Figure 7-62. Removing (or installing) brake apply shaft.

TM 9-2520-249-34&P

holes provided in cover (37) and brake apply shaft (74).

Remove the steel strip.

Figure 7-62. Removing (or installing) brake apply shaft.

Figure 7-63. Installing brake apply assembly.

m. Install the sealring onto the brake apply

u. Secure brake apply body assembly (79) to

shaft. Refer to figure 7-62.

housing cover (37) with two bolts (93), two bolts (85) and

n. With the brake apply shaft held in a soft

their washers (94 and 84). Refer to figure 7-60.

jaw vise, install the brake apply body with components

v. Install indicator washer (30, FO-13) and

onto the brake apply shaft (fig. 7-62). Rotate the splined

two retaining rings (29) on brake apply shaft (74).

brake lever, cam and plate to index with the blind spline

NOTE

on the brake shaft.

Repeat procedures outlined in c through v,

o. Install washer (92, FO-13), onto brake

above,

assemble

and

install

apply shaft (74) and secure it with retaining ring (91).

corresponding components making up the

p. If seal (77) was removed from air valve

right brake apply mechanism. However,

(78), install a new seal.

rotation to index spring (46) will be

q. Install air valve assembly (76), smaller

clockwise instead of counterclockwise as for

diameter first, into brake apply valve body (82).

spring (73) in t, above.

Install spring (75) into housing cover (37).

w. Install the right and left brake adjustment

s. Install spring (73) into housing cover (37),

access covers (40 and 24, FO-13) with gaskets (39 and

making sure that the end of the spring is engaged with

23) temporarily onto housing cover (37) and secure with

the hole in the cover.

six capscrews (44 and 28), lockwashers (42 and 26) and

Using a smooth thin steel strip to compress

flat washers (41 and 25).

the air valve spring and hold the air valve assembly in

x. Install breather assembly (35) into housing

the brake apply body, install the brake apply body and

cover (37).

its component parts on the housing cover assembly (fig.

7-63). Rotate the brake apply body, keeping the steel

strip positioned, in a counterclockwise direction so that

the ends of spring (73, FO-13) are indexed with the

Table 7-27. Repair Standards (Right, Left Brake Apply body Bevel Gear Housing Cover)

Wear limit

Reference

Size and fit

DS/GS

Foldout

Item

Point of measurement

of new parts

maintenance

46a

Free position of spring ends..................

123 apart

46a

Position under torque load

45 at 12.9 to 15.7

45 at 12.2 lb

in. lb

47a

Diameter at smaller end of shaft ...........

0.6245 to 0.6250

0.6243

47a

Diameter at center bearing surface of shaft 0.7495 to 0.7500

0.7493

*See footnote at the end of table.

7-61