TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 2 Download
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TM 9-2320-387-24-2 28-10. DIRECT CLUTCH ASSEMBLY REPAIR (Cont’d) CAUTION All transmission parts must be lubricated with clean transmission fluid (Dexron® III) before assembly. Foreign material will cause transmission damage. NOTE • For general assembly instructions, refer to para 2-17. • Perform step 1 for 1995-1996 models only. 1. With piston (2) facing up, install inner seal (3) and outer seal (4), lip side down, and center seal (5), lip side up, into clutch housing (6). 2. Position seal protectors J 38732-1 and J 21362 on direct clutch housing (6). NOTE Perform step 2.1 for 1995-1996 transmissions only. 2.1. Install piston (2). Use twisting motion on piston (2) until seated. 3. Using spring compressor and adapter, install spring and retainer assembly (1) on piston (2) with snapring (7). 4. Install sprag assembly (11) over rear hub of direct clutch housing (6). 5. Install outer race (10), groove side up, and clutch retainer (9) over sprag assembly (11) with snapring (8). 6. Check sprag assembly (11) to ensure it only turns clockwise and locks on housing (6) when turned counterclockwise. NOTE Perform step 7 for 1995-1996 transmissions only. 7. Install dished plate (15), cupped surface toward piston (2), on direct clutch housing (6). 8. Install five clutch plates (16) and clutch plate assemblies (14) on clutch housing (6). Alternate plates, starting with a clutch plate (16). 9. Install backing plate (13) on housing (6) with snapring (12). 1. Set direct clutch assembly (17) on center support (18). 2. Set dial indicator to seat on direct clutch assembly (17). WARNING Air pressure must not exceed 80 psi (552 kPa) when air-checking clutch position. NOTE Air applied to reverse passage will vent out normally. 3. Apply 80 psi (552 kPa) of air pressure to direct clutch fluid passage (20) in center support (18) only. Do not apply air pressure to reverse passage (19); air will vent out normally. 4. Piston should move to compress clutch plates. Travel should be 0.121-0.186 in. (3.07-4.72 mm). 5. If correct measurement is read, remove direct clutch assembly (17) from center support (18). 6. If incorrect measurement is read, check clutch plates (16) and (14) for proper installation. Replace all clutch plates if damaged. e. Direct Clutch Piston Movement Measurement d. Assembly 28-40 Change 1