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 606 of 1275
TM9-2350-311-20-1
CHAPTER 7
COOLING SYSTEM
GENERAL
This chapter provides instructions for maintenance, removal, installation, and cleaning of engine cooling system
components.
CONTENTS
PAGE
7-1
ENGINE COOLING SYSTEM (M109A2/M109A4/M109A5) (PICTORIAL) . . . . . . . . . . . . . . . . . . . . . .
. 7-2
7-2
ENGINE COOLING SYSTEM (M109A3) (PICTORIAL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 7-4
7-3
MAIN ENGINE COOLANT TUBES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 7-6
7-4
LOWER ENGINE COOLANT TUBES.
.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 7-8
7-5
SURGE TANK AND PRESSURE RELIEF VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 7-10
7-6
RADIATOR AND SHROUD (M109A2/M109A4/M109A5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 7-13
7-7
RADIATOR AND SHROUD (M109A3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 7-22
7-8
INLET THERMOSTATS AND HOUSING ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 7-32
7-9
BYPASS THERMOSTAT AND HOUSING ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 7-36
7-1
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