Fifth Wheel Uncoupling - freightliner PX113064S T 2016 Manual

04/28/2017

Fifth Wheel Uncoupling

Manual Uncoupling
1.
Slowly back the tractor tightly against the trailer
to relieve pressure on the fifth wheel lock.
2. Apply the tractor and trailer parking brakes.
3. Chock the trailer rear wheels.
4. Lower the trailer landing gear until the weight is
removed from the fifth wheel.
5. Disconnect the tractor-to-trailer air system lines
and electrical cable. Plug the air lines to prevent
dirt or foreign material from entering the lines.
6. Verify that both the yellow parking-brake and red
trailer-air-supply knobs are out, the tractor and
trailer parking brakes are set, and that the trailer
is prepared for uncoupling.
7. Release the kingpin locking mechanism following
the instructions for each manufacturer below.
7.1
Fontaine: Lift the safety latch and pull the
lock control handle to the unlocked
position as shown in
7.2 Holland FW35: Pull out the release
handle as shown in
7.3 Holland FWAL: Slide the handle forward
to move the front notch on the locking
plate clear of the bracket.
Pull the handle completely out.
OK
Fig. 14.19, Jost Release Handle Locked
Fig. 14.3.
Fig. 14.8.
Slide the handle forward again to hook the
rear notch on the locking plate onto the
bracket as shown in
7.4 Jost: Depending on the fifth wheel either:
Lift the release handle up into the wide
slot and then pull the release handle out
while moving it forward as shown in
Fig. 14.17. Then lock the handle into the
open position on the notch provided.
Or, in the event of a failure in the air
release system, pull the handle directly
out and hook it open on the notch as
shown in Fig. 14.20.
B
11/01/2021
A. Pull the retractable handle out.
B. Hook the handle open using the notch.
Fig. 14.20, Jost Release Handle Unlocked
Fifth Wheels
OK
f311127
Fig. 14.9.
A
f311397
14.8