Section XXIX. MAIN CONTROL SELECTOR VALVE BODY ASSEMBLY-REPAIR

TM 9-2520-249-34&P

Table 7-24. Repair Standards (Brake Coolant Pump)-Continued

Wear limit

Reference

Size and fit

DS/GS

Foldout

Item

Point of measurement

of new parts

maintenance

57a

Outside diameter of bearing .................

To press fit 0.8075

to 0.8088 cover bore

58a

Inside diameter at bearing surface of cover 0.8075 to 0.8078

0.8083

57a,

Fit of bearing in cover ...........................

0.0003L to 0.0013T

58a

61a

Free length of spring.............................

3.500

61a

Length under load ................................

1.900 at 2.7 to

1.900 at

3.3 lb

2.55 lb

*Replace when worn beyond new dimensions.

Section XXIX. MAIN CONTROL SELECTOR VALVE BODY ASSEMBLY-REPAIR

Remove governor plug valve (21), shift

7-170. Description

inhibitor plunger (24) and shift inhibitor spring (23).

Refer to paragraph 2-22 for a description of the selector

m. Remove plunger retaining ring (22) from

valve body components.

shift inhibitor plunger (24).

n. Remove throttle regulator valve plug (25)

7-171. Disassembly

and regulator plug gasket (26) from selector valve body

(FO-12)

(42).

a. Remove detent retaining plug (36), gasket

o. Remove throttle regulator spring (27) and

(37), detent spring (38) and detent ball (39) from

throttle regulator valve assembly (28).

selector valve body (42).

p. Remove throttle valve spring (29, FO-12)

b. Remove self-locking bolt (51), flat washer

and throttle valve assembly (30) from selector valve

(50), and throttle lever retaining ring (49) from throttle

body (42).

valve lever assembly (34). Remove the lever assembly.

q. Remove two plugs (43) from selector valve

c. Remove preformed packing (33) from

body (42).

throttle valve lever assembly (34).

Do not remove selector lever bearings (41)

d. Remove indicator retaining ring (48),

unless replacement is necessary.

selector indicator (47) and washer (46) from selector

control shaft and lever (32).

7-172. Cleaning

e. Remove selector control shaft and lever

Refer to paragraph 5-2 for cleaning recommendations.

(32, FO-12) from selector valve body (42). Remove

selector lever pin (31) from shaft and lever (32).

Remove selector lever gasket (45) and

7-173. Inspection and Repair

selector lever preformed packing (44) from selector

Refer to paragraph 5-3 for general inspection and repair

valve body (42).

recommendations.

g. Remove four bolts (15), lockwashers (14),

flat washers (13), selector valve body cover (12) and

7-174. Repair Standards

gasket (11) from selector valve body (42).

a. Refer to paragraph 5 4 for explanation of

h. Remove selector valve assembly (8) from

repair standards.

selector valve body (42).

b. Refer to repair standards (table 7-25).

Do not remove plug (10) from selector

valve (9).

7-175. Assembly

Remove shift inhibitor retaining plug (16)

(FO-12)

and retaining plug gasket (17) from selector valve body

a. If selector lever bearings (41) were

(42).

removed from selector valve body (42), install new

k. Remove third- and fourth-signal plug valve

replacements. Install one bearing (41) from the outer

(18), fourth-signal valve (19, FO-12) and inhibitor

side of selector valve body (42), pressing against the

compensator spring (20).

numbered end of the bearing cage. 0.200 inch below

7-53