TM 9-2320-361-34 15-39. HORIZONTAL LEVELING WORM GEAR MAINTENANCE THIS TASK COVERS: a. Removal d. Assembly b. Disassembly e. Installation c. Inspection INITIAL SETUP APPLICABLE MODELS M764 TOOLS General mechanic’s tool kit (Appendix B, Item 1) Outside micrometer (Appendix B, Item 17) Inside micrometer (Appendix B, Item 16) MATERIALS/PARTS Four cotter pins (Appendix F, Item 10) Shim set (Appendix F, Item 249) Shim set (Appendix F, Item 250) Shim set (Appendix F, Item 251) Four lockwashers (Appendix F, Item 138) Two lockwashers (Apendix F, Item 127) Woodruff key (Appendix F, Item 297) Woodruff key (Appendix F, Item 274) Safety wire (Appendix C, Item 31) a. Removal 1. 2. 3. 4. 5. 6. 7. 8. 9. PERSONNEL REQUIRED Two REFERENCES [TM] LO 9-2320-209-12-1 TM 9-237 TM 9-2320-361-10 TM 9-2320-361-20 TM 9-2320-361-34P EQUIPMENT CONDITION ● Parking brake set (TM 9-2320-361-10). ● Horizontal leveling worm drivechain removed (TM 9-2320-361-20). GENERAL SAFETY INSTRUCTIONS Before removing horizontal leveling worm gear housing, support intermediate case to prevent from turning. WARNING Before removing horizontal leveling worm gear housing, place supports under intermediate case to prevent case from turning. If intermediate case turns, injury to personnel and/or damage to equipment may result. NOTE Assistant will help with entire procedure. Place handle (5) in center slot of bracket (6). Remove cotter pin (1), nut (2), washer (3), handle (5), and spring (4) from rod (7). Discard cotter pin (1). Remove two cotter pins (8), clevis pins (10), and retaining links (9) from rod (7) and power leveler housing (12). Discard cotter pins (8). Remove cotter pin (14), clevis pin (11), and rod (7) from shifter shaft (13). Discard cotter pin (14). Loosen screw (20) and remove sprocket (15) from bracket (18). Remove two screws (31) and lockwashers (30) from power leveler housing (12). Discard lock- washers (30). Remove two screws (16), Iockwashers (17), bracket (18), and shims (19) from worm gear housing (21). Record thickness of shims (19). Discard shims (19) and lockwashers (17). Remove vent plug (28) from intermediate case (29). Remove safety wire (27), two screws (26), bracket (6), and shims (25) from worm gear housing (21). Record thickness of shims (25). Discard shims (25) and safety wire (27). Remove two safety wires (24), four nuts (22), worm gear housing (21), and shims (23) from intermediate case (29). Record thickness of shims (23). Discard shims (23) and safety wire (24). 15-146