Holland Hitch XA-71-DA - Manual (Page 5)

XL-FW232-02 7
REBUILDING PROCEDURES
continued
Swinging Lock Installation
1. Place the swinging lock (6) into position, compressing
spring (7). For spring position, see FIGURE 3.
NOTE: The lock pin (5) has a hole for a grease
fitting (25).
Position the pin
so that the hole
faces the front
of the casting.
Drive the lock
pin (5) through
the holes in the
casting and
swinging lock
and secure with
a cotter pin (4).
Install the
grease fitting so
that it faces to
the side and
will be accessible
from the left side of the tractor. (See FIGURE 14).
2. Turn the fifth wheel upright.
Check the Primary Lock Operation:
1. Lock the fifth wheel using a Holland TF-TLN-5001 (2˝)
lock tester (35) or a Holland TF-TLN-1500 (3
1 ⁄
2
˝)
lock tester (35A) (as appropriate for the fifth wheel
being rebuilt). Refer to HOLLAND Publication XL-FW340
for description and instructions for Holland TF-TLN-5001
Lock Adjustment Tool and, Publication XL-FW130 for
Holland TF-TLN-1500 Kingpin Lock Tester.
2. Pull the primary release handle (16) out, raise it up
and engage the handle lug with the top plate casting
(see FIGURE 15).
3. Pull the primary release handle (16) out further and
install a small piece of 1/4˝ stock (not supplied)
between the handle lug and the casting.
4. Unlock the fifth wheel by removing the lock tester.
When operating properly, this action will drop the
1/4˝ stock and the release handle will drop down
and move to the locked position.
5. If the 1/4˝ stock does not drop out, go back to STEP 5
on page 6 and bend the release lever (15) slightly in
the opposite direction.
6. Repeat STEP 4, above.
7. Turn the fifth wheel back over.
IMPORTANT: Before proceeding with Secondary Lock
Installation, turn to page 10 to determine which instruc-
tions you should follow.
Secondary Lock Installation:
1. Position the secondary lock (10) in the closed position
in the casting, as shown in FIGURE 16. Complete Steps
1, 2, and 3 before installing the spring, release handle,
and the secondary lock pin. Align the secondary lock
pin holes. Rotate the secondary lock until it makes
contact with the casting at point C as shown in
FIGURE 16. Check the rough location of the end of the
secondary lock in relation to the swinging lock.
It should be 3/16˝ (0.188˝) ± 1/16˝ (0.06˝) from
point A on the swinging lock (see FIGURE 16) when the
secondary lock is resting against the casting at point C.
2. If the dimension is less than 1/8˝ (0.125˝), remove the
secondary lock (10) and place a bead of weld on the
fifth wheel casting at point C and grind smooth.
If the dimension is greater than 1/4˝ (0.25˝), remove
the secondary lock and grind at point D as shown
in FIGURE 17.
3. After a final check of the dimensions, coat the lock pin
hole in the secondary lock (10) with Never-Seez
® (sup-
plied with kit). DO NOT use a substitute lubricant.
4. Install the secondary lock release handle (9) into
the casting. Install the secondary lock (10) onto the
handle. Install the cotter pin (8) in the handle and
spread it. Drive the secondary lock pin (3) through the
holes in the casting and the secondary lock, and
secure with a cotter pin (2). Install a grease fitting (25)
in the lock pin so that the fitting faces the side, and
will be accessible from the left side of the tractor.
Install spring (11) by fitting the small diameter end
over the projection on the secondary lock (10) and
the large diameter end into the spring pocket in
the casting.
6
5 25
4
FIGURE 14
16 Release handle lug
FIGURE 15
3/16˝ 1/16˝
A
C
FIGURE 16
D
Grind flush if necessary but
do not exceed flush condition.
FIGURE 17
6 XL-FW232-02
REBUILDING PROCEDURES
continued
Release Arm and Release Lever Installation
1. Check the fit of the release lever (15) inside the slot in
the 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 9).
Once you have checked the fit, remove the release
lever in order to attach it to the release arm in the
following step.
2. Install the release handle (16) through the guide slot
in the casting. Install the end of the release handle
(16) into the hole in the end of the release lever (15).
The open end of the release handle must face the
front of the casting, as shown in FIGURE 10.
Guide the round end of the release lever through the
guide rib in the casting.
3. Install the nylon
bushing (24) into the
release lever (15) so
that the flange is
between the casting
and the lever (see
FIGURE 11).
Install the release
lever into the slot on
the plunger. Install
the washer (13) onto
the cap screw (12)
and insert them
through the release
lever (15) and through
HOLE B in the casting.
15 RELEASE
LEVER
Slot in the
plunger
Plunger
guide rib
FIGURE 9
16
Release
handle
Guide slot in casting
15 Release lever
FRONT
Guide
rib
FIGURE 10
15
13
14
24
12
HOLE B
FIGURE 11
4. Install hex lock nut (14) and tighten.
DO NOT OVERTIGHTEN as the
release lever (15) must move
freely. If it does not move freely, the fifth wheel
may not couple properly or completely and could
result in tractor/trailer separation causing death
or serious injury.
5. Remove the helper block. Check the travel of the
plunger. With the release handle in the closed
position, the edge of the release lever (15) should
be a maximum of 1/2˝ from the top plate casting rib
(see FIGURE 12).
If this condition does not exist, check that the rounded
end of the release lever (15) is not hitting the plunger
guide rib of the casting, see FIGURE 9. If the rounded
end is hitting the rib, bend the rounded end of the
release lever down so that it goes deeper into the
plunger slot. If the release lever is still greater than
1/2˝ from the casting rib, remove the release lever and
bend it (as shown in FIGURE 13) until it is less than
1/2˝ from the casting. If the square end of the release
lever — and/or the end of the release handle (16) —
is hitting the casting rib, grind the corner of the
release lever (15) — and/or the end of the handle (16)
— until it is 1/2˝ clear of the casting rib.
1/2˝ Max.
16
15
Closed
FIGURE 12
SUPPORT HERE
BEND HERE
FIGURE 13