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 180 of 1275

TM9-2350-311-20-1

3-3 TROUBLESHOOTING CHART — CONTINUED

e. ENGINE—CONTINUED

CONTINUED FROM STEP D

E

Check radiator water for air bubbles

(TM 9-2350-311-10).

Are there air bubbles in radiator?

Notify support maintenance.

Check cooling fans for proper operation

(TM 9-2350-311-10).

I

I Are fans operating properly?

Notify support maintenance.

Check grilles, radiator, and radiator fins for dirt,

restrictions, or clogged air passages

(TM 9-2350-311-10).

I

Are there any restrictions or clogged air passages?

I

Clean grills and radiator passages

and radiator fins (Chap 2, Sect IV).

(8) ENGINE OVERHEATS – CONTINUED

CONTINUED ON NEXT PAGE

3-80