TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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TM 9-2320-280-34 17-11. REAR SERVO REPAIR (3L80) This task covers: a. Disassembly c. Inspection b. Cleaning d. Assembly INITIAL SETUP: Applicable Models Manual References All vehicles except: M997A2, M1025A2, TM 9-2320-280-24P M1035A2, M1043A2, M1045A2, M1097A2 Equipment Condition Tools Transmission disassembled into subassemblies General mechanic's tool kit: (para. 17-3). automotive (Appendix G, Item 1) Maintenance Level General support NOTE Work area should be well ventilated, clean, and free from blowing dirt and dust. a. Disassembly 1. Remove rear accumulator piston (6) from rear servo piston (9). CAUTION Band apply pin is spring loaded. 2. Remove E-ring (10) from band apply pin (1) and remove band apply pin (1), washer (4), spring (3), and spring retainer (2) from rear servo piston (9). b. Cleaning Clean all gear unit components in accordance with para. 2-13. c Inspection NOTE • For general inspection instructions, refer to para. 2-14. • Do not remove oil seal rings from accumulator piston or servo piston unless oil seals require replacement. 1. I nspect accumulator piston oil seal rings (7) and (5) for damage. Replace rings (7) or (5) if damaged. 2. Inspect servo piston oil seal (8) for nicks, cuts, or damage. Replace seal (8) if nicked, cut, or damaged. 3. Inspect accumulator piston (6) and servo piston (9) for damage. Replace either if damaged. 4. Inspect band apply pin (1) for scoring or damage. Replace pin (1) if scored or otherwise damaged. d. Assembly NOTE For general assembly instructions, refer to para. 2-16. 1. Install spring retainer (2), spring (3), and washer (4) on band apply pin (1). 2. Install band apply pin (1) into rear servo piston (9) and secure with E-ring (10). 3. Install accumulator piston (6) into rear servo piston (9). 17-42