CHAPTER 7 ELECTRICAL SYSTEM MAINTENANCE

TM 9-2320-360-20-2

CHAPTER 7

ELECTRICAL SYSTEM MAINTENANCE

Contents

Para

Page

Introduction ..........................................................................................................................................7-1

7-3

Alternator Test/Voltage Regulator Adjustment .........................................................................................7-2

7-3

12-Volt (Rear) Alternator/Bracket and Strap Replacement .......................................................................7-3

7-5

Deleted ................................................................................................................................................7-4

24-Volt (Front) Alternator/Bracket Replacement ......................................................................................7-5

7-14

12-Volt (Rear) Alternator Belt Adjustment/Replacement ...........................................................................7-6

7-18

24-Volt (Front) Alternator Belt Adjustment/Replacement .........................................................................7-7

7-20

24-Volt (Front) Alternator Strap Replacement .........................................................................................7-8

7-23

Starter Replacement ............................................................................................................................7-9

7-25

DDEC Coolant Level Sensor/Alarmstat/Temperature Sensor/DDEC Coolant Level

Module Replacement ...................................................................................................................7-10

7-31

Instrument Panel Harness Replacement ..............................................................................................7-11

7-36

Circuit Breaker Replacement ..............................................................................................................7-12

7-41

Instrument Panel Replacement ...........................................................................................................7-13

7-43

Tachograph Replacement ...................................................................................................................7-14

7-47

Tachograph Chart Replacement ..........................................................................................................7-15

7-49

Toggle Switch/Light Replacement .......................................................................................................7-16

7-51

Turn Signal Handle/Dimmer Switch Replacement ................................................................................7-17

7-53

Electric Gage Replacement ................................................................................................................7-18

7-55

Rheostat Switch Replacement .............................................................................................................7-19

7-57

Parking Brake Pressure Switch Replacement .......................................................................................7-20

7-59

Ether Start Switch Replacement ...........................................................................................................7-21

7-61

ENGINE (Ignition) Switch Replacement ................................................................................................7-22

7-63

Stoplight Switch Replacement ............................................................................................................7-23

7-67

Trailer Brake Stoplight Switch Replacement .........................................................................................7-24

7-70

Neutral Safety Switch Replacement .....................................................................................................7-25

7-72

Reverse Light Switch Replacement ......................................................................................................7-26

7-74

Relay Replacement ............................................................................................................................7-27

7-76

Electronic Throttle Replacement .........................................................................................................7-28

7-77

DDEC II Electronic Control Module (ECM) Replacement ......................................................................7-29

7-79

DDEC III Electronic Control Module (ECM) Replacement ................................................................... 7-29.1

7-88.1

Deleted ..............................................................................................................................................7-30

Transmission Temperature Sensor Replacement ..................................................................................7-31

7-89

Transfer Case Temperature Sensor Replacement ................................................................................7-32

7-91

DDEC Engine Fuel Temperature Sensor Replacement ..........................................................................7-33

7-93

DDEC Oil Temperature Sensor Replacement ......................................................................................7-34

7-95

DDEC III Oil Pressure Sensor Replacement ...................................................................................... 7-34.1

7-96.1

DDEC II Oil Pressure Sensor Replacement ..........................................................................................7-35

7-97

DDEC Turbo Boost Pressure Sensor Replacement ...............................................................................7-36

7-100

DDEC III Coolant Temperature Sensor Replacement ........................................................................ 7-36.1

7-102.1

Magnetic Switch Replacement .............................................................................................................7-37

7-103

Signal Flasher Replacement ...............................................................................................................7-38

7-112

Headlight Adjustment/Repair ..............................................................................................................7-39

7-114

Indicator Light Replacement ...............................................................................................................7-40

7-118

Front Fender Side Marker/Turn Signal Lights Replacement ..................................................................7-41

7-120

Side Marker Light Assembly Replacement ...........................................................................................7-42

7-122

Cab Front Clearance Light and Sun Visor Replacement .......................................................................7-43

7-124

Rear Marker Light and Mounting Bracket Replacement ........................................................................7-44

7-128

Dome Light Replacement ...................................................................................................................7-45

7-131

Change 3 7-1