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11.22.04.00.htm 11.22.04.00. Title 11 DEPARTMENT OF TRANSPORTATION Subtitle 22 MOTOR VEHICLE ADMINISTRATION ― PREVENTIVE MAINTENANCE PROGRAM Chapter 04 Preventive Maintenance Standards for Freight Trailers and Freight Semitrailers Authority: Transportation Article, §12-104(b) and 23-303, Annotated Code of Maryland
11.22.04.01.htm 11.22.04.01. 01 Applicability.. The standards, requirements, and procedures set forth in this chapter are applicable to equipment originally installed by the manufacturer or required by federal or State law or regulation on any vehicle registered as a Class G (freight trailer) vehicle under the provisions of Transportation Article, Title 13, Annotated Code of Maryland, or any freight trailer or semitrailer owned by this State or any political subdivision of this State. Complian
11.22.04.02.htm 11.22.04.02. 02 Alignment.. Axles, beams, spindles or mountings which are broken, damaged, worn, rusted, bent, or modified may affect wheel alignment, tracking, or vehicle handling or stability.Procedures:. Reject Vehicle If:. 1) Inspect axles, beams, spindles, and mountings for broken, damaged, worn, rusted, bent, or modified conditions.1) Any axle, beam, spindle, or mounting is broken, worn, damaged, rusted, bent, or modified and affects vehicle handling, stability, tracking, or alignment.
11.22.04.03.htm 11.22.04.03. 03 Suspension.. A. Spring and Attachments. Unequal vehicle height, broken or damaged spring leaves, spring shackles, bushings, center bolts, U-bolts, control arms, torsion bars or equalizers can affect vehicle steering, alignment, tracking, handling, and stability. With vehicle on a level surface, inspect:Procedures:. Reject Vehicle If:. 1) Vehicle height.. 1) Uneven vehicle height permits tire or wheel contact with body or suspension parts.. 2) Springs..
11.22.04.04.htm 11.22.04.04. 04 Brake Systems ― Hydraulic and Vacuum.. A. Brake Lines and Hoses. Visually inspect:. Procedures:. Reject Vehicle If:. 1) Lines and hoses.. 1) Any line is cracked, chafed, flattened, insecurely mounted, restricted, any repairs other than steel tubing (tubing connections shall be double flared) leaking, or welded.2) Master cylinder.. 2) Master cylinder leaks, is loose, or fluid level is below 1/2 inch of top.. 3) Cap..
11.22.04.05.htm 11.22.04.05. 05 Brake System ― Air.. A. Air Leakage. Inspection for leakage shall be conducted with a fully charged system and brakes fully applied.Procedures:. Reject Vehicle If:. 1) Single Vehicle. With a fully charged system, stop engine and observe pressure drop in 1 minute.. 1) Air pressure drop is greater than 3 psi in 1 minute.. B. Air Reservoir and Valves.. 1) Air Reservoir. With system fully charged, open primary (wet) tank drain valve and observe operation of check valve. Then o
11.22.04.06.htm 11.22.04.06. 06 Tires.. Tire Inspection ― Nonsteering Axle.. Procedures:. Reject Vehicle If:. 1) Inspect for Tire Wear. (a) Tires without tread indicators. (b) Tires with tread wear indicators.. 1) (a) Tire is worn so that less than 2/32 inch remains when measured in any two major grooves at three equally spaced intervals around circumference of a tire. (b) Tread wear indicator contacts the road in any two adjacent major grooves at three equally spaced intervals around circumference of a tire.
11.22.04.07.htm 11.22.04.07. 07 Wheels, Rims, Lock Rings, Studs, and Nuts.. A. Wheels. Visually inspect:. Procedures:. Reject Vehicle If:. 1) Disc Wheels. (a) Inspect for condition of wheels. (b) Inspect stud holes.. 1) (a) Wheel is broken, cracked, bent, warped, welded, or loose. (b) Any stud hole is elongated.. 2) Cast Wheels. (a) Inspect for condition of wheels. (b) Inspect stud holes.. 2) (a) Wheel is broken, cracked, bent, scraped, welded, loose, or clamping area is worn. (b) Any stud hole is elongated.
11.22.04.08.htm 11.22.04.08. 08 Vehicle Frame, Body, and Sheet Metal.. A. Frame.. Procedures:. Reject Vehicle If:. 1) Visually inspect frame for damage, deterioration, and improper welding.. 1) Frame is cracked, broken, bent, rusted to substantially weaken the frame, or frame is welded and not fishplated.2) On pole trucks inspect: (a) Cradle and cradle posts. (b) Nonwelded cradles. (i) Angle between cradles and cradle posts. (ii) Stake extension attachment. (iii) Gusset plate between stake and cradle.
11.22.04.09.htm 11.22.04.09. 09 Lighting.. A. Tail Lamps. Inspect tail lamps for:. Procedures:. Reject Vehicle If:. 1) Presence.. 1) Not equipped with at least one tail lamp on each side to the rear, or are not mounted as far apart as practical.2) Condition.. 2) Tail lamp does not function, does not emit a red light, or is not visible to rear.. B. Stop Lamps. Inspect stop lamps for:. 2) Stop lamp does not function, does not emit a red or amber light, or is not visible to the rear..
11.22.04.10.htm 11.22.04.10. 10 Electrical System.. Wiring. Visually inspect wiring for:. Procedures:. Reject Vehicle If:. 1) Condition.. 1) Insulation is broken, cracked, chafed, or connections are corroded.. 2) Mounting.. 2) Wiring is loose to permit contact with exhaust system or moving parts..
11.22.04.11.htm 11.22.04.11. 11 Hitches and Coupling Devices.. A. Upper Fifth Wheel Plate.. Procedures:. Reject Vehicle If:. 1) Inspect fifth wheel plate condition for contamination and lubrication.. 1) Broken, cracked, loose, or has 1/8 inch or more wear, or coupling areas are contaminated with gravel, sand or dirt, or are not properly lubricated.B. Kingpin.. 1) Inspect kingpin condition.. 1) Kingpin is broken, cracked, loose, or deformed.. 2) Inspect kingpin wear.. 2) Kingpin is worn 1/8 inch or more..
11.22.04.12.htm 11.22.04.12. 12 Tanks and Pressure Vessels.. A. Tanks. Inspect:. Procedures:. Reject Vehicle If:. 1) Tank.. 1) Tank leaks, is cracked, or has broken welds.. 2) Valves.. 2) Any valve leaks, is loose, cap is missing, or emergency shutoff valve is inoperable.. 3) Hose or auxiliary attachment.. 3) Any hose or auxiliary attachment is loose or improperly mounted.. 4) Hatches.. 4) Any hatch is missing, loose, not securely attached, or latch is inoperable.. 5) Hatch hinges..
11.22.04.9999.htm 11.22.04. Administrative History Effective date: January 8, 1990 (16:26 Md. R. 2796).
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