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 146 of 323

CHAP 5, SEC X

STEER VALVE BODY ASSEMBLY-REBUILD

PAR 111-116

Section X. STEER VALVE BODY ASSEMBLY–REBUILD

t . Install plug 42, if removed, into oil

transfer plate 43. Torque plug 42 to 35-50

pound-inches.

112. DESCRIPTION

Refer to par. 20 for the description of

the steer valve body assembly.

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

a . Remove retaining rings 22 an 23

from steer shaft assembly 45.

b . Remove steer indicator 21 an d

preformed packing 20.

c . Remove steer shaft assembly 45,

detent ball 43 and spring 42.

d . Remove steer valve cover plugs 31

and 32.

e . Remove the right- and left-steer

valve assemblies 24 through 30 and 33

through 39, as assemblies.

f . Do not disassemble steer valve

assemblies unless parts replacement is

necessary. If necessary, hold the slotted

end of the steer valve stem 25 or 38 with

a screwdriver and remove nut 30 or 33

from the opposite end.

g . Remove stem 25 or 38 and the

steer regulator valve 26 or 37 from the

steer valve 29 or 34.

h . Remove seal 24 or 39 from stem

25 or 38.

i . Remove internal valve spring 28

or 35 and external valve spring 27 or 36.

j . Using a 9/16-inch wrench, remove

eight cap screws 8 and lock washers 9 re-

taining steer valve cover 10. Remov e

cover 10 and gasket 11.

k . Remove two steer pressure regu-

lator valve springs 12 and 13.

l . Remove steer pressure regulator

valve assembly. 14.

114 Change 2

m . Deleted.

n . Do not remove tube 41 from steer

valve body 40 unless replacement i s

necessary. If necessary, collapse the tube

and remove it from the valve body.

o . Do not remove needle bearings 19

and 44 from steer valve body 40 unless

replacement is necessary. If necessary,

drive the bearings from the valve body.

114. CLEANING

Refer to par, 71 for cleaning recom-

mendations.

115. INSPECTION AND REPAIR

Refer to par. 72 for general inspec-

tion and repair recoin inundations. 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.

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

a . If needle bearings 19 and 44 were

removed from the steer valve body, install

new bearings, pressing against the num-

bered side of the bearing cage. Press

bearing 19, from the top side of the valve

body, 0.200-inch below the surface ad-

jacent to the bearing bore.

b . Install bearing 44, from the bot-

tom side of the valve body, 0.150-inch

below the surface adjacent to the bearing

bore.

c . If tube 41 was removed from steer

valve body 40, install new replacement.

Press tube into body, 0.241-0.251 inch

below the machined mounting surface of

the valve body.

d . Deleted.

e . If the two steer valves, removed as

assemblies (24 through 30 and 33 through

39), were disassembled, install the internal

valve spring 28 or 35 and external valve

spring 27 or 36 into steer valve 29 or 34.