XA-3501
XA-351 SERIES
(Manufactured after 6/1/96)
XA-331 SERIES
TROUBLESHOOTING HINTS FOR
THIS MODEL FIFTH WHEEL TOP PLATE
ARE CONTAINED IN THIS SECTION.
Closed loop
release handle
Bolt and nut retention
for bracket pin
1
FW35 (XA-351) FIFTH WHEEL
Trouble-Shooting Guide
Serial Number Tag Identification
For this troubleshooting section, the
part number on the serial number tag
should begin with one of the following:
• FW35
• XA-351
Part & Serial
Number Tag
XA-3501 SERIES
IF YOU HAVE THIS FIFTH WHEEL,
REFER TO THE FW3500 (XA-3501)
TROUBLESHOOTING GUIDE SECTION.
Open loop
release handle
Bracket pin
retained internally
YOKE SHAFT EXTENDS
OUT OF THE FRONT
OF THE FIFTH WHEEL
WRONG
TROUBLESHOOTING
SECTION
CORRECT
TROUBLESHOOTING
SECTION
Before proceeding, verify that your fifth wheel top plate
is a XA-351 model by following the 3 steps below:
➊
➋
➌
XL-FW453-01
FW35 (XA-351) FIFTH WHEEL
Trouble-Shooting Guide
2
TABLE OF CONTENTS
Difficult to uncouple from trailer. . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 4
Difficult to couple to trailer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 6
Movement within jaw. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Lock pins rising . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Hard steering or binding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
FW35 (XA-351) exploded view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
REBUILD KIT NUMBERS
LEFT HAND RELEASE
RK-351-A-L (w/Automatic Secondary Lock)
RK-351-A-02-L (w/Manual Secondary Lock)
RIGHT HAND RELEASE
RK-351-A (w/Automatic Secondary Lock)
RK-351-A-02 (w/Manual Secondary Lock)
LEFT HAND (ROAD SIDE) RELEASE SHOWN
3
FW35 (XA-351) FIFTH WHEEL
Trouble-Shooting Guide
Cause
1. The secondary lock is not released.
2. The tractor may be puttng
pressure against locks (pulling
locks tight against kingpin).
3. Tractor too low
4. Rust or grime build-up on locking
mechanism.
5. Bent kingpin, damaged upper
coupler plate or improper use of
“lube plate.”
6. Bent kingpin, damaged bolster
plate, or improper use of “lube
plate.”
PROBLEM: Difficult to uncouple from trailer
Remedy
1. If manual secondary, pull manual
secondary release handle out and up,
hooking it on casting as shown in
Figure 1.
2. Lock the trailer brakes, then back the
tractor tight against the kingpin to
relieve pressure on the locks. Lock the
tractor brakes. Pull release handle.
3. Raise tractor suspension to proper ride
height.
4. Spray a light lubricant or apply a
lightweight grease on all moving parts
including the cam plate, yoke, lock pins,
and release handle and spring. Operate
several times to work in the lubricant.
Follow recommended lubrication schedule
as detailed in Service Bulletin XL-SB036-01.
5. Check the kingpin and upper plate
coupler as detailed in Holland Service
Bulletin XL-SB020. Remove any improperly
installed or improperly specified lube
plates. Refer to Holland Service Bulletin
XL-SB004-01 for lube plate warnings.
6. 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 2 below,
and Service Bulletin XL-SB-020.)
Figure 1
38”
.06” MAX.
.25” MAX.
.12” MAX.
19
” R.
10
” R.
90
° ±1°
Figure 2
BOLSTER PLATE
2.875 DIA.
2.000 DIA.
2.815 DIA.
3.312
2.750
1.250
1.375
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