TM-9-2520-234-35

POWER TRAIN ASSEMBLY; ALLISON MODEL XTG411-2A

TECHNICAL MANUAL; FIELD AND DEPOT MAINTENANCE MANUAL

JULY 1962

TM-9-2520-234-35 - Page 177 of 323

*C2

PAR

170-173

CLUTCH PISTONS AND HOUSINGS REBUIL D

CHAP

5,

SEC

XXI I

170. INSPECTICON AND REPAIR

Refer to par. 72 for general inspection

and repair recommendations. Repair and re-

build points of measurement for fits, clear-

ances and wear limits are indicated by small,

lower case letters in figs. 377 and 381, fold-

outs 6 and 10. Refer to pars. 240 and 244 for

wear limits information.

ing tool (fig. 38) against the spring retainer,

compress the piston return springs and install

the retaining ring (fig. 210).

f . Install the output clutch hub (fig. 209).

g . Install seven internal- and seven ex-

ternal-splined output clutch plates alternately,

beginning with an internal-splined clutch plate

(fig. 209).

171. ASSEMBLY (figs. 377 and 381,

h . If the bearing was removed from the

fold-outs 6 and 10)

geared steer sun gear, press in a new bearing

until firmly seated. Install the retaining ring

Note . The left- and right-output clutches

(fig. 209).

are identical, therefore the following

assembly procedures apply to eithe r

i . Install the preformed packing on the

assembly .

geared steer sun gear assembly (fig. 209).

a . Install expander 36 and ring seal 37

j . Using two 5/16-24-inch bolts, install

on clutch plate and hub assembly 35.

the geared steer sun gear assembly (fig. 209).

b . Install expander 39 and ring seal 38

k . Install three retainers and six lock

on clutch piston 41.

plates (fig. 208).

c . Install the clutch piston in the clutch

l . Install twelve 5/16-24 bolts. Torque

plate and hub assembly (fig. 210).

the bolts to 14-18 pound-feet. Bend corners

of the lock strips against the heads of the bolts

d . Install eighteen piston return springs

(fig. 208).

44 (fig. 377, fold-out 6) and retainer 43.

m . Install two hook-type seal rings on the

e. Using a hydraulic press and compress-

hub of the output clutch assembly (fig. 208).

—

Section XXII. CLUTCH PISTONS AND HOUSINGS — REBUILD

172. DESCRIPTIO N

piston assemblies are

Refer to par. 12 for the description of the

intermediate-range piston assembly and par.

16 for the description of the steer clutch pis-

following describes the

the left assembly.

identical. The

disassembly o f

ton assembly.

(1) Remove two expanders 58 and 60 and

173. DISASSEMBLY (figs. 376, 377 and 381,

ring seals 57 and 59 (fig.

-

377, fold-out 6) from

fold-outs 5, 6 and 10)

steer clutch piston 61.

a . Right- or Left-steer Clutch

Piston Assembly

Note . The right- and left-steer clutch

14 5