TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 2 Download
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28-9. CENTER SUPPORT REPAIR This task covers: a. Disassembly c. Inspection b. Cleaning d. Assembly NOTE Work area should be well-ventilated, clean, and free from blowing dirt and dust. 1. Remove four oil seal rings (1) from center support (2). Discard oil seal rings (1). 2. Using adapter and clutch spring compressor J 23327, compress spring and retainer (10) and remove snapring (11) from center support (2). 3. Remove spring and retainer (10), releasing springs (9), and remove clutch piston (6) from center support (2). 4. Remove inner piston seal (7) and outer piston seal (8) from clutch piston (6). Discard piston seals (7) and (8). NOTE Perform step 5 for 1997-1998 transmissions only. 5. Remove oil cooler fitting seal (8.1) from center support (2). Clean all center support components in accordance with para. 2-14. NOTE For general inspection instructions, refer to para. 2-15. 1. Inspect roller clutch inner race (3) for damage. Replace center support (2) if damaged. 2. Inspect oil ring grooves (4) in center support (2) for roughness or damage. Replace center support (2) if damaged. 3. Inspect center support (2) for damage. Replace if damaged. c. Inspection b. Cleaning a. Disassembly INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Maintenance and repair shop equipment: automotive (Appendix B, Item 2) Special Tools Driver handle (Appendix B, Item 60) Bushing service set (Appendix B, Item 76) Adapter (Appendix B, Item 67) Clutch compressor spring adapter (Appendix B, Item 69) Center support thread reamer (Appendix B, Item 73.1) Materials/Parts Inner piston seal (Appendix G, Item 304) Outer piston seal (Appendix G, Item 307) Materials/Parts (Cont’d) Four oil seal rings (Appendix G, Item 415) Transmission fluid (Appendix C, Item 37) Manual References TM 9-2320-387-24P Equipment Condition Transmission disassembled into subassemblies (para. 28-3). General Safety Instructions Air pressure must not exceed 15 psi (103 kPa) when air-checking clutch piston. Maintenance Level General support TM 9-2320-387-24-2 28-32 Change 1