Md. Code Regs. 11.22.02.27
Current through Register Vol. 51, No. 26, December 27, 2024
Section 11.22.02.27 - Hitches and Coupling DevicesA. Fifth Wheel Coupling. Inspect for: | Procedures: | Reject Vehicle If: |
| (1) Mounting. | (1) Fifth wheel is not securely attached to the vehicle frame. |
| (2) Stops. | (2) Stop is missing or broken. |
| (3) Slider. | (3) Slider is cracked, broken, does not lock, or has more than 1/4 inch movement. |
| (4) Air release. | (4) Air release does not freely lock and release. |
| (5) Jaw and latch. | (5) Jaw or latch is broken, cracked, or has more than 1/4 inch movement. |
| (6) Supporting surface. | (6) Supporting surface is broken, cracked, or does not have lubrication grooves. |
| (7) Contamination and lubrication. | (7) Coupling areas are contaminated with gravel, sand, or dirt, or coupling areas are not properly lubricated. |
| (8) Air slide. | (8) Latch fails to hold when air is depleted or chambers, lines, or connections leak air pressure. |
| (9) Saddle bushings. Place a bar between vehicle frame and the fifth wheel and pry. | (9) Movement in steel bushings exceeds 3/8 inch or, in rubber bushings, the movement could result in the fifth wheel separating from the vehicle frame. |
B. No-Slack Hitch. Apply air pressure to no-slack hitch before inspecting. | Procedures: | Reject Vehicle If: |
| (1) Inspect cushion for movement and adjustment. | (1) Cushion does not move or is out of adjustment. |
| (2) Inspect for air leaks. | (2) There is an air leak at the chamber, a line, or connection. |
C. Trailer Hitches. Inspect hitch for: | Procedures: | Reject Vehicle If: |
| (1) Mounting. | (1) Hitch is not securely attached. |
| (2) Condition. | (2) Any part is missing, bent, seized, or worn to a point where the hitch or components may separate. |
| (3) Latch. | (3) Latch fails to close and latch. |
| (4) Repairs. | (4) A cast or forged hitch has been welded. |
Md. Code Regs. 11.22.02.27