TM-9-2350-261-20-4 Unit Maintenance Manual Volume 4 M113A2 M577A2 M1064 M1068 M1059 M901A1 Download
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TM 9-2350-261-20-4 REPLACE M3 NBC HEATERS AND CONTROLLERS (M113A2 AMBULANCES ONLY) — Continued 0687 00 6. Disconnect circuit lead 537C (1) and circuit lead 537D (2) from forward and rear heaters (3) and (4) on left side of carrier . 7. Loosen clamps (5). Remove forward and rear outlet hoses (6) and (7) from forward and rear heaters (3) and (4). 8. Loosen clamps (8). Remove forward and rear inlet hoses (9) and (10) from forward and rear heaters (3) and (4). 9. Remove eight screws (11), 16 washers (12), eight locknuts (13), and upper heater (3) and lower heater (4) from two brackets (14). Discard locknuts. 10. If damaged, remove four screws (15), lockwashers (16), and brackets (14) from bulkhead. Discard lockwashers. 11. Disconnect circuit lead 537G (17) from driver’s controller (18). 12. Disconnect two leads (19) from driver’s controller (18) and driver’s heater (20). 13. Remove four screws (21), eight washers (22), four locknuts (23), and driver’s controller (18) from bracket (24). Discard locknuts. 14. If damaged, remove two screws (25), lockwashers (26), and bracket (24) from bulkhead. Discard lockwashers. 15. Cut tie straps (27) and remove two leads (19) from adjacent driver’s outlet hose (28). Discard tie straps. 16. Loosen clamps (29). Remove driver’s outlet hose (28) and driver’s inlet hose (30) from driver’s heater (20). 17. Remove four screws (31), eight washers (32), four locknuts (33), and driver’s heater (20) from welded mount (34). Discard locknuts. 0687 00-2