts.
(3) Loose brake components including air chambers, spiders, and cam shaft support brackets.
(4) Audible air leak at brake chamber (Example-ruptured diaphragm, loose chamber clamp, etc.).
(5) Readjustment limits. The maximum stroke at which brakes should be readjusted is given below. Any brake1/4 and inch; or more past the readjustment limit or any two brakes less than1/4 and inch; beyond the readjustment limit shall be cause for rejection. Stroke shall be measured with engine off and reservoir pressure of 80 to 90 psi with brakes fully applied.
Bolt Type Brake Chamber Data Type Effective area (sq. in.) Outside dia. (in.) Maximum stroke at which brakes should be readjusted
A 12 6 15/16 1 3/8
B 24 9 3/16 1 3/4
C 16 8 1/16 1 3/4
D 6 5 1/4 1 1/4
E 9 6 3/16 1 3/8
F 36 11 2 1/4
G 30 9 7/8 2
Rotochamber Data Type Effective area (sq. in.) Outside dia. (in.) Maximum stroke at which brakes should be readjusted
9 9 4 9/32 1 1/2
12 12 4 13/16 1 1/2
16 16 5 13/32 2
20 20 5 15/16 2
24 24 6 13/32 2
30 30 7 1/16 2 1/4
36 36 7 5/8 2 3/4
50 50 8 7/8 3
Clamp Type Brake Chamber Data Type Effective area (sq. in.) Outside dia. (in.) Maximum stroke at which brakes should be readjusted
6 6 4 1/2 1 1/4
9 9 5 1/4 1 3/8
12 12 5 11/16 1 3/8
16 16 6 3/8 1 3/4
20 20 6 25/32 1 3/4
24 24 7 7/32 11 3/4
30 30 8 3/32 2
36 36 9 2 1/4
(2 and inch; for long stroke design).Wedge Brake Data —Movement of the scribe mark on the lining shall not exceed1/16inch.
(6) Brake linings or pads.(a) Lining or pad is not firmly attached to the shoe;(b) Saturated with oil, grease, or brake fluid; or(c) Non-steering axles: Lining with a thickness less than1/4inch at the shoe center for air drum brakes,1/16inch or less at the shoe center for hydraulic and electric drum brakes, and less than1/8inch for air disc brakes.(d) Steering axles: Lining with a thickness less than1/4inch at the shoe center for drum brakes, less than1/8inch for air disc brakes and1/16inch or less for hydraulic disc and electric brakes.
(7) Missing brake on any axle required to have brakes.
(8) Mismatch across any power unit steering axle of:(a) Air chamber sizes.
(b) Slack adjuster length.b. Parking Brake System. No brakes on the vehicle or combination are applied upon actuation of the parking brake control, including driveline hand controlled parking brakes.c. Brake Drums or Rotors.(1) With any external crack or cracks that open upon brake application (do not confuse short hairline heat check cracks with flexural cracks).(2) Any portion of the drum or rotor missing or in danger of falling away.d.
Brake Hose.
(1) Hose with any damage extending through the outer reinforcement ply. (Rubber impregnated fabric cover is not a reinforcement ply). (Thermoplastic nylon may have braid reinforcement or color difference between cover and inner tube. Exposure of second color is cause for rejection.
(2) Bulge or swelling when air pressure is applied.
(3) Any audible leaks.
(4) Two hoses improperly joined (such as a splice made by sliding the hose ends over a piece of tubing and clamping the hose to the tube)
.(5) Air hose cracked, broken or crimped.
e.
Brake Tubing.(1) Any audible leak.
(2) Tubing cracked, damaged by heat, broken or crimped.
f.
Low Pressure Warning Device missing, inoperative, or does not operate at 55 psi and below, or1/2the governor cut-out pressure, whichever is less.
g.
Tractor Protection Valve. Inoperable or missing tractor protection valve(s) on power unit
.h.
Air Compressor.
(1) Compressor drive belts in condition of impending or probable failure.
(2) Loose compressor mounting bolts.
(3) Cracked, broken or loose pulley.
(4) Cracked or broken mounting brackets, braces or adapters.i. Electric Brakes.
(1) Absence of braking action on any wheel required to have brakes.
(2) Missing or inoperable breakaway braking device.
j. Hydraulic Brakes. (Including Power Assist Over Hydraulic and Engine Drive Hydraulic Booster).
(1) Master cylinder less than1/4full.
(2) No pedal reserve with engine running except by pumping pedal.
(3) Power assist unit fails to operate.
(4) Seeping or swelling brake hose(s) under application of pressure.
(5) Missing or inoperative check valve.
(6) Has any visually observed leaking hydraulic fluid in the brake system.
(7) Has hydraulic hose(s) abraded (chafed) through outer cover-to-fabric layer.
(8) Fluid lines or connections leaking, restricted, crimped, cracked or broken.
(9) Brake failure or low fluid warning light on and/or inoperative.
k. Vacuum Systems. Any vacuum system which:
(1) Has insufficient vacuum reserve to permit one full brake application after engine is shut off.
(2) Has vacuum hose(s) or line(s) restricted, abraded (chafed) through outer cover to cord ply, crimped, cracked, broken or has collapse of vacuum hose(s) when vacuum is applied.
(3) Lacks an operative low-vacuum warning device as required.
2. Coupling devices.a. Fifth Wheels.
(1) Mounting to frame.(a) Any fasteners missing or ineffective.(b) Any movement between mounting components.(c) Any mounting angle iron cracked or broken.
(2) Mounting plates and pivot brackets.(a) Any fasteners missing or ineffective.(b) Any welds or parent metal cracked.(c) More than3/8inch horizontal movement between pivot bracket pin and bracket.(d) Pivot bracket pin missing or not secured.
(3) Sliders.(a) Any latching fasteners missing or ineffective.(b) Any fore or aft stop missing or not securely attached.(c) Movement more than3/8inch between slider bracket and slider base.(d) Any slider component cracked in parent metal or weld.
(4) Lower coupler.(a) Horizontal movement between the upper and lower fifth wheel halves exceeds1/2inch.
(b) Operating handle not in closed or locked position.
(c) Kingpin not properly engaged.
(d) Separation between upper and lower coupler allowing light to show through from side to side.
(e) Cracks in the fifth wheel plate. Exceptions: Cracks in fifth wheel approach ramps and casting shrinkage cracks in the ribs of the body of a cast fifth wheel.
(f) Locking mechanism parts missing, broken, or deformed to the extent the kingpin is not securely held.
b.
Pintle Hooks
.(1) Mounting to frame.
(a) Any missing or ineffective fasteners (a fastener is not considered missing if there is an empty hole in the device but no corresponding hole in the frame or vice versa).
(b) Mounting surface cracks extending from point of attachment (e.g., cracks in the frame at mounting bolt holes).
(c) Loose mounting.
(d) Frame cross member providing pintle hook attachment cracked.
(2) Integrity.
(a) Cracks anywhere in pintle hook assembly.
(b) Any welded repairs to the pintle hook
(c) Any part of the horn section reduced by more than 20%.(d) Latch insecure.
c. Drawbar/Towbar Eye.
(1) Mounting.(a) Any cracks in attachment welds.(b) Any missing or ineffective fasteners.
(2) Integrity.(a) Any cracks.(b) Any part of the eye reduced by more than 20%.d. Drawbar/Towbar Tongue.
(1) Slider (power or manual).
(a) Ineffective latching mechanism
(b) Missing or ineffective stop.
(c) Movement of more than1/4inch between slider and housing.
(d) Any leaking, air or hydraulic cylinders, hoses, or chambers (other than slight oil weeping normal with hydraulic seals).
(2) Integrity.
(a) Any cracks.
(b) Movement of1/4inch between subframe and drawbar at point of attachment.
e. Safety Devices.(1) Safety devices missing.(2) Unattached or incapable of secure attachment.
(3) Chains and hooks.
(a) Worn to the extent of a measurable reduction in link cross section.
(b) Improper repairs including welding, wire, small bolts, rope and tape.
(4) Cable.(a) Kinked or broken cable strands.(b) Improper clamps or clamping.f. Saddle-Mounts.
(1) Method of attachment.
(a) Any missing or ineffective fasteners.
(b) Loose mountings.
(c) Any cracks or breaks in a stress or load bearing member.
(d) Horizontal movement between upper and lower saddle-mount halves exceeds1/4inch.
3. Exhaust System.
a. Any exhaust system determined to be leaking at a point forward of or directly below the driver/sleeper compartment.
b. A bus exhaust system leaking or discharging to the atmosphere:
(1) Gasoline powered—excess of 6 inches forward of the rearmost part of the bus.
(2) Other than gasoline powered—in excess of 15 inches forward of the rearmost part of the bus
(3) Other than gasoline powered—forward of a door or window designed to be opened. (exception: Emergency exits).
c. No part of the exhaust system of any motor vehicle shall be so located as would be likely to result in burning, charring, or damaging the electrical wiring, the fuel supply, or any combustible part of the motor vehicle.
4. Fuel System.a. A fuel system with a visable leak at any point.
b. A fuel tank filler cap missing.
c. A fuel tank not securely attached to the motor vehicle by reason of loose, broken or missing mounting bolts or brackets (some fuel tanks use springs or rubber bushings to permit movement).
5. Lighting Devices. All lighting devices and reflectors required by Section 393 shall be operable.6.
Safe Loading.
a. Part(s) of vehicle or condition of loading such that the spare tire or any part of the load or dunnage can fall onto the roadway.
b. Protection Against Shifting Cargo—Any vehicle without a front-end structure or equivalent device as required.
c. Container securement devices on intermodal equipment—All devices used to secure an intermodal container to a chassis, including rails or support frames, tiedown bolsters, locking pins, clevises, clamps, and hooks that are cracked, broken, loose, or missing.
7. Steering Mechanism.a. Steering Wheel Free Play (on vehicles equipped with power steering the engine must be running).
Steering wheel diameter Manual steering system Power steering system
16 inch; 2 inch; 4 1/2inch;
18inch; 2 1/4inch; 4 3/4inch;
20inch; 2 1/2inch; 5 1/4inch;
22inch; 2 3/4inch; 5 3/4inch;
b. Steering Column.
(1) Any absence or looseness of U-bolt(s) or positioning part(s).
(2) Worn, faulty or obviously repair welded universal joint(s).
(3) Steering wheel not properly secured.
c. Front Axle Beam and All Steering Components Other Than Steering Column.
(1) Any crack(s).
(2) Any obvious welded repair(s).
d. Steering Gear Box.
(1) Any mounting bolt(s) loose or missing.
(2) Any crack(s) in gear box or mounting brackets.
e. Pitman Arm. Any looseness of the pitman arm on the steering gear output shaft.
f. Power Steering. Auxiliary power assist cylinder loose.g. Ball and Socket Joints.
(1) Any movement under steering load of a stud nut.
(2) Any motion, other than rotational, between any linkage member and its attachment point of more than1/4inch.h. Tie Rods and Drag Links.
(1) Loose clamp(s) or clamp bolt(s) on tie rods or drag links.
(2) Any looseness in any threaded joint.
i. Nuts. Nut(s) loose or missing on tie rods, pitman arm, drag link, steering arm or tie rod arm.
j. Steering System. Any modification or other condition that interferes with free movement of any steering component.
8. Suspension.a. Any U-bolt(s), spring hanger(s), or other axle positioning part(s) cracked, broken, loose or missing resulting in shifting of an axle from its normal position. (After a turn, lateral axle displacement is normal with some suspensions. Forward or rearward operation in a straight line will cause the axle to return to alignment).
b. Spring Assembly.
(1) Any leaves in a leaf spring assembly broken or missing.
(2) Any broken main leaf in a leaf spring assembly. (Includes assembly with more than one main spring).
(3) Coil spring broken.
(4) Rubber spring missing.
(5) One or more leaves displaced in a manner that could result in contact with a tire, rim, brake drum or frame.
(6) Broken torsion bar spring in a torsion bar suspension.
(7) Deflated air suspension, i.e., system failure, leak, etc.c. Torque, Radius or Tracking Components. Any part of a torque, radius or tracking component assembly or any part used for attaching the same to the vehicle frame or axle that is cracked, loose, broken or missing. (Does not apply to loose bushings in torque or track rods.)
9. Frame.a. Frame Members.
(1) Any cracked, broken, loose, or sagging frame member.
(2) Any loose or missing fasteners including fasteners attaching functional component such as engine, transmission, steering gear, suspension, body parts, and fifth wheel.
b. Tire and Wheel Clearance. Any condition, including loading, that causes the body or frame to be in contact with a tire or any part of the wheel assemblies.
c. (1) Adjustable Axle Assemblies (Sliding Subframes). Adjustable axle assembly with locking pins missing or not engaged.
10. Tires.a. Any tire on any steering axle of a power unit.
(1) With less than4/32inch tread when measured at any point on a major tread groove.
(2) Has body ply or belt material exposed through the tread or sidewall.
(3) Has any tread or sidewall separation.
(4) Has a cut where the ply or belt material is exposed.
(5) Labeled “Not for Highway Use” or displaying other marking which would exclude use on steering axle.
(6) A tube-type radial tire without radial tube stem markings. These markings include a red band around the tube stem, the word “radial” embossed in metal stems, or the word “radial” molded in rubber stems.
(7) Mixing bias and radial tires on the same axle.
(8) Tire flap protrudes through valve slot in rim and touches stem.
(9) Regrooved tire except motor vehicles used solely in urban or suburban service (see exception in 393.75(e).
(10) Boot, blowout patch or other ply repair.
(11) Weight carried exceeds tire load limit. This includes overloaded tire resulting from low air pressure.
(12) Tire is flat or has noticeable (e.g., can be heard or felt) leak.
(13) Any bus equipped with recapped or retreaded tire(s).
(14) So mounted or inflated that it comes in contact with any part of the vehicle.
b. All tires other than those found on the steering axle of a power unit:
(1) Weight carried exceeds tire load limit. This includes overloaded tire resulting from low air pressure.
(2) Tire is flat or has noticeable (e.g., can be heard or felt) leak.
(3) Has body ply or belt material exposed through the tread or sidewall.
(4) Has any tread or sidewall separation.
(5) Has a cut where ply or belt material is exposed.
(6) So mounted or inflated that it comes in contact with any part of the vehicle. (This includes a tire that contacts its mate.)
(7) Is marked “Not for highway use” or otherwise marked and having like meaning.
(8) With less than2/32inch tread when measured at any point on a major tread groove.
11. Wheels and Rims.a. Lock or Side Ring. Bent, broken, cracked, improperly seated, sprung or mismatched ring(s).b. Wheels and rims. Cracked or broken or has elongated bolt holes.
c. Fasteners (both spoke and disc wheels). Any loose, missing, broken, cracked, stripped or otherwise ineffective fasteners.
d. Welds.(1) Any cracks in welds attaching disc wheel disc to rim.
(2) Any crack in welds attaching tubeless demountable rim to adapter.
(3) Any welded repair on aluminum wheel(s) on a steering axle.
(4) Any welded repair other than disc to rim attachment on steel disc wheel(s) mounted on the steering axle.
12. Windshield Glazing. (Not including a 2 inch border at the top, a 1 inch border at each side and the area below the topmost portion of the steering wheel.) Any crack, discoloration or vision reducing matter except: (1) coloring or tinting applied at time of manufacture; (2) any crack not over1/4inch wide, if not intersected by any other crack; (3) any damaged area not more than3/4inch in diameter, if not closer than 3 inches to any other such damaged area; (4) labels, stickers, decalcomania, etc. (see 393.60 for exceptions).13. Windshield Wipers. Any power unit that has an inoperative wiper, or missing or damaged parts that render it ineffective.Comparison of Appendix G, and the new North American Uniform Driver-Vehicle Inspection Procedure (North American Commercial Vehicle Critical Safety Inspection Items and Out-Of-Service Criteria)The vehicle portion of the FMCSA's North American Uniform Driver-Vehicle Inspection Procedure (NAUD-VIP) requirements, CVSA's North American Commercial Vehicle Critical Safety Inspection Items and Out-Of-Service Criteria and appendix G of subchapter B are similar documents and follow the same inspection procedures. The same items are required to be inspected by each document. FMCSA's and CVSA's out-of-service criteria are intended to be used in random roadside inspections to identify critical vehicle inspection items and provide criteria for placing a vehicle(s) out-of-service. Avehicle(s) is placed out-of-service only when by reason of its mechanical condition or loading it is determined to be so imminently hazardous as to likely cause an accident or breakdown, or when such condition(s) would likely contribute to loss of control of the vehicle(s) by the driver. A certain amount of flexibility is given to the inspecting official whether to place the vehicle out-of-service at the inspection site or if it would be less hazardous to allow the vehicle to proceed to a repair facility for repair. The distance to the repair facility must not exceed 25 miles. The roadside type of inspection, however, does not necessarily mean that a vehicle has to be defect-free in order to continue in service.In contrast, the appendix G inspection procedure requires that all items required to be inspected are in proper adjustment, are not defective and function properly prior to the vehicle being placed in service.Differences Between the Out-of-Service Criteria and FMCSA's Annual Inspection1. Brake System.The appendix G criteria rejects vehicles with any defective brakes, any air leaks, etc. The out-of-service criteria allows 20% defective brakes on non-steering axles and a certain latitude on air leaks before placing a vehicle out-of-service.2. Coupling Devices.Appendix G rejects vehicles with any fifth wheel mounting fastener missing or ineffective. The out-of-service criteria allows up to 20% missing or ineffective fasteners on frame mountings and pivot bracket mountings and 25% on slider latching fasteners. The out-of-service criteria also allows some latitude on cracked welds.3. Exhaust System.Appendix G follows Section 393.83 verbatim. The CVSA out-of-service criteria allows vehicles to exhaust forward of the dimensions given in Section 393.83 as long as the exhaust does not leak or exhaust under the chassis.4. Fuel System.Same for Appendix G and the out-of-service criteria.5. Lighting Devices.Appendix G requires all lighting devices required by Section 393 to be operative at all times. The out-of-service criteria only requires one stop light and functioning turn signals on the rear most vehicle of a combination vehicle to be operative at all times. In addition one operative head lamp and tail lamp are required during the hours of darkness.6. Safe Loading.Same for both Appendix G and the out-of-service criteria.7. Steering MechanismSteering lash requirements of appendix G follows the new requirements of §393.209.8. SuspensionAppendix G follows the new requirements of §393.207 which does not allow any broken leaves in a leaf spring assembly. The out-of-service criteria allows up to 25% broken or missing leaves before being placed out-of-service.9. FrameThe out-of-service criteria allows a certain latitude in frame cracks before placing a vehicle out-of-service. Appendix G follows the new requirements of 393.201 which does not allow any frame cracks.10. TiresAppendix G follows the requirements of 393.75 which requires a tire tread depth of4/32inch on power unit steering axles and2/32inch on all other axles. The out-of-service criteria only requires2/32inch tire tread depth on power unit steering axles and1/32inch on all other axles.11. Wheel and RimsThe out-of-service criteria allows a certain amount latitude for wheel and rim cracks and missing or defective fasteners. Appendix G meets the requirements of the new 393.205 which does not allow defective wheels and rims non-effective nuts and bolts.12. Windshield GlazingThe out-of-service criteria places in a restricted service condition any vehicle that has a crack or discoloration in the windshield area lying within the sweep of the wiper on the drivers side and does not address the remaining area of the windshield. Appendix G addresses requirements for the whole windshield as specified in 393.60.13. Windshield WipersAppendix G requires windshield wipers to be operative at all times. The out-of-service criteria only requires that the windshield wiper on the driver's side to be inspect
§ 396.19Inspector qualifications.
(a) Motor carriers and intermodal equipment providers must ensure that individuals performing annual inspections under § 396.17(d) or (e) are qualified as follows:(1) Understand the inspection criteria set forth in part 393 and appendix G of this subchapter and can identify defective components;(2) Are knowledgeable of and have mastered the methods, procedures, tools and equipment used when performing an inspection; and(3) Are capable of performing an inspection by reason of experience, training, or both as follows:(i) Successfully completed a Federal-or State-sponsored training program or have a certificate from a State or Canadian Province that qualifies the individuals to perform commercial motor vehicle safety inspections, or(ii) Have a combination of training or experience totaling at least 1 year. Such training or experience may consist of:(A) Participation in a commercial motor vehicle manufacturer-sponsored training program or similar commercial training program designed to train students in commercial motor vehicle operation and maintenance;(B) Experience as a mechanic or inspector in a motor carrier or intermodal equipment maintenance program;(C) Experience as a mechanic or inspector in commercial motor vehicle maintenance at a commercial garage, fleet leasing company, or similar facility; or(D) Experience as a commercial motor vehicle inspector for a State, Provincial or Federal government.(b) Motor carriers and intermodal equipment providers must retain evidence of that individual's qualifications under this section. They must retain this evidence for the period during which that individual is performing annual motor vehicle inspections for the motor carrier or intermodal equipment provider, and for one year thereafter. However, motor carriers and intermodal equipment providers do not have to maintain documentation of inspector qualifications for those inspections performed either as part of a State periodic inspection program or at the roadside as part of a random roadside inspection program
§ 396.25Qualifications of brake inspectors.
(a) Motor carriers and intermodal equipment providers must ensure that all inspections, maintenance, repairs or service to the brakes of its commercial motor vehicles, are performed in compliance with the requirements of this section. (b) For purposes of this section, brake inspector means any employee of a motor carrier or intermodal equipment provider who is responsible for ensuring that all brake inspections, maintenance, service, or repairs to any commercial motor vehicle, subject to the motor carrier's or intermodal equipment provider's control, meet the applicable Federal standards. (c) No motor carrier or intermodal equipment provider may require or permit any employee who does not meet the minimum brake inspector qualifications of paragraph (d) of this section to be responsible for the inspection, maintenance, service or repairs of any brakes on its commercial motor vehicles.(d) The motor carrier or intermodal equipment provider must ensure that each brake inspector is qualified as follows:(1) Understands the brake service or inspection task to be accomplished and can perform that task; and(2) Is knowledgeable of and has mastered the methods, procedures, tools and equipment used when performing an assigned brake service or inspection task; and(3) Is capable of performing the assigned brake service or inspection by reason of experience, training, or both as follows: (i) Has successfully completed an apprenticeship program sponsored by a State, a Canadian Province, a Federal agency or a labor union, or a training program approved by a State, Provincial or Federal agency, or has a certificate from a State or Canadian Province that qualifies the person to perform the assigned brake service or inspection task (including passage of Commercial Driver's License air brake tests in the case of a brake inspection); or
Code of Federal Regulations499
(ii) Has brake-related training or experience or a combination thereof totaling at least one year. Such training or experience may consist of:(A) Participation in a training program sponsored by a brake or vehicle manufacturer or similar commercial training program designed to train students in brake maintenance or inspection similar to the assigned brake service or inspection tasks; or(B) Experience performing brake maintenance or inspection similar to the assigned brake service or inspection task in a motor carrier or intermodal equipment provider maintenance program; or(C) Experience performing brake maintenance or inspection similar to the assigned brake service or inspection task at a commercial garage, fleet leasing company, or similar facility.(e) No motor carrier or intermodal equipment provider may employ any person as a brake inspector unless the evidence of the inspector's qualifications, required under this section, is maintained by the motor carrier or intermodal equipment provider at its principal place of business, or at the location at which the brake inspector is employed. The evidence must be maintained for the period during which the brake inspector is employed in that capacity and for one year thereafter. However, motor carriers and intermodal equipment providers do not have to maintain evidence of qualifications to inspect air brake systems for such inspections performed by persons who have passed the air brake knowledge and skills test for a Commercial Driver's License.
§ 396.17Periodic inspection.
(a) Every commercial motor vehicle must be inspected as required by this section. The inspection must include, at a minimum, the parts and accessories set forth in appendix G of this subchapter. The term commercial motor vehicle includes each vehicle in a combination vehicle. For example, for a tractor semitrailer, full trailer combination, the tractor, semitrailer, and the full trailer (including the converter dolly if so equipped) must each be inspected. (b) Except as provided in § 396.23 and this paragraph, motor carriers must inspect or cause to be inspected all motor vehicles subject to their control. Intermodal equipment providers must inspect or cause to be inspected intermodal equipment that is interchanged or intended for interchange to motor carriers in intermodal transportation.(c) A motor carrier must not use a commercial motor vehicle, and an intermodal equipment provider must not tender equipment to a motor carrier for interchange, unless each component identified in appendix G of this subchapter has passed an inspection in accordance with the terms of this section at least once during the preceding 12 months and documentation of such inspection is on the vehicle. The documentation may be:(1) The inspection report prepared in accordance with § 396.21(a), or(2) Other forms of documentation, based on the inspection report (e.g., sticker or decal), which contains the following information:(i) The date of inspection;(ii) Name and address of the motor carrier, intermodal equipment provider, or other entity where the inspection report is maintained;(iii) Information uniquely identifying the vehicle inspected if not clearly marked on the motor vehicle; and(iv) A certification that the vehicle has passed an inspection in accordance with § 396.17.(d) A motor carrier may perform the required annual inspection for vehicles under the carrier's control which are not subject to an inspection under §396.23(b)(1). An intermodal equipment provider may perform the required annual inspection for intermodal equipment interchanged or intended for interchange to motor carriers that are not subject to an inspection under § 396.23(b)(1).(e) In lieu of the self-inspection provided for in paragraph (d) of this section, a motor carrier or intermodal equipment provider responsible for the inspection may choose to have a commercial garage, fleet leasing company, truck stop, or other similar commercial business perform the inspection as its agent, provided that business operates and maintains facilities appropriate for commercial vehicle inspections and it employs qualified inspectors, as required by §396.19.(f) Vehicles passing roadside or periodic inspections performed under the auspices of any State government or equivalent jurisdiction or the FMCSA, meeting the minimum standards contained in appendix G of this subchapter, will be considered to have met the requirements of an annual inspection for a period of 12 months commencing from the last day of the month in which the inspection was performed. If a vehicle is subject to a mandatory State inspection program, as provided in § 396.23(b)(1), a roadside inspection may only be considered equivalent if it complies with the requirements of that program. (g) It is the responsibility of the motor carrier or intermodal equipment provider to ensure that all parts and accessories on commercial motor vehicles intended for use in interstate commerce for which they are responsible are maintained at, or promptly repaired to, the minimum standards set forth in appendix G to this subchapter.
Code of Federal Regulations497
(h) Failure to perform properly the annual inspection required by this section shall cause the motor carrier or intermodal equipment provider to be subject to the penalty provisions of 49 U.S.C. 521(b).
Appendix G to Subchapter B—
Minimum periodic inspection standards A vehicle does not pass an inspection if it has one of the following defects or deficiencies:
1. Brake System.
a. Service brakes.
(1) Absence of braking action on any axle required to have brakes upon application of the service brakes (such as missing brakes or brake shoe(s) failing to move upon application of a wedge, S-cam, cam, or disc brake).
(2) Missing or broken mechanical components including: shoes, lining, pads, springs, anchor pins, spiders, cam rollers, push-rods, and air chamber mounting bolts.
(3) Loose brake components including air chambers, spiders, and cam shaft support brackets.
(4) Audible air leak at brake chamber (Example-ruptured diaphragm, loose chamber clamp, etc.).
(5) Readjustment limits. The maximum stroke at which brakes should be readjusted is given below. Any brake1/4 and inch; or more past the readjustment limit or any two brakes less than1/4 and inch; beyond the readjustment limit shall be cause for rejection. Stroke shall be measured with engine off and reservoir pressure of 80 to 90 psi with brakes fully applied.
Bolt Type Brake Chamber Data Type Effective area (sq. in.) Outside dia. (in.) Maximum stroke at which brakes should be readjusted
A 12 6 15/16 1 3/8
B 24 9 3/16 1 3/4
C 16 8 1/16 1 3/4
D 6 5 1/4 1 1/4
E 9 6 3/16 1 3/8
F 36 11 2 1/4
G 30 9 7/8 2
Rotochamber Data Type Effective area (sq. in.) Outside dia. (in.) Maximum stroke at which brakes should be readjusted
9 9 4 9/32 1 1/2
12 12 4 13/16 1 1/2
16 16 5 13/32 2
20 20 5 15/16 2
24 24 6 13/32 2
30 30 7 1/16 2 1/4
36 36 7 5/8 2 3/4
50 50 8 7/8 3
Clamp Type Brake Chamber Data Type Effective area (sq. in.) Outside dia. (in.) Maximum stroke at which brakes should be readjusted
6 6 4 1/2 1 1/4
9 9 5 1/4 1 3/8
12 12 5 11/16 1 3/8
16 16 6 3/8 1 3/4
20 20 6 25/32 1 3/4
24 24 7 7/32 11 3/4
30 30 8 3/32 2
36 36 9 2 1/4
(2 and inch; for long stroke design).Wedge Brake Data —Movement of the scribe mark on the lining shall not exceed1/16inch.
(6) Brake linings or pads.(a) Lining or pad is not firmly attached to the shoe;(b) Saturated with oil, grease, or brake fluid; or(c) Non-steering axles: Lining with a thickness less than1/4inch at the shoe center for air drum brakes,1/16inch or less at the shoe center for hydraulic and electric drum brakes, and less than1/8inch for air disc brakes.(d) Steering axles: Lining with a thickness less than1/4inch at the shoe center for drum brakes, less than1/8inch for air disc brakes and1/16inch or less for hydraulic disc and electric brakes.
(7) Missing brake on any axle required to have brakes.
(8) Mismatch across any power unit steering axle of:(a) Air chamber sizes.
(b) Slack adjuster length.b. Parking Brake System. No brakes on the vehicle or combination are applied upon actuation of the parking brake control, including driveline hand controlled parking brakes.c. Brake Drums or Rotors.(1) With any external crack or cracks that open upon brake application (do not confuse short hairline heat check cracks with flexural cracks).(2) Any portion of the drum or rotor missing or in danger of falling away.d.
Brake Hose.
(1) Hose with any damage extending through the outer reinforcement ply. (Rubber impregnated fabric cover is not a reinforcement ply). (Thermoplastic nylon may have braid reinforcement or color difference between cover and inner tube. Exposure of second color is cause for rejection.
(2) Bulge or swelling when air pressure is applied.
(3) Any audible leaks.
(4) Two hoses improperly joined (such as a splice made by sliding the hose ends over a piece of tubing and clamping the hose to the tube)
.(5) Air hose cracked, broken or crimped.
e.
Brake Tubing.(1) Any audible leak.
(2) Tubing cracked, damaged by heat, broken or crimped.
f.
Low Pressure Warning Device missing, inoperative, or does not operate at 55 psi and below, or1/2the governor cut-out pressure, whichever is less.
g.
Tractor Protection Valve. Inoperable or missing tractor protection valve(s) on power unit
.h.
Air Compressor.
(1) Compressor drive belts in condition of impending or probable failure.
(2) Loose compressor mounting bolts.
(3) Cracked, broken or loose pulley.
(4) Cracked or broken mounting brackets, braces or adapters.i. Electric Brakes.
(1) Absence of braking action on any wheel required to have brakes.
(2) Missing or inoperable breakaway braking device.
j. Hydraulic Brakes. (Including Power Assist Over Hydraulic and Engine Drive Hydraulic Booster).
(1) Master cylinder less than1/4full.
(2) No pedal reserve with engine running except by pumping pedal.
(3) Power assist unit fails to operate.
(4) Seeping or swelling brake hose(s) under application of pressure.
(5) Missing or inoperative check valve.
(6) Has any visually observed leaking hydraulic fluid in the brake system.
(7) Has hydraulic hose(s) abraded (chafed) through outer cover-to-fabric layer.
(8) Fluid lines or connections leaking, restricted, crimped, cracked or broken.
(9) Brake failure or low fluid warning light on and/or inoperative.
k. Vacuum Systems. Any vacuum system which:
(1) Has insufficient vacuum reserve to permit one full brake application after engine is shut off.
(2) Has vacuum hose(s) or line(s) restricted, abraded (chafed) through outer cover to cord ply, crimped, cracked, broken or has collapse of vacuum hose(s) when vacuum is applied.
(3) Lacks an operative low-vacuum warning device as required.
2. Coupling devices.a. Fifth Wheels.
(1) Mounting to frame.(a) Any fasteners missing or ineffective.(b) Any movement between mounting components.(c) Any mounting angle iron cracked or broken.
(2) Mounting plates and pivot brackets.(a) Any fasteners missing or ineffective.(b) Any welds or parent metal cracked.(c) More than3/8inch horizontal movement between pivot bracket pin and bracket.(d) Pivot bracket pin missing or not secured.
(3) Sliders.(a) Any latching fasteners missing or ineffective.(b) Any fore or aft stop missing or not securely attached.(c) Movement more than3/8inch between slider bracket and slider base.(d) Any slider component cracked in parent metal or weld.
(4) Lower coupler.(a) Horizontal movement between the upper and lower fifth wheel halves exceeds1/2inch.
(b) Operating handle not in closed or locked position.
(c) Kingpin not properly engaged.
(d) Separation between upper and lower coupler allowing light to show through from side to side.
(e) Cracks in the fifth wheel plate. Exceptions: Cracks in fifth wheel approach ramps and casting shrinkage cracks in the ribs of the body of a cast fifth wheel.
(f) Locking mechanism parts missing, broken, or deformed to the extent the kingpin is not securely held.
b.
Pintle Hooks
.(1) Mounting to frame.
(a) Any missing or ineffective fasteners (a fastener is not considered missing if there is an empty hole in the device but no corresponding hole in the frame or vice versa).
(b) Mounting surface cracks extending from point of attachment (e.g., cracks in the frame at mounting bolt holes).
(c) Loose mounting.
(d) Frame cross member providing pintle hook attachment cracked.
(2) Integrity.
(a) Cracks anywhere in pintle hook assembly.
(b) Any welded repairs to the pintle hook
(c) Any part of the horn section reduced by more than 20%.(d) Latch insecure.
c. Drawbar/Towbar Eye.
(1) Mounting.(a) Any cracks in attachment welds.(b) Any missing or ineffective fasteners.
(2) Integrity.(a) Any cracks.(b) Any part of the eye reduced by more than 20%.d. Drawbar/Towbar Tongue.
(1) Slider (power or manual).
(a) Ineffective latching mechanism
(b) Missing or ineffective stop.
(c) Movement of more than1/4inch between slider and housing.
(d) Any leaking, air or hydraulic cylinders, hoses, or chambers (other than slight oil weeping normal with hydraulic seals).
(2) Integrity.
(a) Any cracks.
(b) Movement of1/4inch between subframe and drawbar at point of attachment.
e. Safety Devices.(1) Safety devices missing.(2) Unattached or incapable of secure attachment.
(3) Chains and hooks.
(a) Worn to the extent of a measurable reduction in link cross section.
(b) Improper repairs including welding, wire, small bolts, rope and tape.
(4) Cable.(a) Kinked or broken cable strands.(b) Improper clamps or clamping.f. Saddle-Mounts.
(1) Method of attachment.
(a) Any missing or ineffective fasteners.
(b) Loose mountings.
(c) Any cracks or breaks in a stress or load bearing member.
(d) Horizontal movement between upper and lower saddle-mount halves exceeds1/4inch.
3. Exhaust System.
a. Any exhaust system determined to be leaking at a point forward of or directly below the driver/sleeper compartment.
b. A bus exhaust system leaking or discharging to the atmosphere:
(1) Gasoline powered—excess of 6 inches forward of the rearmost part of the bus.
(2) Other than gasoline powered—in excess of 15 inches forward of the rearmost part of the bus
(3) Other than gasoline powered—forward of a door or window designed to be opened. (exception: Emergency exits).
c. No part of the exhaust system of any motor vehicle shall be so located as would be likely to result in burning, charring, or damaging the electrical wiring, the fuel supply, or any combustible part of the motor vehicle.
4. Fuel System.a. A fuel system with a visable leak at any point.
b. A fuel tank filler cap missing.
c. A fuel tank not securely attached to the motor vehicle by reason of loose, broken or missing mounting bolts or brackets (some fuel tanks use springs or rubber bushings to permit movement).
5. Lighting Devices. All lighting devices and reflectors required by Section 393 shall be operable.6.
Safe Loading.
a. Part(s) of vehicle or condition of loading such that the spare tire or any part of the load or dunnage can fall onto the roadway.
b. Protection Against Shifting Cargo—Any vehicle without a front-end structure or equivalent device as required.
c. Container securement devices on intermodal equipment—All devices used to secure an intermodal container to a chassis, including rails or support frames, tiedown bolsters, locking pins, clevises, clamps, and hooks that are cracked, broken, loose, or missing.
7. Steering Mechanism.a. Steering Wheel Free Play (on vehicles equipped with power steering the engine must be running).
Steering wheel diameter Manual steering system Power steering system
16 inch; 2 inch; 4 1/2inch;
18inch; 2 1/4inch; 4 3/4inch;
20inch; 2 1/2inch; 5 1/4inch;
22inch; 2 3/4inch; 5 3/4inch;
b. Steering Column.
(1) Any absence or looseness of U-bolt(s) or positioning part(s).
(2) Worn, faulty or obviously repair welded universal joint(s).
(3) Steering wheel not properly secured.
c. Front Axle Beam and All Steering Components Other Than Steering Column.
(1) Any crack(s).
(2) Any obvious welded repair(s).
d. Steering Gear Box.
(1) Any mounting bolt(s) loose or missing.
(2) Any crack(s) in gear box or mounting brackets.
e. Pitman Arm. Any looseness of the pitman arm on the steering gear output shaft.
f. Power Steering. Auxiliary power assist cylinder loose.g. Ball and Socket Joints.
(1) Any movement under steering load of a stud nut.
(2) Any motion, other than rotational, between any linkage member and its attachment point of more than1/4inch.h. Tie Rods and Drag Links.
(1) Loose clamp(s) or clamp bolt(s) on tie rods or drag links.
(2) Any looseness in any threaded joint.
i. Nuts. Nut(s) loose or missing on tie rods, pitman arm, drag link, steering arm or tie rod arm.
j. Steering System. Any modification or other condition that interferes with free movement of any steering component.
8. Suspension.a. Any U-bolt(s), spring hanger(s), or other axle positioning part(s) cracked, broken, loose or missing resulting in shifting of an axle from its normal position. (After a turn, lateral axle displacement is normal with some suspensions. Forward or rearward operation in a straight line will cause the axle to return to alignment).
b. Spring Assembly.
(1) Any leaves in a leaf spring assembly broken or missing.
(2) Any broken main leaf in a leaf spring assembly. (Includes assembly with more than one main spring).
(3) Coil spring broken.
(4) Rubber spring missing.
(5) One or more leaves displaced in a manner that could result in contact with a tire, rim, brake drum or frame.
(6) Broken torsion bar spring in a torsion bar suspension.
(7) Deflated air suspension, i.e., system failure, leak, etc.c. Torque, Radius or Tracking Components. Any part of a torque, radius or tracking component assembly or any part used for attaching the same to the vehicle frame or axle that is cracked, loose, broken or missing. (Does not apply to loose bushings in torque or track rods.)
9. Frame.a. Frame Members.
(1) Any cracked, broken, loose, or sagging frame member.
(2) Any loose or missing fasteners including fasteners attaching functional component such as engine, transmission, steering gear, suspension, body parts, and fifth wheel.
b. Tire and Wheel Clearance. Any condition, including loading, that causes the body or frame to be in contact with a tire or any part of the wheel assemblies.
c. (1) Adjustable Axle Assemblies (Sliding Subframes). Adjustable axle assembly with locking pins missing or not engaged.
10. Tires.a. Any tire on any steering axle of a power unit.
(1) With less than4/32inch tread when measured at any point on a major tread groove.
(2) Has body ply or belt material exposed through the tread or sidewall.
(3) Has any tread or sidewall separation.
(4) Has a cut where the ply or belt material is exposed.
(5) Labeled “Not for Highway Use” or displaying other marking which would exclude use on steering axle.
(6) A tube-type radial tire without radial tube stem markings. These markings include a red band around the tube stem, the word “radial” embossed in metal stems, or the word “radial” molded in rubber stems.
(7) Mixing bias and radial tires on the same axle.
(8) Tire flap protrudes through valve slot in rim and touches stem.
(9) Regrooved tire except motor vehicles used solely in urban or suburban service (see exception in 393.75(e).
(10) Boot, blowout patch or other ply repair.
(11) Weight carried exceeds tire load limit. This includes overloaded tire resulting from low air pressure.
(12) Tire is flat or has noticeable (e.g., can be heard or felt) leak.
(13) Any bus equipped with recapped or retreaded tire(s).
(14) So mounted or inflated that it comes in contact with any part of the vehicle.
b. All tires other than those found on the steering axle of a power unit:
(1) Weight carried exceeds tire load limit. This includes overloaded tire resulting from low air pressure.
(2) Tire is flat or has noticeable (e.g., can be heard or felt) leak.
(3) Has body ply or belt material exposed through the tread or sidewall.
(4) Has any tread or sidewall separation.
(5) Has a cut where ply or belt material is exposed.
(6) So mounted or inflated that it comes in contact with any part of the vehicle. (This includes a tire that contacts its mate.)
(7) Is marked “Not for highway use” or otherwise marked and having like meaning.
(8) With less than2/32inch tread when measured at any point on a major tread groove.
11. Wheels and Rims.a. Lock or Side Ring. Bent, broken, cracked, improperly seated, sprung or mismatched ring(s).b. Wheels and rims. Cracked or broken or has elongated bolt holes.
c. Fasteners (both spoke and disc wheels). Any loose, missing, broken, cracked, stripped or otherwise ineffective fasteners.
d. Welds.(1) Any cracks in welds attaching disc wheel disc to rim.
(2) Any crack in welds attaching tubeless demountable rim to adapter.
(3) Any welded repair on aluminum wheel(s) on a steering axle.
(4) Any welded repair other than disc to rim attachment on steel disc wheel(s) mounted on the steering axle.
12. Windshield Glazing. (Not including a 2 inch border at the top, a 1 inch border at each side and the area below the topmost portion of the steering wheel.) Any crack, discoloration or vision reducing matter except: (1) coloring or tinting applied at time of manufacture; (2) any crack not over1/4inch wide, if not intersected by any other crack; (3) any damaged area not more than3/4inch in diameter, if not closer than 3 inches to any other such damaged area; (4) labels, stickers, decalcomania, etc. (see 393.60 for exceptions).13. Windshield Wipers. Any power unit that has an inoperative wiper, or missing or damaged parts that render it ineffective.Comparison of Appendix G, and the new North American Uniform Driver-Vehicle Inspection Procedure (North American Commercial Vehicle Critical Safety Inspection Items and Out-Of-Service Criteria)The vehicle portion of the FMCSA's North American Uniform Driver-Vehicle Inspection Procedure (NAUD-VIP) requirements, CVSA's North American Commercial Vehicle Critical Safety Inspection Items and Out-Of-Service Criteria and appendix G of subchapter B are similar documents and follow the same inspection procedures. The same items are required to be inspected by each document. FMCSA's and CVSA's out-of-service criteria are intended to be used in random roadside inspections to identify critical vehicle inspection items and provide criteria for placing a vehicle(s) out-of-service. Avehicle(s) is placed out-of-service only when by reason of its mechanical condition or loading it is determined to be so imminently hazardous as to likely cause an accident or breakdown, or when such condition(s) would likely contribute to loss of control of the vehicle(s) by the driver. A certain amount of flexibility is given to the inspecting official whether to place the vehicle out-of-service at the inspection site or if it would be less hazardous to allow the vehicle to proceed to a repair facility for repair. The distance to the repair facility must not exceed 25 miles. The roadside type of inspection, however, does not necessarily mean that a vehicle has to be defect-free in order to continue in service.In contrast, the appendix G inspection procedure requires that all items required to be inspected are in proper adjustment, are not defective and function properly prior to the vehicle being placed in service.Differences Between the Out-of-Service Criteria and FMCSA's Annual Inspection1. Brake System.The appendix G criteria rejects vehicles with any defective brakes, any air leaks, etc. The out-of-service criteria allows 20% defective brakes on non-steering axles and a certain latitude on air leaks before placing a vehicle out-of-service.2. Coupling Devices.Appendix G rejects vehicles with any fifth wheel mounting fastener missing or ineffective. The out-of-service criteria allows up to 20% missing or ineffective fasteners on frame mountings and pivot bracket mountings and 25% on slider latching fasteners. The out-of-service criteria also allows some latitude on cracked welds.3. Exhaust System.Appendix G follows Section 393.83 verbatim. The CVSA out-of-service criteria allows vehicles to exhaust forward of the dimensions given in Section 393.83 as long as the exhaust does not leak or exhaust under the chassis.4. Fuel System.Same for Appendix G and the out-of-service criteria.5. Lighting Devices.Appendix G requires all lighting devices required by Section 393 to be operative at all times. The out-of-service criteria only requires one stop light and functioning turn signals on the rear most vehicle of a combination vehicle to be operative at all times. In addition one operative head lamp and tail lamp are required during the hours of darkness.6. Safe Loading.Same for both Appendix G and the out-of-service criteria.7. Steering MechanismSteering lash requirements of appendix G follows the new requirements of §393.209.8. SuspensionAppendix G follows the new requirements of §393.207 which does not allow any broken leaves in a leaf spring assembly. The out-of-service criteria allows up to 25% broken or missing leaves before being placed out-of-service.9. FrameThe out-of-service criteria allows a certain latitude in frame cracks before placing a vehicle out-of-service. Appendix G follows the new requirements of 393.201 which does not allow any frame cracks.10. TiresAppendix G follows the requirements of 393.75 which requires a tire tread depth of4/32inch on power unit steering axles and2/32inch on all other axles. The out-of-service criteria only requires2/32inch tire tread depth on power unit steering axles and1/32inch on all other axles.11. Wheel and RimsThe out-of-service criteria allows a certain amount latitude for wheel and rim cracks and missing or defective fasteners. Appendix G meets the requirements of the new 393.205 which does not allow defective wheels and rims non-effective nuts and bolts.12. Windshield GlazingThe out-of-service criteria places in a restricted service condition any vehicle that has a crack or discoloration in the windshield area lying within the sweep of the wiper on the drivers side and does not address the remaining area of the windshield. Appendix G addresses requirements for the whole windshield as specified in 393.60.13. Windshield WipersAppendix G requires windshield wipers to be operative at all times. The out-of-service criteria only requires that the windshield wiper on the driver's side to be inspect
Wednesday, October 17, 2012
Find Diesel Engine Troubleshooting and Repair information
Book Description
Publication Date: October 15, 2007 | ISBN-10: 0071493719 | ISBN-13: 978-0071493710 | Edition: 4
Harness the Latest Tools and Techniques for Troubleshooting and Repairing Virtually Any Diesel Engine Problem
The Fourth Edition of Troubleshooting and Repairing Diesel Engines presents the latest advances in diesel technology. Comprehensive and practical, this revised classic equips you with all of the state-of-the-art tools and techniques needed to keep diesel engines running in top condition.
Written by master mec
DEF Fluid for School Buses and DEF for Diesel Engines
Diesel Exhaust Fluid, or DEF used in your 2010 or newer engine is key to the engine CEL and aftertreatment issues. Pick a quality product like the one listed below to fill your tank.
Always keep your tank full, I suggest filling it every week to prevent any issue.
Coolant for your Cummins Diesel Engine
PenRay Test Strips can be found here: http://amzn.to/RV4Xo2 Coolant an issue on your bus or truck? EGR Coolers, Engine Cyl. Walls and much more is at risk due to poor maintenance.
Use Penray test sstrips and other products to keep everything in balance.
Use Penray test sstrips and other products to keep everything in balance.
Monday, October 15, 2012
Saturday, October 13, 2012
JUSTANSWER Website - Auto and Life answers from experts
Just Answer Website to help with your car, truck, bus, boat, just about any question you may have.
Tuesday, October 9, 2012
Cummins 8.3l DPF Crankcase pressure
Cummins CNG
Cummins Westport Inc. has begun development on the ISB6.7 G, a mid-range 6.7 liter natural gas engine designed to meet the increasing demand for on-highway vehicles powered by natural gas. As a leading supplier of natural gas engines, Cummins Westport says it will continue to expand its product range to supply the growing demand for natural gas engines.
The ISB6.7 G engine will be based on the Cummins ISB6.7 diesel engine and will use Cummins Westport's spark-ignited, stoichiometric cooled exhaust gas recirculation (SEGR) technology, the company says. Exhaust aftertreatment will be provided by a maintenance-free three-way catalyst. Cummins Westport says the engine will run on compressed natural gas (CNG), however, the natural gas may be stored on the vehicle in liquefied natural gas (LNG) state or as CNG. The ISB6.7 G is expected to be in production by 2015 and will be designed to meet Environmental Protection Agency (EPA) and California Air Resources Board (CARB) regulations in force at the time of launch, Cummins says.
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