TM 9-2350-287-20-1 CHAPTER 7 ELECTRICAL SYSTEM/CIRCUIT MAINTENANCE Paragraph Page Number Paragraph Title Number 7-1 General ............................................................................................................................................7-3 7-2 Generator (Alternator) Replacement  ................................................................................................7-3 7-3 Voltage Regulator, Bilge Pump Relay, Starter Relay, Circuit Breaker, and Mounting Brackets Replacement  .....................................................................................................7-5 7-4 Rectifier Replacement  .....................................................................................................................7-12 7-5 Starter Motor Replacement ..............................................................................................................7-14 7-6 Driver's Portable Instrument Panel Repair ........................................................................................7-18 [Paragraph Deleted] 7-8 Low Coolant Indicator Light Assembly and Wiring Harness (12260297) Replacement ......................7-23 7-9 Driver's Instrument Panel Repair   .....................................................................................................7-24 7-10 Accessory Control Box Repair  .........................................................................................................7-28 7-11 Circuit Breaker Panels and Circuit Breaker Replacement  .................................................................7-36 7-12 Air Cleaner Blower Motor Relay Replacement   .................................................................................7-38 7-13 Intake Fuel Pump System Relay Replacement  ................................................................................7-40 7-14 Ventilation Blower Relay Replacement   ............................................................................................7-41 7-15 APU Voltage Regulator Replacement  ..............................................................................................7-42 7-16 Hydraulic Control Gage Panel Assembly Repair  ..............................................................................7-44 7-17 Conveyor Control Switch Replacement  ............................................................................................7-48 7-18 NBC Power Control Box Repair  .......................................................................................................7-50 7-19 STE/ICE Resistor Box Replacement  ................................................................................................7-59 7-20 Headlight Dimmer, Stoplight, and Parking Brake Light Switches Replacement and Adjustment  ...............................................................................................................................7-60 7-21 Master Relay Box Replacement .......................................................................................................7-65 7-22 APU Control Box Repair  ..................................................................................................................7-66 7-23 Upper Rear Door Control Switches and Bracket Replacement  .........................................................7-74 7-24 Conveyor Override Safety Switch Replacement  ...............................................................................7-76 7-25 Combat Override Switch Assembly Replacement  ............................................................................7-77 7-26 Intercom Power Supply Bracket Replacement  .................................................................................7-78 7-27 Intercom Terminals Replacement  ....................................................................................................7-79 7-28 Remote Chemical Detector Alarm Terminals Replacement  ..............................................................7-80 7-29 Stoplight Switch Replacement and Adjustment  ................................................................................7-81 7-30 Dome Light Repair ...........................................................................................................................7-83 7-31 Headlight Assembly Repair ..............................................................................................................7-87 7-32 Headlight Sealed-Beam and Incandescent Lamp Replacement  .......................................................7-92 7-33 Left Taillamp Assembly Repair  ........................................................................................................7-94 7-34 Right Taillamp Assembly Repair  ......................................................................................................7-97 7-35 Steering Shaft Master Warning Light Replacement ...........................................................................7-100 7-36 Engine Coolant Temperature Transmitter Replacement  ...................................................................7-102 7-37 Engine Coolant High Temperature Switch Replacement  ..................................................................7-104 7-38 Engine Oil Pressure Transmitter, Engine Oil Low Pressure Switch, and Air Cleaner Blower Motor Switch Replacement  .....................................................................................7-106 7-39 Transmission Oil Temperature Transmitter and Oil High Temperature Switch Replacement  ...................................................................................................................................7-108 7-40 Transmission Oil Pressure Transmitter and Oil Low Pressure Switch Replacement ..........................7-111 7-41 Battery Replacement  .......................................................................................................................7-113 7-42 Battery Ground and Interconnecting Cables (10897992, 10897993, and 12330348) Replacement  ...................................................................................................................................7-115 Change 1  7-1