Air-Actuated Uncoupling

4700 d 18.03.001

An air-actuated kingpin release valve is optional with all fifth wheels. See Fig..

Note:  In the event of an air system failure, air-actuated kingpins can be manually released following the instructions for manual unlocking.

Warning: Once the kingpin release valve has been pulled the kingpin lock is released. The vehicle MUST NOT be driven with the trailer until the trailer has been uncoupled and coupled again. Failure to do so may result in separation of the trailer from the tractor, possibly causing serious personal injury or death.

Fig. 1, Air-Actuated Kingpin Release Valve

Note:
Parent topic: Fifth Wheel Uncoupling
Document Number: 0000118677
Manual Publication Date: 2024-05-13
Topic Publication Date: 2024-06-10