SUBSECTION 6B
HORIZONTAL SWING SHAFTS
GENERAL
2. Inspect pinion (04) and sprocket (22) for excessive wear
or damage. If they are scored, pitted, ridged or worn they
This subsection contains the information necessary to re-
should be replaced.
move, disassemble, assemble and install the horizontal
swing shafts.
3. Grease all seals and O-rings prior to installation.
ASSEMBLY. To assemble the horizontal swing shaft, pro-
HORIZONTAL SWING SHAFT (2910J30-6)
ceed as follows (see Figure 6B-3):
GENERAL. The left and right horizontal swing shafts are
mounted in the side wall of the chain case. The bevel on the
1. Press seal (10) into housing (20).
horizontal swing shafts are in constant contact with the
bevel gear of the intermediate swing shaft.
NOTE
REMOVAL. To remove either horizontal swing shaft, pro-
All seals in this assembly should be installed with the
ceed as follows (see Figure 6B-3):
sealing lip and spring facing inward, toward the chain
case.
1. Remove the swing clutch assembly from the swing
shaft. See the topic, Removal, in Subsection 6F.
2. Heat the cone of bearing (21) and install it on the hub of
sprocket (22). Install the outer cup of the bearing in housing
2. Remove the chain case cover, loosen the drive chains,
(20).
and lift the chain off the sprocket of the shaft assembly to be
3. Install the outer cup of bearing (13) into housing (20).
removed (see Subsection 4E).
4. Place sprocket (22) on end, with the sprocket end down.
3. Support hub (20) and remove nuts (18) and lockwashers
Carefully place housing (20) over the sprocket hub. Pack the
(19). Remove the horizontal shaft assembly from the ma-
area between seal (10) and bearing (13) with multipurpose
chine and place it on a clean bench. This assembly weighs
grease.
approximately 420 Ibs.
5. Install the inner cone of bearing (13) over the hub of
DISASSEMBLY. To disassemble either horizontal swing
sprocket (22).
6. Assemble drum (24) on the hub of sprocket (22) with
1. Remove washer (03) and pinion (04) from shaft (05).
three capscrews (25). Do not install shims (14, 15 and 16) at
2. With sprocket (22) on blocking, press shaft (05) out of the
this time. Tighten the capscrews to 20 to 25 ft-lbs.
assembly from the clutch end. Bearing (23) will come out
with the shaft.
7. Hold housing (20) stationary and check the end play at
3. Remove spacer (30), O-ring (29) and oil seal (28).
the sprocket with a dial indicator. After noting the end play,
4. Pull bearing (27) from drum (24) Ring (26) may now be
remove the drum and install sufficient shams (14, 15 and
removed.
16) to provide from 0.003 to 0.005 inch end play.
5. Remove drum (24), seal (17) and shims (14, 15 and 16).
8. Press seal (17) into the bore of the clutch housing.
6. Block housing (20) and press sprocket (22) out of the
housing, pressing on the end of the sprocket hub which is
9. Reinstall the clutch drum with the measured amount of
tapped for capscrews (25). The cone of bearing (21) will
shims (14, 15 and 16) in place. Tighten capscrews (25) to
come out with the sprocket.
120 ft-lbs (dry).
10. Install ring (26) with the hole in the ring aligned with
7. Remove all remaining items from the housing and
grease fitting (12). If the ring is incorrectly installed, bear-
sprocket hub.
ing (27) may not receive adequate lubrication.
INSPECTION AND REPAIR. Prior to assembly, all swing
clutch parts should be inspected as follows:
11. Press bearing (27) firmly against ring (26).
12. If bearing (23) was removed from shaft (05), heat and
1. Replace all oil seals and O-rings. Any bearing which
replace it at this time.
shows signs of wear or damage should be replaced.