TM 9-2350-277-20-5REPLACE M3 NBC HEATERS AND CONTROLLERS (M113A3AMBULANCES ONLY)0795 00THIS WORK PACKAGE COVERS:Removal (page 0795 00-1).Installation (page 0795 00-4).INITIAL SETUP:Maintenance LevelUnitTools and Special ToolsGeneral Mechanic’s Tool Kit (WP 0926 00, Item 65)Materials/PartsLocknut (20)Lockwasher (8)Tie straps (as required)Personnel RequiredUnit MechanicReferencesSee your -10TM 3-6680-316-10Equipment ConditionEngine stopped (see your -10)Carrier blocked (see your -10)Battery ground strap disconnected (WP 0337 00)REMOVAL1. Disconnect circuit lead 537A (1) and circuit lead 537B (2) from upper and lower heaters (3) and (4) on right sideof vehicle.2. Loosen clamps (5) and (6). Remove upper and lower outlet hoses (7) and (8) from upper and lower heater (3) and (4).3. Loosen clamps (9) and (10). Remove upper and lower inlet hoses (11) and (12) from upper and lower heaters (3) and (4).4. Remove eight screws (13), 16 washers (14), eight locknuts (15), upper and lower heater (3) and (4) from bracket (16).Discard locknuts.0795 00-1
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