TRANSMISSION REPAIR AND ASSEMBLY.

TM 10-3930-623-34

6. Press two straight drive pins (13) into clutch

6-52. TRANSMISSION REPAIR AND ASSEMBLY.

pressure plate (19).

6-53. CONTROL VALVE ASSEMBLY.

NOTE

1. Clamp valve body (30, figure 4-16) in a soft jaw

vise with bore ends up.

Ends of pin should be 0.41 below

edge of pressure plate.

2. Carefully assemble pressure regulator pistons

(19 and 21), and springs (18 and 20), retainer screws

7. Assemble forward clutch plate (17) and clutch

(16), and gaskets (17).

piston (11) into clutch pressure plate (19).

3. Assemble inching valve piston (28) and spring

NOTE

(29) to body. Insert stop (27). Assemble inching control

Forward clutch cylinder and mating

springs (25 and 26) and inching spring piston (23).

side of clutch pressure plate are

Insert stop (22). Press seal (24) into body.

marked with one identification mark

and the rear parts with two lines.

4. Assemble direction control plunger (14) in valve

Lines are etched during manufacture

body. Insert stop (13). Press seal (15) into body.

after assembled clutch has been

balanced. Therefore, the lines must

5. Assemble direction control plunger detent ball

match during assembly to maintain

(11), spring (10) and sleeve (12).

balance.

6. Assemble bedplate (6) and lower bedplate (2) to

8. Install forward retaining ring (1), lock plate (3)

the valve body with gaskets (5 and 9), screws (3 and 7)

and screw (2).

and lock washers (4 and 8).

9. Assemble clutch piston return springs (16) in

clutch plate.

6-54.

CONTROL VALVE INSTALLATION.

Refer to TM 10-3930-623-12.

10. Assemble rear clutch plate (18), hub forward,

and rear clutch cylinder (15) to the pressure plate. See

note in step 7.

6-55. FORWARD

AND

REVERSE

CLUTCH

REPAIRS.

The repair of the clutch assembly consists of replacing

11. Install rear retaining ring (1), lock plate (3) and

the clutch drive plate or replacement of bearings.

screw (2).

6-57. TRANSMISSION REPAIRS . The repair of the

CAUTION

transmission is limited to replacement of bearings or

gears where required.

When parts other than the clutch

plates or bearings are replaced, the

assembled clutch should be checked

6-58. TRANSMISSION ASSEMBLY.

for 0.25 oz inch balance maximum.

NOTE

6-56.

FORWARD

AND

REVERSE

CLUTCH

Lubricate all bearings, gears and

ASSEMBLY.

packings with Type A automatic

transmission fluid during assembly.

1. Assemble forward clutch cylinder (11, figure

4-15) to input shaft (7) with screws (8) and washers (9).

1. Install pick-up strainer (9, figure 4-14) in rear half

of transmission case (85).

2. Press forward gear shaft spigot needle bearing

(10) into input shaft.

2. Press bearing cups (55 and 70) into case.

Press bearing cone and roller (69) onto output bevel

3. Press rear gear shaft needle bearing (6) into

pinion shaft (66). Assemble retaining ring (67) to shaft.

rear clutch cylinder (4). Press bearing into bore, 3/32

inch below the smaller end. Check oil passage plug (5)

3. Assemble spur gear (68) and gear spacer (57)

for tightness. If loose, stake in place.

on output shaft.

4. Assemble sealing rings (12) to both forward and

4. Assemble required spacers (56) and bearing

rear clutch cylinders (4 and 11).

cone and roller (54) to shaft.

5. Assemble sealing ring (14) into groove of each

5. Assemble required number of shims (53) and

clutch piston

bearing keeper (51) to output shaft.

6-13