Mainshaft.

TM 9-2520-246-34

e. Input Shaft.

(1) Place the input shaft ball bearing on the input

shaft. Place the input shaft between two parallel

blocks. spline downward. Using an arbor press, press

the input shaft ball bearing onto the shaft. Secure

bearing to input shaft using a new snapring. See fig.

3-33 for positioning of bearing and snapring.

NOTE

Coat the input shaft and ball bearing bore

with white lead pigment, Fed Spec TT-W-

261C, before pressing the ball bearing

Figure 3-45. Removal of First and Reverse

assembly on the shaft.

Shifter Shaft Oil Seal

(2) Coat the input shaft roller bearing bore with

c. Mainshaft.

a light coating of grease. artillery and automotive

(GAA), MIL-G-10924. Install the input shaft roller

bearings. Insert the last roller bearing end wise into the

CAUTION

bearing assembly. (See para 3-9 note.)

Do not press directly on the flange of the

sleeve. Use a short piece of pipe or tubing

3-11. Assembly.

and press on end of sleeve. Direct pressure

on the flange of the sleeve may damage it.

a. Install countershaft front bearing and washer.

(See fig. 3-32.)

(1) Slide the second speed gear on the mainshaft.

b. Install new countershaft front bearing retainer

Coat the second- and third-speed synchronizer sleeve

(See fig. 3-32.)

bore and mainshaft with a light coating of grease,

artillery and automotive (GAA), MIL-L-10924. Start

c. Install countershaft assembly. (See fig. 3-31.)

the sleeve on the mainshaft. Place into the press, face

down. between two parallel bars. Press sleeve into

d. Install countershaft rear bearing (fig. 3-30) and

position and secure it using a new snapring. See figure

snapring.

3-37 for positioning of the second- and third-speed

synchronizer.

e. Install countershaft rear bearing retaining nut.

Tighten nut to 120-150 lb-ft torque. Secure nut to

(2) Coat the fourth-speed gear sleeve and

mainshaft using a new cotter pin (fig, 3-30).

mainshaft with white lead. Fed Spec TT-W-261C.

Make an opening in the adapter puller large enough

NOTE

to slip through. Position the third-speed gear and

fourth-speed gear sleeve to main drive shaft and press

After applying torque. tighten nut to

into place. See figure 3-35 for the correct positioning

closest cotter pin hole.

of third-speed gear and fourth-speed gear sleeve.

(3) Install mainshaft fourth-speed gear and thrust

washer. Secure in place using a new snapring.

NOTE

Be sure snapring is fully seated in the

mainshaft groove.

d. Mainshaft Rear Bearing Cap.

(1) Press seal into place using a block of wood

and a press.

Figure 3-46. Removal of Lower Shift Lever.

Lever Spring, and Spring Cap

(2) See fig. 3-22 for positioning of seal.

3-19