SAF-HOLLAND XL-FW10009UM FW35 Series Fifth Wheel - Manual (Page 21)

XL-FW10009UM-en-US Rev B · 2012-06-05 · Amendments and errors reserved. © SAF-HOLLAND, Inc. 21
English
Troubleshooting
9 POSSIBLE CAUSE REMEDY
Attempting to couple too fast. Couple in accordance with the procedure in Section 7.
The trailer may be too high; the kingpin
is not entering the locks properly. Lower the trailer in accordance with manufacturer's
instructions.
Locks are closed. 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.
Accumulated rust or grime interfering with
the lock operation. Thoroughly clean the fifth wheel and re-lubricate in
accordance with the procedure in Section 12.
The locks are adjusted too tightly. Check lock adjustments in accordance with the procedure
in Section 14.
The locks may be damaged. The fifth wheel MUST be rebuilt using the appropriate
service kit.
Damaged, bent release handle. Replace release handle using the appropriate service kit.
Damaged, bent yoke shaft from
improper coupling. The fifth wheel MUST be rebuilt using the appropriate
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 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.
Difficult to Couple to Trailer:
9 POSSIBLE CAUSE REMEDY
The tractor may be putting pressure
against locks. 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.
Tractor too low. Raise tractor suspension to proper ride height.
The secondary lock is not released. 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.
Accumulated rust or grime interfering with
the lock operation. Thoroughly clean the fifth wheel and re-lubricate in
accordance with the procedure in Section 12.
The locks are adjusted too tightly. Check lock adjustments in accordance with the procedure
in Section 14.
Difficult to Uncouple from Trailer:
18. Troubleshooting