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 173 of 343
TM 9-2350-358-BD
7-11.
SWITCH, NEUTRAL, SAFETY - CONTINUED
2.
Set MASTER power switch to OFF.
3.
In wiring harness W114, locate two wires number 14.
4.
Remove two wires number 14 from neutral safety switch and connect, using electrical wire or jumper.
5.
Insulate and secure electrical wire or jumper using insulation electrical tape.
6.
Set MASTER power switch to ON.
7.
Record BDAR action taken.
When mission is complete, as soon as practical, repair the equipment/system using
standard maintenance procedures.
7-12.
RELAY, MASTER
General Information:
The master relay supplies electrical energy to all major electrical systems in the M109A6.
With full electrical load applied,
the master relay is capable of carrying upwards to 1000 amps of electrical current.
Limitations:
With master relay bypassed, it is impossible to disconnect the electric power without breaking the bypass.
Personnel/Time Required:
•
2 soldiers
•
0.5 hour
Materials/Tools:
Tape, insulation electrical (item 63, Appendix C)
7-13
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