Figure 7-58. Removing for installing) steer shaft assembly

TM 9-2520-249-34&P

valve stems (81 and 108) from steer regulator valves

(82 and 107).

Remove the steer relay valve plug and

gasket from steer valve body (fig. 7-57).

g. Remove spring (76, FO-12), valve (75) and

plug valve (74).

h. Remove 12 bolts (55 and 122), flat washers

(57 and 120) and lockwashers (56 and 121) which retain

cover (119). Remove valve body cover (119) and

gasket (118) from valve body (109).

Remove detent spring (59), detent ball (60)

and drive relay valve spring (117) and stop pin (58).

Remove drive relay valve (116).

k. Remove retaining rings (66 and 67) and

pivot valve indicator (65) from pivot valve (63).

Remove pivot valve (63, FO-12) from steer

valve body (109).

m. Remove preformed packing (64) from steer

valve body (109).

n. Remove plugs (68) from steer valve body

Figure 7-57. Removing (or installing) steer valve plunger

(109).

and related parts.

o. Do not remove dowel pin (62) unless

b. Remove retaining rings and indicators from

replacement is necessary.

pivot valve and steer lever shaft assembly (fig. 7-57)

p. Do not remove detent sleeve (111) unless

c. Remove steer shaft assembly, blocks,

replacement is necessary.

detent hall and spring from steer valve body (fig. 7-58)

q. Do not remove steer shaft needle bearings

(73) unless replacement is necessary.

7-178. Cleaning

Refer to paragraph 5-2 for cleaning recommendations.

7-179. Inspection and Repair

Refer to paragraph 5-3 for general inspection and repair

recommendations.

7-180. Repair Standards

a. Refer to paragraph 5-4 for explanation of

repair standards.

b. Refer to repair standards (table 7-26).

7-181. Assembly (FO-12)

a. If needle bearings (73) were removed from

steer valve body (109), install new replacements. Install

one needle bearing into top of the valve body, pressing

against the numbered side of the bearing cage, 0.200

inch below the surface adjacent to the bearing bore of

Figure 7-58. Removing for installing) steer shaft

the valve body. Install the remaining bearing (73),

assembly.

pressing against the numbered side of bearing cage,

d. Remove steer control shaft preformed

from the bottom side of the valve body, 0.150 inch

packing (72, FO-12) from steer valve body (109).

below the surface adjacent to the bearing bore of the

e. Remove steer valve assemblies (79 and

valve body.

100).

Do not disassemble these parts unless

b. If detent sleeve (111) was removed, install

replacement is necessary. If necessary, remove nuts

it from the lower side of steer valve body (109). Press

187 and 101), steer valves (86 and 102) and steer

the sleeve to 0.241 to 0.251 inch below the valve body

regulator valve springs (103 and 104), and (84 and 85)

mounting surface.

from steer regulator valve assemblies (80 and 106).

Remove stops (83 and 105). Remove steer regulator

7-56