TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 153 of 1275

CONTINUED FROM STEP A

I

#

B

1. Place red lead of multimeter in GND lead

connector of override switch and black lead

to ground.

2. Check for continuity.

I

Is continuity present?

I

Replace combat override switch

ground lead (para 8-89).

c

1. With MASTER switch ON and fuel shutoff

handle pulled out, crank starter until it

automatically shuts off.

2. Turn MASTER switch OFF.

3. Disconnect bulkhead-to-override switch

lead assembly from driver’s bulkhead.

4. Place a jumper wire on lead 14C and other

end to ground.

5. Turn MASTER switch ON, push STARTER

switch and check for voltage.

I

6. Turn MASTER switch OFF.

I

Is voltage present?

1

Repair or replace lead 14C of bulkhead-

to-override switch lead assembly (para

8-88).

CONTINUED ON NEXT PAGE

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TM9-2350-311-20-1