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 178 of 1275

TM9-2350-311-20-1

3-3 TROUBLESHOOTING CHART — CONTINUED

e. ENGINE — CONTINUED

(8) ENGINE OVERHEATS

I INITIAL SETUP I

General mechanic’s tool kit (item 64, Appx H)

Muitimeter (item 36, Appx H)

TA-1 probe kit (item 43, Appx H)

References

TM 9-2350-311-10

WARNING

When engine is hot, remove radiator cap slowly to

relieve pressure. Failure to follow this procedure may

result in severe injury.

WARNING

To avoid bums, ensure engine and coolant have cooled

before removing components. Failure to comply may

result in severe injury.

WARNING

A protective fan screen must be installed prior to doing

maintenance in the engine compartment while the

engine is running or is in ground hop mode. Contact with

rotating fan can cause severe injury.

Check coolant in radiator for proper level

(TM 9-2350-311-10).

I

Is coolant at proper level?

I

Bring coolant in radiator to proper

I

level (TM 9-2350-311-10).

Equipment Conditions

Engine compartment access door open

(TM 9-2350-311-10)

Transmission access doors open (TM 9-2350-311-10)

CONTINUED ON NEXT PAGE

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Tools