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 179 of 1275

TM9-2350-311-20-1

CONTINUED FROM STEP A

Check engine oil level. Level should be between

add and full marks (TM 9-2350-311-10).

I Is engine oil at proper level?

Bring engine oil to proper level with

Troubleshoot engine coolant temperature

indicator circuit.

Is engine coolant temperature indicator circuit

operating properly?

Repair or replace engine coolant

temperature indicator circuit

1. Remove radiator cap and start engine

(TM 9-2350-311-10).

2. Check radiator for contaminated coolant or

restricted water tubes (TM 9-2350-311-10).

Are there restrictions in the radiator or is coolant

contaminated?

Clean and flush cooling system

(para 7-6, M109A2/M109A4/

M109A5; 7-7, M109A3).

CONTINUED ON NEXT PAGE

3-79

proper grade of oil (para 2-15).

components as required.