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 148 of 323

CHAP 5, SEC XI

RELAY VALVE BODY ASSEMBLY-REBUILD

PAR 117-121

Section XI. RELAY VALVE BODY ASSEMBLY—REBUILD

117. DESCRIPTION

Refer to par. 19 for the description of

the relay valve body assembly.

118. DISASSEMBLY (fig. 382, fold-out 11)

a . Using a l/2-inch wrench, remove

three cap screws 70 and lock washers 69

from relay valve body 73.

b . Remove relay valve cover 68 and

gasket 67.

c . Remove two steer clutch rela y

valves 64 and 65 and spring 66.

d . Remove drive clutch relay valve

plug 78 and gasket 77.

e . Remove drive clutch relay valve

76, spring 75 and pin 74.

f . Using a l/2-inch wrench, remove

three cap screws 58 and lock washers 59.

Remove cover assembly 60 and gasket 63.

g . Plugs 71 and 72 may be removed

to aid in cleaning, if necessary.

119. CLEANING

Refer to par. 71 for cleaning recom-

mendations.

120. INSPECTION AND REPAIR

Refer to par. 72 for general inspec-

tion

and

repair

recommendations.

Repair

and rebuild points of measurement for fits,

clearances and wear limits are indicated

by small, lower case letters in fig. 382,

fold-out 11. Refer to par. 245 for wear

limits information.

121. ASSEMBLY (fig. 382, fold-out 11)

a . Install plug 71 if it was removed.

Torque plug 71 to 96-120 pound-inches.

Install plugs 72 if they were removed.

Torque plugs 72 to 50-60 pound-inches.

b . Install cover assembly 60 an d

gasket 63.

Secure the cover with three

5/1 6-18 cap screws 58 and lock washers

59. Torque the screws to 13-16 pound-

feet.

c . Install steer clutch relay valve 64,

long stem end first, into relay valve body

73.

d . Install the other steer clutch relay

valve 65, short stem end first, into the

valve body.

e . Install the steer clutch relay valve

spring 66.

f . Install cover 68 and gasket 67.

Secure the cover with three 5/16-1 8 cap

screws 70 and lock washers 69.

Torque

the screws to 13-16 pound-feet.

g . Install drive clutch relay valve pin

74 and spring 75 into valve body.

h . Install drive clutch relay valve 76,

short stem end first, into the valve body.

i . Install gasket 77 and plug 78 .

Torque plug 78 to 40-50 pound-feet.

116 Change 2