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 439 of 1275

TM 9-2350-311 -20-1

CONTINUED FROM STEP R

T

1. Reconnect lead 76B to engine oil pressure

switch and lead 76 to left fuel pump.

2. Remove powerplant and install special

equipment (para 4-3).

3. Disconnect leads 76 and GND from right fuel

pump.

4. Disconnect engine disconnect bracket-to-

bulkhead wiring harness from engine

disconnect bracket.

5. Place a jumper wire from socket B (lead 76B)

to ground.

6. Place red lead of multimeter in lead 76 and

and black lead in lead GND.

7. Turn MASTER switch ON and check for

voltage.

8. Turn MASTER switch OFF.

Is voltage present?

I

I

-

Repair or replace lead 76 of bulkhead-

1

Replace right fuel pump (para 6-5).

I

3-339

to-headlights/bilge pump wiring

harness (para8-47).