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FW35 (XA-351) FIFTH WHEEL
Trouble-Shooting Guide
Cause
1. Kingpin too short or improperly
installed “lube plate.”
2. Too much vertical movement of
jaw(s) in casting.
PROBLEM: Lock pins (XA-07292-T) raising
Remedy
1. Check the kingpin and upper plate
coupler as detailed in Holland Service
Bulletin XL-SB020-01. Remove any improperly
installed or improperly specified lube
plates. Refer to Holland Service Bulletin
XL-SB004-01 for lube plate warnings.
2. Shim jaw(s) in casting using Part No.
XB-05859-1 as shown in Figure 7.
NOTE: Do not shim tight. Maintain .040˝
to .060˝ free play between the lock jaw
and the casting.
Cause
1. Lack of lubrication on fifth
wheel top surface.
2. Warped trailer upper coupler
plate.
PROBLEM: Hard steering or binding
Remedy
1. Lubricate top of fifth wheel plate using a
high pressure, lithium-based grease.
Follow recommended lubrication schedule
as described in Service Bulletin XL-SB036.
2. Check upper coupler plate for flatness.
Replace if necessary. (Refer to Service
Bulletin XL-SB020-01 for additional information
on upper coupler plate specifications.)
Figure 7
Top of
Fifth Wheel
Plate
Lock Pin
Cotter
Pin
Spacers
Lock
Jaw
Fifth
Wheel
Casting
BOLSTER PLATE
2.875 DIA.
2.000 DIA.
2.815 DIA.
3.312
2.750
1.250
1.375