6
FW35 (XA-351) FIFTH WHEEL
Trouble-Shooting Guide
Cause
PROBLEM: Difficult to couple to trailer (con’t.)
Remedy
7.
Bent kingpin, damaged upper
coupler plate or improper use of
“lube plate.”
7.
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.
Check the kingpin with a Holland
TF-0110 kingin gage and bolster plate
with a 48˝ straight edge – repair or
replace as required (See
Figure 6
below,
and Service Bulletin XL-SB020-01.)
38”
.06” MAX.
.25” MAX. .12” MAX.
19” R.
10” R.
90
°
±
1
°
Figure 6
BOLSTER PLATE
2.875 DIA.
2.000 DIA.
2.815 DIA.
3.312
2.750
1.250
1.375
Cause
1.
Kingpin wear.
2.
Fifth wheel out of adjustment.
3.
Fifth wheel cannot be adjusted
further.
PROBLEM: Excessive movement in the lock jaws
Remedy
1.
Check kingpin for acceptable wear with
Holland TF-0110. Replace kingpin, if
necessary.
2.
Adjust fifth wheel following the procedures in
the Lock Adjustment section of the
maintenance instructions included with your
fifth wheel (Holland publication XL-FW308).
3.
Rebuild fifth wheel using proper rebuild kit.
