TM-9-2350-274-BD

M109/M110/M578 VEHICLES HOWITZER, MEDIUM, SELF-PROPELLED FULL-TRACKED

TECHNICAL MANUAL; OPERATORS, ORGANIZATIONAL DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

JANUARY 1984

TM-9-2350-274-BD - Page 100 of 219

TM 9-2350-274-BD

ELECTRICAL SYSTEM

Procedural Steps (Cont):

3. Disconnect electrical connector (item 1) from relay.

4. Using jumper lead connect sockets A and C together. The jumper lead must be

wedged into the female sockets of connector to prevent them from vibrating out of the

sockets.

NOTE

If uninsulated material is used for jumper, wrap with electrical tape to prevent

electrical short.

5. Record the BDAR action taken. When mission is completed, as soon as practicable,

repair vehicle using standard maintenance procedures.

6-9. STARTER MOTOR, RELAY FAILURE

General Information

Starter motor will not engage due to starter motor relay failure. Insertion of jumper

lead will energize starter motor.

If non-insulated material is used for jumper, use an

insulating material to hold jumper lead. If engine is shut down this procedure must be

repeated. Two options below can be utilized to get the engine started.

Option 1:

Limitations:

●

Slow starting

6-8