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 304 of 1275

TM 9-2350-311-20-1

3-3 TROUBLESHOOTING CHART —

CONTINUED

p, TRANSMISSION OIL TEMPERATURE INDICATOR TRANSMISSION OIL TEMP INDICATOR NEEDLE FAILS

CIRCUIT — CONTINUED

TO MOVE OR IS UNSTEADY; ALL OTHER GAGES

OPERATE PROPERLY — CONTINUED

D

CONTINUED FROM STEP C

1. Reconnect lead 27 to TRANSMISSION OIL

2.

3.

4.

5.

6.

7.

8.

TEMP gage.

Disconnect battery ground leads.

Disconnect portable instrument panel wiring

harness from portable instrument panel

disconnect.

Place a jumper wire from socket P (lead

459B) to socket C (lead 459).

Place red lead of multimeters in socket A (lead

27) and black lead to ground.

Reconnect battery ground leads.

Turn MASTER switch ON and check for

voltage.

Turn MASTER switch OFF.

Is voltage present?

Repair or replace lead 27 of portable

instrument panel wiring harness from

TRANSMISSION OIL TEMP gage (para

8-57).

CONTINUED ON NEXT PAGE

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