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2 XL-FW232-02
TROUBLESHOOTING HINTS
Fifth Wheel is Hard to Hook Up to Trailer:
✔ POSSIBLE CAUSE REMEDY
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The trailer may be too high; the kingpin Lower the trailer landing gear.
is not entering the locks properly.
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Locks are closed. Pull the secondary and primary release handles to the unlocked position and force the
hinged lock open.
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The locks are adjusted too tightly. Check lock adjustments in accordance with the procedure in this manual.
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Accumulated rust or grime Spray a light lubricant or diesel fuel on all moving parts, including the release
interfering with the lock operation. handle, and operate several times.
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Bent release handle or kingpin or Check and repair/replace as required. The kingpin can be inspected in accordance
damaged bolster plate may be with SAE J2228.
interfering with lock movement.
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The locks may be damaged. Inspect and replace, if required, following the procedures in this manual.
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The fifth wheel may need rebuilding. Follow the procedures contained in this manual using the appropriate rebuilding kit.
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Using lube plate with wrong kingpin See Holland Service Bulletin XL-SB004.
length.
Fifth Wheel is Hard to Unhook from Trailer:
✔ POSSIBLE CAUSE REMEDY
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The secondary lock is not released. Pull the secondary lock release handle and lift up to engage the handle lug with the
top plate casting.
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The tractor may be putting pressure Back the tractor into the trailer to relieve the pressure and lock the tractor brakes
against locks. before pulling the release handle.
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Rust or grime on the locking Spray a light lubricant or diesel fuel on all moving parts, including the release handle,
mechanism. and operate several times.
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Bent kingpin or damaged bolster Check the kingpin with a Holland TF-0110 Kingpin Gage and bolster plate with a 48”
plate. straightedge. Repair/replace as required. The kingpin can be inspected in accordance
with SAE J2228.
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Fifth wheel locks may be adjusted Check the lock adjustment in accordance with procedures in this manual.
too tightly.
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The release handle will not stay out. Pull the release handle out and up, then release.
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The release handle will not stay out; Replace release handle.
pops off lug.
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The release handle must be held out. Build up release handle lug to hold out further or replace XA-1005-FH, XA-1117-H or
XA-03715 release handles.
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Long plunger. Pull the release handle to the fully extended position and hold it while someone else
attempts to uncouple. If the locks do not open under this condition, close the swinging lock
partially and grind 1/16” of the tip of the swinging lock. Round off after grinding.
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Using lube plate with wrong See Holland Service Bulletin XL-SB004.
kingpin length.
NOTE: After the fifth wheel is unlocked and moves freely from the kingpin, it is normal for the release handle to return to the “in” position.