CHAPTER 6: MAINTENANCE OF ELECTRICAL SYSTEMS AND CIRCUITS TM 9-2350-256-206-12 REPLACE HEATER CONTROL BOXTHIS TASK COVERSa. Removalb. InstallationINITIAL SET-UPTools:Parts:Tool kit, general mechanic's (Appendix C,Lockwashers (2) (Appendix G, item 116)item 53)WARNINGBe certain MASTER switch is OFF when working on electrical system to avoid electrical shock and bums.a. REMOVAL1 Disconnect wiring harness (1) from heater control box (2).2 Disconnect lead (3).3 Remove two screws (4) from heater control boxfront panel (5).4 Slide heater control box front panel (5) forward outof heater control box (2).5 Remove heater control box (2) by removing twoscrews (6), two lockwashers (7), and two nuts (8).b. INSTALLATION1 Install heater control box (2) using two screws (6),two new lockwashers (7), and two nuts (8).2 Slide heater control box front panel (5) into positionon heater control box (2) and install two screws (4).3 Connect lead (3).4 Connect wiring harness (1) to heater control box (2).6-42
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