Troubleshooting difficult to couple to trailer: 3, Difficult to uncouple from trailer – SAF-HOLLAND XL-FW10049OM AL Aluminum NoLube Series Fifth Wheels User Manual
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XL-FW10049OM-en-US Rev A 11-10 Amendments and Errors Reserved. © SAF-HOLLAND, Inc.
Troubleshooting
Difficult to Couple to Trailer:
3
POSSIBLE CAUSE
REMEDY
Attempting to couple too fast.
Couple in accordance with the procedure in this
Owner’s Manual.
The trailer may be too high; the kingpin
is not entering the lock properly.
Lower the trailer in accordance with
manufacturer’s instructions.
Lock is closed.
Manually pull the release handle out as far as
possible. Lock will swing open. If air release
equipped, set tractor brakes and actuate fifth
wheel control valve to open lock.
Accumulated rust or grime interfering
with the lock operation.
Thoroughly clean the fifth wheel and relubricate in
accordance with the procedure in this Owner’s
Manual.
The lock is adjusted too tightly.
Check lock adjustments in accordance with the
procedure in this Owner’s Manual.
The lock may be damaged.
The fifth wheel M
MUST be rebuilt using the
appropriate SAF-HOLLAND service kit.
Damaged, bent release handle.
Replace release handle using the appropriate
SAF-HOLLAND service kit.
Bent kingpin, damaged upper coupler,
or improper use of “lube plate” may be
interfering with lock movement.
Check the kingpin and upper coupler as detailed
in Holland Service Bulletin XL-SB020. Repair/
replace as required. Remove any improperly
installed or improperly specified lube plates.
Refer to Holland Service Bulletin XL-SB004-01 for
lube plate warnings.
3
POSSIBLE CAUSE
REMEDY
The tractor may be putting pressure
against the locks.
Lock the trailer brakes and back the tractor
tightly against the kingpin to relieve the pres-
sure on the fifth wheel lock, set the brakes,
then pull the
release handle.
Tractor too low.
Raise tractor suspension to proper ride height.
The release handle is not pulled out com-
pletely and hooked on the forging.
Slide the release handle forward, then pull out
the handle, slide it forward, and hook.
Accumulated rust or grime interfering with
the lock operation.
Thoroughly clean the fifth wheel and relubricate
in accordance with the procedure in this
Owner’s Manual.
Difficult to Uncouple from Trailer: