and remove breather housing (61) and breather pipe (62)
from gear housing (72). Oil level gage (63), gage tube
a. Refer to figure 5-2and remove screws (5) and
(64) and pipe plug (65) can now be removed from the
lock washers (6) from driving ring (18).
b. Remove pipe plug (7) from the gear cover on the
q. Remove bearing spacer (67), retaining ring (68)
output end, and remove screws (8). Lift off gear cover
and press clutch shaft (70) and bearing (69) from gear
(9). Seal (10) will come off with the gear cover. Remove
housing (72). Remove bearing (69) from shaft (70).
Bearing (71) can now be pressed from gear housing (72).
c. Remove setscrew (12), and slide output shaft
(13) from the ring gear. Bearing (14) will come off with
the output shaft along with ring gear (15) Press bearing
5-4. Cleaning, Inspection and Repair
(14) from shaft (13 Remove fitting (16) from shaft (70).
a. Clean all metal parts with cleaning solvent,
d. Remove pilot bearing (17) from shaft (70) using
Federal Specification P-D-680, or equivalent, before
a standard puller, and remove driving ring (18).
e. Remove shaft nut (19) and tabbed washer (20).
b. Replace all gaskets, cotter pins, tab washers, or
Discard washer (20).
f. Remove lubrication fitting (21), jam nut (22) and
c. Inspect clutch driving plate for signs of excessive
lock washer (23) from clutch housing, and push the end
wear. If a rivet is within one-sixteenth of an inch of the
of hose (40) into the housing
surface of the asbestos lining surface, the lining or plate
g. Pull plate and hub (24), springs (25), friction
should be replaced.
d. Inspect all threaded items and replace any item
plate (26) and floating plate (27) from shaft (70), using a
gear puller fitted so the jack screw bears on the end of
with damaged or elongated thread.
the shaft and grips around floating plate (27).
e. Inspect all parts for wear, scoring, cracks, or
other signs of damage or excessive wear, especially at
the roots of the gear teeth.
Fit the pilot bearing end of the clutch shaft with a
protective cap of steel, brass or bronze to
prevent damage to the shaft end.
Lubricate all seal lips with oil or grease before
h. Items (28) through (44) will come off with the
floating plate. Remove hub key (66) at this time.
i. Pull lock adjusting pin (28) out, and lock the
a. Refer to figure 5-2 and install driving ring (18)
assembly in the "out" position by inserting a piece of wire
and secure it with screws (5) and nuts (6).
or small nail in the cross-drilled hole of the pin. Rotate
b. Install operating shaft (50) approximately half
the adjusting yoke assembly (items 29 through 37) and
way into clutch housing (58). Sip the throwout yoke (51)
the sliding sleeve assembly (items 38 through 44) in a
onto the operating shaft and push the shaft through the
counterclockwise direction until they are removed from
opening on the other side of the clutch housing. Install
the threaded hub of hub and plate (24).
one of the Woodruff keys (52) into the operating shaft.
j. Remove hub and plate (4), springs (25), friction
Move the throwout yoke slightly on the shaft and install
plate (26) and floating plate (27).
the other key. Secure the throwout yoke with screws (48)
k. Remove adjusting pin (28) and spring (29).
and lock washers (49). Tighten the screws to 38 to 42 ft-
lb (52-57 N. m).
Remove cotter pins (30), finger levers (31), lever pins
(32), and adjusting yoke (33). Remove cotter pins (34),
c. Install clutch lever (47) and secure it with screw
lever link pins (35), lever links (36) and sliding sleeve
(45) and nut (46), tighten to 86 to 95 ft-lb (117-129 N
l. Remove hose elbows (38) and (39) and hose
d. Apply Loctite plastic gasket between clutch
(40). Remove screws (41) nuts (42), collar shims (43)
housing (58) and gear housing (72), and between the
and clutch collar (44),
gear housing and gear cover (9).
m. Remove screw (45k), nut (46) and clutch lever
(47). Remove screws (48) and lock washers (49). Side
Plastic gasket must cure for 12 to 24 hours at
operating shaft (50) from the clutch housing. Throwout
72F., or 20 to 30 minutes at 200F.
yoke (51) will be removed when the operating shaft is
removed. Remove keys (52) from the shaft.
e. Place gear housing (72) on wooden blocking on
n. Remove machine screws (53), inspection cover
a work bench, clutch side up, and pre bearing (69) into
(54) and gasket (55)
gear housing bore. Insert shaft (70) into bearing (69) and
o. Remove screws (56) and lock washers (57), and
secure with retaining ring (68). Install bearing spacer
separate clutch housing (58) from gear housing (72).
(67) into recessed hub of the gear housing.
Remove plug (59).
f. Install plug (59) in clutch housing (58) and mount
p. Remove seal (60) from the clutch housing bore,