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FW8 (XA-201) FIFTH WHEEL
Trouble-Shooting Guide
Cause
1. The primary release handle is not
pulled out completely and hooked
on the notch in the casting.
2. The tractor may be puttng
pressure against locks (pulling
locks tight against kingpin).
3. Rust or grime build-up on locking
mechanism.
4. Bent kingpin, damaged upper
coupler plate or improper use of
“lube plate.”
5. Fifth wheel locks adjusted too
tight.
6. Release handle will not stay out
and must be held out to allow
uncoupling.
PROBLEM: Difficult to uncouple from trailer
Remedy
1. Slide the primary release handle
forward, then pull the handle out, slide
it forward and hook it on the notch of
the top plate casting, see Figure 1.
2. Lock the trailer brakes, then back the
tractor tight against the kingpin to
relieve pressure on the locks. Lock the
tractor brakes. Pull release handle.
3. Thoroughly steam clean the operating
mechanism of the fifth wheel, then spray
a light lubricant or apply a lightweight
grease on all moving parts including the
release handle and release handle spring.
Operate several times to work in the
lubricant. Follow recommended
lubrication schedule as detailed in Service
Bulletin #XL-SB31.
4. Check the kingpin and upper plate
coupler as detailed in Holland Service
Bulletin XL-SB20. Remove any improperly
installed or improperly specified lube
plates. Refer to Holland Service Bulletin
XL-SB4 and XL-SB4a for lube plate
warnings.
5. Re-adjust fifth wheel locks following
the maintenance instructions included
with your FW8 fifth wheel (Holland
publication XL-FW-354).
6. Fifth wheel MUST be rebuilt. Obtain the
proper rebuild kit for your model top plate.
UNLOCK
NOTCH
LOCK NOTCH
1st
2nd
3rd
Figure 1