TM 9-2350-277-20-5REPLACE NBC CABLE TO HEATERS, AIR PURIFIER, AND SWITCHASSEMBLY (M113A3 ONLY)0800 00THIS WORK PACKAGE COVERS:Removal (page 0800 00-1).Installation (page 0800 00-3).INITIAL SETUP:Maintenance LevelUnitTools and Special ToolsGeneral Mechanic’s Tool Kit (WP 0926 00, Item 65)Materials/PartsStraps (3)Personnel RequiredUnit MechanicReferencesSee your -10Equipment ConditionEngine stopped (see your -10)Carrier blocked (see your -10)Battery ground strap disconnected (WP 0337 00)Drop instrument panel. See Replace Panel Mounts andGround Leads (WP 0295 00).REMOVAL1. Disconnect cable (1) from air purifier (2).2. Loosen two screws (3) and remove cover (4) from switch assembly (5) and transverse beam.3. If circuit breaker switch assembly needs to be replaced, see Replace NBC Filter Switch (WP 0802 00).4. Remove circuit 579C (6) from jack (7) on air filter switch (8).5. Remove circuit 537C (9) from jack (10) on air filter on lamp (11).6. Remove all tie straps (12) securing cable (1) to other wiring harnesses. Discard straps.7. Remove circuit 579A lead (13) from connector (14) on back of instrument panel.8. Remove circuit 537B lead (15) from driver’s heater controller lead (16).9. Remove circuit 537A lead (17) from commander’s heater controller lead (18).10. Remove circuit 10A lead (19) from connector (20) and circuit breaker (21).11. Remove circuit 10 lead (22) from connector (14).WARNINGRemoving cables from the regulator without disconnecting the vehicle battery ground cablemay hurt personnel and damage equipment from electrical power.NOTEDo Step 12 to gain better access to remove NBC cable ground lead.12. Remove four screws (23), lockwashers (24) and regulator (25) from bracket (26).0800 00-1
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