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 226 of 1275

TM 9-2350-311-20-1

3-3 TROUBLESHOOTING CHART — CONTINUED

i.

GLOW PLUGS CIRCUIT (ENGINE MODEL 7083-

(1) GLOW PLUG WAIT LIGHT FAILS TO OPERATE;

7391 ) — CONTINUED

GLOW PLUG SYSTEM OPERATES USING MANUAL

OVERRIDE — CONTINUED

Repair or replace lead 486 of engine disconnect-

to-bulkhead wiring harness (para 8-45, M109A2/

M109A3; para 8-46, M109A4/M109A5).

Repair or replace lead 486 of

bulkhead-to-portable instrument

wiring harness (para 8-49).

3-126

Replace glow plug wait

light lead (para 8-77).