TM-9-2320-285-24-1
TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1
TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1985
TM-9-2320-285-24-1 - Page 189 of 987
TM 9-2320-285-24-1
Section V.
ELECTRICAL SYSTEM MAINTENANCE
This section contains the information you need to maintain the:
•
Alternator
•
Starter
•
Instrument Panel
•
Light Systems
•
Sending Units
•
Horn
•
Batteries
It gives you instructions on how to troubleshoot problems and repair or replace the
components that are within the scope of organizational maintenance.
Para
Troubleshooting Symptom Index.
..............
2-16
Charging System Troubleshooting.
...........
2-17
Starting System Troubleshooting .
.............
2-18
Instrument Panel Trouble-
shooting.
.......................................
2-19
Light Systems Troubleshooting.
................
2-20
Sending Units Troubleshooting .
................
2-21
Horn System Troubleshooting.
..................
2-22
Battery System Troubleshooting .
..............
2-23
Alternator Maintenance .
............................
2-24
Starting System Maintenance.
...................
2-25
Solenoid and 70 AMP Circuit
Breaker.
................................
2-25a
Starter.
..........................................
2-25b
Instrument Panel Maintenance.
.................
2-26
Switches .
......................................
2-26a
Ignition Switch .
.....................
2-16a(1)
Quick Start Switch.
...............
2-26a(2)
Engine Stop Switch .
.............
2-26a(3)
Headlight Switch and 30
Ampere Circuit Breaker.
..
2-26a(4)
Dimmer Switch .
....................
2-26a(5)
Flood Light Switches .
...........
2-26a(6)
Trailer Light Switch.
..............
2-26a(7)
Blower Switch.
......................
2-26a(8)
24V INVERTER Switch .
.......
2-26a(9)
Turn Signal Flasher.
.............
2-26a(10)
Indicator Lights.
............................
2-26b
High Beam Indicator Light.
...
2-26b(1)
TRANS/TORQUE CONVERTER
Light.
................................
2-26b(2)
LOW FUEL INDICATOR Light
and Circuit Board.
............
2-26b(3)
Para
WATER LVEL, WATER TEMP,
OIL PRESSURE, and LOW AIR
Warning Lights and
24V INVTER Light.
................
2-26b(4)
Water Level Warning Bell and
Low Air Pressure Buzzer.
......
2-26c
Water Level Warning Bell .
....
2-26c(1)
Low Air Pressure Buzzer.
......
2-26c(2)
Gage Lights and Dash Lights.
.......
2-26d
Gage Lights.
..........................
2-26d(1)
Dash Lights.
..........................
2-26d(2)
Ammeter and 40A Circuit
Breaker .
................................
2-26e
Voltmeter.
......................................
2-26f
Instrument Panels .
........................
2-26g
Front Panel .
..........................
2-26g(1)
Right Corner Panel .
..............
2-26g(2)
Right Panel.
...........................
2-26g(3)
Turn Signal Control Maintenance.
..............
2-27
Engine Warning Kit Maintenance.
..............
2-28
Water Level Warning Kit Main-
tenance .
........................................
2-29
24V Inverter Maintenance.
.........................
2-30
Light Systems Maintenance.
......................
2-31
Headlights .
....................................
2-31a
Tail and Stop Lights .
.....................
2-31b
Cab Interior Light.
..........................
2-31c
Front Turn Indicator Lights.
...........
2-31d
Marker Lights .
...............................
2-31e
Trailer Lighting Cables .
.................
2-31f
Flood Lights.
..................................
2-31g
2-166
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