Figure 7-47. Dimensions for installing screw thread inserts and insert staking pins.

TM 9-2520-249-34& P

into the hole of the retaining plate. Bend the remaining

outside diameter smaller than the outside diameter of

two tabs against the flat sides of the bolt head.

the insert. to install the inserts. The bolt should project

(11) Install three output clutch sleeve bolts

through the sleeve one inch for the 5/16-18 thread bolts

(57) and three flat washers (58).

and one and one-quarter inch for the 3/8-16 thread

b. Left Output Housing Assembly (FO-7).

bolts.

(1) If the brake and steer coolant pressure

retaining valve assembly, items (48 through 51), were

removed, install new replacement parts. Install valve

seat (51) first, flat side down, into housing (55), pressing

the seat until it is firmly seated in the housing. Install

pressure retaining valve (50), convex side first, into

housing (55). Install pressure retaining spring (49).

Install spring guide (48) through spring (49), valve (50)

and seat (51) into the housing. Press the spring guide

into the housing until the top of the head is 0.450 inch

below the surface adjacent to the valve bore in housing

(55).

(2) If roll pin (54) was removed, install a

Figure 7-47. Dimensions for installing screw thread

new replacement. Press the pin to bottom in the hole.

inserts and insert staking pins.

(3) If screw thread inserts (53 and 56) and

staking pins (52 and 57) were removed, install new

(4) If three output pump needle bearings

replacement parts. Install to the dimensions given in

(70, FO-8) were removed, install three new

figure 7-47. Use a bolt with same thread size as the

replacements. Press them flush with to 0. inch below,

inner thread of the insert, and a sleeve with an outside

the surface of housing (63).

diameter smaller than the outside diameter of the insert,

(5) If the brake and steer coolant pressure

to install the inserts. The bolt should project through the

retaining valve assembly, items (76 through 79), were

sleeve 1 inch for the 5/16 18 inch thread bolts and 1 1/4-

removed, install new replacement parts. Install valve

inch for the 3/816 thread bolts.

seat (76) first, flat side down, into housing (63), pressing

(4) If plugs (59, FO-7) were removed,

the seat until it is firmly seated in the housing. Install

install them.

pressure retaining valve (77), convex side first, in

(5) If two dowel pins (58) were removed,

housing (63). Install pressure retaining spring (78).

install new replacement parts. Press the pins to 0.300

Install spring guide (79) through spring (78), valve (77),

inch above the surface of housing (55).

and seat (76) into the housing. Press the spring guide

(6) If three plugs (60) were removed,

into the housing until the top of the head is 0.450 inch

install them.

below the surface adjacent to the valve bore in housing

(7) If reduction drive and driven gear

(63).

roller bearings (63 and 95) were removed, install new

(6) If plug (80) was removed, install it.

replacements. Chill the bearings in dry ice for 4 hours

(7) If roll pin (81) was removed, install a

and heat the housing to 3500 F before installation.

new replacement. Press the pin to bottom in the hole.

Make certain the bearings are fully seated when

(8) If the reduction drive and driven gear

installed.

roller bearings (21 and 36) were removed, install new

replacements. Chill the bearings in dry ice for 4 hours

NOTE

and heat the housing to 3500 F before installation.

The cutout on the bearing race must be

Make certain the bearings are fully seated when

indexed with the retaining plate location in

installed.

the housing.

NOTE

(8) Install output clutch sl eeve assembly

The cutout on the bearing race should be

(41, FO-7) with two sealrings (40). Retain the sealrings

indexed with the retaining plate location in the

with oil-soluble grease.

housing.

(9) Install retaining plate (94) with tab

lockwasher (93) and bolt (92). Make certain the tab of

(9) Install output clutch sleeve assembly

the washer that is bent at a right angle is inserted in the

(88, FO-8) with two sealrings (91). Retain the sealrings

hole in the retaining plate. Bend the remaining two tabs

with oil-soluble grease.

against the flat sides of the bolt head.

(10) Install retaining plate (56) with tab

(10) Install five output clutch sleeve bolts

lockwasher (55) and bolt (54). Make certain the tab of

(62) and five flat washers (61).

the lockwasher that is bent at a right angle is inserted

7-39