b. Place hub (3) on end, large end down. Install
(15). Pack sealing lips with GAA grease and install the
seal with the spring pointing toward the drum (10).
outer race of bearing (16) in housing (15).
c. Install housing (15) on hub (3) and pack the
Remove sprocket, end plate, and end plate screws
space between bearings (17) and (16) with GAA grease.
h. Install drum (10) using screws (9). Tighten
Warm the inner race of bearing (16) and install the race
screws to 20 to25 ft-lb (27--34 N m). Install lock ring(8).
over outer diameter of hub (3). Exact location on the hub
Be sure holes in the lock ring line up with grease fittings
is not important at this time.
d. Warm bearing (1) and install it on shaft (2). Ap-
(21). Install relief fittings (22).
i. Install lock ring (8) with the holes in the ring lo-
ply force to the inner race only, and be sure race is firmly
cated in line with the grease fittings (21). Install relief
against the shaft shoulder.
e. Install shaft (2) and bearing (1) in hub (3), with
j. Warm bearing (7) in an oil bath and install it
the bearing firmly against the shoulder of hub (3). Refer
firmly against lock ring (8).
to figure 2-7 and install sprocket, end plate, and end
k. Prepack seal (6) with GAA grease and press the
plate screws as shown. Do not lockwire the screws
seal into position on the drum (10). Be sure seal lip is
because they will be removed later in this assembly
toward bearing (7).
l. Install packing (5) in spacer (4). Lubricate the
f. Assemble drum (10, fig. 5-9) on hub (3) using
bore of spacer and O-ring, and slide the assembled
three screws (9) spaced in even intervals. Tighten
items into position on shaft (2). Be careful to avoid
screws to 20 to 25 ft-lb (27---34 N. m) using a torque
damage to the seal as the spacer enters the seal.
wrench, and check shaft end play with a dial indicating
micrometer. Remove drum (10) and install sufficient
number of shims (12), (13) and (14) to allow end play of
0.003 to 0.005 inch.
Refer to paragraph 2-14 and install the reversing shaft
g. Press seal (11) into the bore of clutch housing
REPAIR OF HORIZONTAL SWING SHAFT
out of the bottom of hub (8). Bearing (6) will come off on
shaft (7). Remove bearing (6) from the shaft.
The horizontal swing shafts left and right) are identical in
c. Remove bearing (9), packing (10) and seal (11).
construction, and are located on each side of the vertical
Remove bearing (12) from bore of drum (13) using a
swing shaft as shown in figure 5-1. The left horizontal
suitable puller. Remove lock ring (14).
swing shaft clutch turns the revolving frame to the right.
d. Remove screws (15) and remove drum (13) and
The right horizontal swing shaft clutch turns the revolving
seal (16). Remove shims (17), (18) and (19).
frame to the left.
e. Block housing (20) and press hub and sprocket
(8) from the housing. Press on the end of the hub which
is tapped for screws (15). Bearing (21) will remain in the
Remove the horizontal swing shaft in accordance with
housing and the inner race of bearing (22) will come off
instructions given in paragraph 2-15.
on the hub.
f. Remove remaining items, seal (23), fittings (27)
and relief fittings (28) from the assembly. Shims (25) and
a. Refer to figure 5-11 and remove lockwire (1),
(26), and packing (24) are removed when the as-sembly
screws (2) and washer(3). Remove bevel pinion (4) from
is removed from the machine.
shaft (7) and remove spacer (5).
g. Refer to paragraph 5-39c for disassembly and
b. Place the assembly on end, with sprocket end of
repair instructions for the horizontal swing shaft clutch.
the hub and sprocket (8) facing downward. Be sure
blocking is high enough to allow shaft (7) to be pressed