TM-9-2350-358-BD
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A6
TECHNICAL MANUAL; OPERATOR’S, UNIT, AND DIRECT SUPPORT SUPPORT MAINTENANCE
MARCH 1994
TM-9-2350-358-BD - Page 161 of 343
TM 9-2350-358-BD
CHAPTER 7
ELECTRICAL SYSTEM
BDAR FIXES SHALL BE USED ONLY IN COMBAT OR FOR TRAINING
AT THE DISCRETION OF THE COMMANDER.
(AUTHORIZED TRAINING FIXES ARE LISTED IN APPENDIX E.)
IN EITHER CASE, DAMAGES SHALL BE REPAIRED BY STANDARD
MAINTENANCE PROCEDURES AS SOON AS PRACTICABLE.
SECTION I. INTRODUCTION
7-1.
SCOPE
The electrical system can be made functional by performing the repair procedures in this manual after standard
troubleshooting procedures have isolated a failed electrical component.
If proper test equipment is not available for
troubleshooting, fabricated test equipment listed in Appendix B may be used.
Proper BDAR procedures can be found by
using the fault assessment tables in the repair procedure index (para 7-3).
7-2.
ASSESSMENT PROCEDURE
Table 7-1.
Electrical System Visual Assessment
VISUALLY INSPECT
DAMAGE FOUND TO:
Motor, starter.
.....................................
para 7-5
Batteries
..........................................
Chapter 3
Brush, electrical, motor/generator,
worn.
..................................................
para 7-7
Cables.
...............................................
Chapter 3
Wiring.
................................................
Chapter 3
Circuit breakers.
.................................
Chapter 3
Switch, relay, oil pressure activated,
air cleaner and generator system.
......
para 7-9
Switch, master.
...................................
para 7-10
Switch, neutral, safety.
.......................
para 7-11
Relay, master.
....................................
para 7-12
Relay, starter protection.
....................
para 7-13
Relay, generator/fuel pumps.
.............
para 7-14
Relay, hydraulic pump motor .
............
para 7-15
Overload-sensor, hydraulic
pump motor.
.......................................
para 7-16
7-1
Back to Top
