Air-Actuated Uncoupling

SD DM 17.02.02

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

Fig. 1, Air-Actuated Kingpin Release Valve

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.

Note:
Parent topic: Fifth Wheel Uncoupling
Document Number: 0000123491
Manual Publication Date: 2025-01-23
Topic Publication Date: 2025-01-23