C3/C4 Clutch Assembly and Main Housing Module Assembly

TM 9-2320-303-24-2

TRANSMISSION OVERHAUL - CONTINUED

0248 00

MODULE OVERHAUL - CONTINUED

C3/C4 Clutch Assembly and Main Housing Module Assembly

Install new seal rings (20 and 21) on piston (19). Install piston with seal rings into C4 housing (18).

Install spring retainer (22) on piston (19) and in C4 housing (18).

If removed, install new return spring assemblies (24) and attach them securely to piston return plate (23).

Install piston return plate (23) with return spring assemblies (24) into C4 clutch housing (18).

Install C4 clutch pack, starting with a friction plate (25). Alternately install five friction plates and five steel reaction

plates (26).

NOTE

Perform step 6 only if C3 clutch housing was disassembled. If clutch housing was not disassembled, proceed

to step 7.

Install four thrust plates (15) using 12 rivets (16) into C3 clutch housing (17). Use tool (J39534) to cold form rivets.

Insert rivet from front so that preformed head is below active surface of thrust plate. Use cold forming tool to upset rivet

at rear of clutch housing to complete riveted joint. A correctly formed rivet upset will be 0.157 in (4.00 mm) in diameter

and no more than 0.039 in (1.00 mm) above surface of clutch housing. Thrust plate must be tightly attached to housing;

no movement is allowed.

Install new seal rings (12 and 13) on piston (14). Install piston with seal rings into C3 clutch housing (17).

Install C3 clutch housing assembly (17) on top of assembled C4 clutch housing assembly (18). Ensure index notches on

clutch housings are aligned.

Install spring retainer (11) on piston (14) and in C3 clutch housing (17).

10.

If removed, install new return spring assemblies (9) and attach them securely to piston return plate (10).

11.

Install piston return plate (10) with return spring assemblies (9) into C3 clutch housing (17).

12.

Install P1 ring gear (6).

13.

Install C3 clutch pack: starting with a friction plate (7), alternately install five friction plates and four steel reaction

plates (8).

NOTE

Perform step number 14 only if C3 backplate was disassembled. If clutch housing was not disassembled,

proceed to step number 15.

14.

Install four thrust plates (4) using 12 rivets (3) into C3 backplate (2). Use tool (J39534) to cold form rivets. Insert rivet

from front so that preformed head is below active surface of thrust plate. Use cold forming tool to upset rivet at rear of

backplate to complete riveted joint. A correctly formed rivet upset will be 0.157 in (4.00 mm) in diameter and no more

than 0.039 in (1.00 mm) above surface of backplate. Thrust plate must be tightly attached to backplate; no movement is

allowed.

15.

Install C3 backplate assembly (2), aligning notches on C3 and C4 housings.

16.

Install 14 bolts (1) into C3/C4 clutch assembly (5). Tighten bolts to 38-45 ft-lb (51-61 Nm).

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