SAF-HOLLAND FW35 Manual Del Propietário página 21

18. Troubleshooting
Difficult to Couple to Trailer:
POSSIBLE CAUSE
Attempting to couple too fast.
The trailer may be too high; the kingpin
is not entering the locks properly.
Locks are closed.
Accumulated rust or grime interfering with
the lock operation.
The locks are adjusted too tightly.
The locks may be damaged.
Damaged, bent release handle.
Damaged, bent yoke shaft from
improper coupling.
Bent kingpin, damaged upper coupler,
or improper use of "lube plate" may be
interfering with lock movement.
Difficult to Uncouple from Trailer:
POSSIBLE CAUSE
The tractor may be putting pressure
against locks.
Tractor too low.
The secondary lock is not released.
Accumulated rust or grime interfering with
the lock operation.
The locks are adjusted too tightly.
XL-FW10009UM-en-US Rev B · 2012-06-05 · Amendments and errors reserved. © SAF-HOLLAND, Inc.
REMEDY
Couple in accordance with the procedure in Section 7.
Lower the trailer in accordance with manufacturer's
instructions.
If equipped with manual secondary lock, pull secondary
release handle and hook on casting. Pull release handle
all the way out. If air release equipped, set tractor brakes
and actuate fifth wheel control valve to open locks.
Locks may be open even if they still appear closed. Check
to make sure nut and washer at front of fifth wheel are not
snug against fifth wheel and that release handle is in extended
"open" position. If both of these conditions exist, you will still
be able to couple fifth wheel. Movement of kingpin into fifth
wheel jaws will allow them to open and successfully couple.
Thoroughly clean the fifth wheel and re-lubricate in
accordance with the procedure in Section 12.
Check lock adjustments in accordance with the procedure
in Section 14.
The fifth wheel MUST be rebuilt using the appropriate
service kit.
Replace release handle using the appropriate service kit.
The fifth wheel MUST be rebuilt using the appropriate
service kit.
Check the kingpin and upper coupler plate 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.
REMEDY
Lock the trailer brakes and back the tractor tightly
against the kingpin to relieve the pressure on the fifth
wheel lock, set the brakes, then pull the release handle.
Raise tractor suspension to proper ride height.
If manual secondary: pull release handle out and up
and lock open by hooking the handle on the top plate
casting. If automatic secondary: inspect for missing or
broken parts and repair or replace as required using the
appropriate service kit.
Thoroughly clean the fifth wheel and re-lubricate in
accordance with the procedure in Section 12.
Check lock adjustments in accordance with the procedure
in Section 14.
Troubleshooting
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