3
1.
Before attempting to rebuild, review each
troubleshooting hint on the front page of this
manual. You may find that rebuilding is not
necessary.
2.
If rebuilding is required, check the front page
of this manual to be sure you have the
correct kit for the fifth wheel you are about
to rebuild.
3.
Totally disassemble and clean the top plate.
4.
Inspect the top plate for cracks and a loose
lock pin hole. If the plate is cracked, or if the
lock pin hole is elongated, the top plate must
be discarded.
NOTE:
When rebuilding, use only HOLLAND
rebuilding kits and replace all roll pins, cotter pins,
springs, bolts, nuts and washers. Also, check the
rebuild kit and verify that all parts are present.
Before starting to reassemble the fifth wheel, it
may be necessary to fabricate a helper block. It
can be made from hardwood or steel. Refer to
Figure 1
for proper dimensions.
1.
Install the adjusting screw (
20
) through the
hole located in the throat of the fifth wheel
casting. Install compression spring (
23
) over
the screw, then slide the adjusting wedge (
22
)
over the screw. Compress the spring and
install lock nut (
21
). Tighten screw with 1⁄2˝
Allen wrench until nut is flush with the end
of the bolt.
2.
Lubricate the tail and faces of the plunger
with a light grease. Install spring (
18)
over
the tail of the plunger (
17
), insert through
plunger slots in the casting. Use the helper
block to hold the plunger (
17
) in place with
the spring compressed.
3.
Check the fit-up of the release lever (
15
) and
plunger (
17
). The rounded end of the release
lever must fit freely into the slot in the
plunger. If the parts do not fit together freely,
it will be necessary to deburr the rounded
end of the release lever (
see Figure 2
).
4.
Install the release handle (
16
) through the
guide slot in the casting. Install the release
lever (
15
) on the handle (
16
). The open end
of the release handle must face the rear of
the casting, as shown in
Figure 3
.
5.
Install nylon bushing (
24
) in the release lever
(
15
) so that the flange is between the casting
and lever. Install the release arm (
15
) in the
slot on the plunger (
see Figure 2
), install
washer (
13
) on cap screw (
12
) and insert
through release lever (
15
) and screw into
casting.
CAUTION: DO NOT OVERTIGHTEN
as
release arm (
15
) must move freely. Install
hex head lock nut (
14
) on cap screw (
12
)
and tighten.
8"
1"
1.5"
-2"
3"
Figure 1
Figure 3
REBUILDING PROCEDURES
WARNING
Do not attempt to repair or
rebuild if the top plate is cracked
or distorted, or the lock pin does
not fit tightly, as the top plate may
fail or the locks may malfunction.
Figure 2
Figure 4
1/2” MAX.
