Module 3: Coupling and Uncoupling
Coupling Procedure
1. Prior to coupling, inspect the fifth wheel to ensure a proper operation.
- Examine the mounting assembly for securely fastened bolts.
- Tilt the fifth wheel up and down to make sure that it moves freely. Rest the fifth wheel in the proper position by tilting it to the rear of the tractor and resting it on the stops.
- Check the surface for a liberal coating of grease. The indented pockets on top of the fifth wheel act as a grease reservoir for the top surface and should be filled with grease.
- If the tractor is equipped with an air sliding fifth wheel, actuate the air cylinder and check for air leaks. WARNING: Air cylinder DISASSEMBLY should not BE ATTEMPTED.
- The fifth wheel should be in an unlocked position. When unlocked, the handle should be extended and the fifth wheel throat unobstructed. DO NOT TRY TO COUPLE TO A CLOSED FIFTH WHEEL.
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