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 144 of 323

CHAP 5, SEC IX

CONTROL VALVE ASSEMBLY AND

PAR 103-108

OIL TRANSFER PLATE—REBUILD

g . Remov e

main-pressure regulator

valve springs 20 and 21 and valve assem-

bly 14. Remove plug 13.

h . Remove hexagon-head plug 1 1

from valve body 12.

104. CLEANING

Refer to par. 71 for cleaning recom-

mendations.

105. 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. 383,

fold-out 12. Refer to par. 246, for wear

limits information.

106. ASSEMBLY (fig. 383, fold-out 12)

a . Install high-range knockdown plug

13, plain end first, into the largest of the

three bores in the main-pressure regulator

and lockup shift valve body 12. Position it

in the small bore at the bottom of the

large bore.

b . Into the same bore, install main-

pressure regulator valve 14, smaller end

first.

c . Install two main-pressure regula-

tor valve springs 20 and 21.

d . Install lockup shift valve 26, short

land end first, into valve body 12.

e . Install lockup shift valve spring 27.

f . Install plug 19 into sleeve 24. In-

stall-valve body cover assembly 23 and

gasket 22 and secure with six 5/16-18 bolts

29 and lock washers 28. Torque bolts 29

to 13-16 pound-feet.

g . Install l/8-inch hexagon-head plug

11. Torque plug 11 to 10-12 pound-feet.

h . Install seal ring 8 on valve retainer

plug 7.

i . Install lube regulator valve spring

10, valve 9 (large land end first) and plug 7.

j . Install retaining ring 6.

Section IX. CONTROL VALVE ASSEMBLY AND OIL TRANSFER PLATE—REBUILD

107. DESCRIPTION

Refer to par. 21 for the description of

the control valve assembly and oil transfer

plate.

108. DISASSEMBLY (fig. 383, fold-out 12)

a . Remove bolt 45, washer 46 and re-

taining ring 47 from throttle valve shaft

assembly 58.

b . Remove throttle valve shaft as-

sembly 58 from valve body 54.

c . Remove seal ring 57 from shaft

assembly 58.

d . Remove retaining ring 48 from

selector shaft assembly 56.

e . Lift off shift indicator 49 and in-

dicator spacer 50.

f . Remove selector shaft assembl y

56, detent ball 59 and detent spring 60

from valve body 54.

g . Remov e

preformed packing 5 1

from valve body 54.

h . Using a 1/2-inch wrench, remove

nine bolts 70 and 71, and lock washers 69

and 72 retaining control valve body cover

73.

i . Remove valve body cover 73 and

gasket 74.

j . Remove throttle regulator valve

spring 68, valve assembly 63, throttle

valve spring 62 and throttle valve 61.

112 Change 2