Table 14-1. Transmission Spring Inspection

TM 10-3930-632-34

Slide gear and bushing (10) on the shaft, and discs (14

WARNING

and 15) onto the gear assembly. Place thrust washer (5)

on the shaft.

Dry cleaning solvent, P-D-680, used to clean

Install seal (18) on the hub of the hub and

parts is potentially dangerous to personnel and

drum. Install seal (19) on piston (17). Install the piston

property. Avoid repeated and prolonged skin

in the hub and drum.

contact.

Do not use near open flame or

excessive heat. Flash point of solvent is 100 F.

Install discs (14 and 15) and springs (16) in the

- 138 F. (39 C. - 59 C.).

hub and drum, making sure that the first disc inserted

has splines which engage the hub and drum and the

second disc has splines which engage the gear

14-9.

Cleaning and Inspection

assembly. Alternate discs until all eight are installed.

Discard the seals and preformed packings.

Figure 14-8 shows clutch assembly. Install end plate

Clean the bearings by placing them in a wire

(13, figs. 14-3 and 14-4) in the hub and drum and

basket and immersing them in a container of solvent.

secure the assembly with retaining ring (12).

Agitate the basket in the solvent to thoroughly clean the

bearings. Dry with clean, dry, compressed air, taking

care not to spin the bearings. Lubricate with light oil after

cleaning.

Clean all other parts of the transmission

assembly in cleaning solvent P-D-680 and dry with

compressed air.

Lubricate all metal parts of the assembly with

transmission fluid.

Inspect all bearings for cracks, nicks, wear,

scoring, overheating, or other damage; replace damaged

bearings.

Inspect the gears for chips, cracks, breaks,

worn teeth, worn splines, or other damage; replace

damaged gears.

Inspect the case, housing, and all covers for

cracks, breaks, distortion, nicked seal seats, or other

damage; replace parts if damage makes them

unserviceable.

Inspect discs for cracks, wear, overheating, or

other damage; replace the complete disc assembly if any

are defective.

Inspect all springs for wear. Check tension of

the springs.

Replace if the springs do not meet

requirements as shown in table 14-1.

Figure 14-8. Assembling Forward and Reverse Clutches

14-10.

Reassembly

Reassemble the control valve by referring to

figures 14-6 and 14-7, and procedural step s (1) thru (9),

paragraph 14-8, and reversing order of disassembly.

Place spacer (9, figs. 14-3 and 14-4) and

bearing (8) on shaft (11); secure with retaining ring (7).

Table 14-1. Transmission Spring Inspection

Name

Fig.

Index

Compressed

Pounds load

No.

Length

Pressure regulator

14-5

2 1/2

21-24

spring

Relief valve spring

14-5

0.763

5 1/2-7 1/2

Clutch spring

14-4

Align the discs that engage the gear assembly

Assemble the second clutch assembly as

and install the clutch assembly on the assembled shaft

directed in a through e above.

Press the bearings (2) into the housing (36, fig.

(11) and gear (10). Install the gear or spacer (4) on the

shaft and secure with the retaining ring (3).

14-2) so that the retaining ring on the bearing

14-11