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 114 of 1275

TM 9-2350-311-20-1

3-3 TROUBLESHOOTING CHART — CONTINUED

a. BATTERY CIRCUIT — CONTINUED

CONTINUED FROM STEP A

If voltage is 18 Vdc or above, replace

starter motor (para 8-14).

1. Turn MASTER switch ON.

2. Place red lead of multimeter on positive

post and black lead on negative post of

battery (1).

3. Crank engine and check voltage.

4. Voltage reading should not be below 9

Vdc.

5. Repeat on remaining batteries (2 ,3, and 4).

Is voltage 9 Vdc or below?

If voltage is 9 Vdc or below for any

battery, check battery specific

gravity and replace if necessary

(para 8-28).

If voltage is 9 Vdc or above for any

battery and problem recurs, batteries

should be checked individually and

replaced as required (para 8-28).

ENGINE CRANKS SLOWLY — CONTINUED

END OF TASK

3-14