TM-9-2350-358-BD

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A6

TECHNICAL MANUAL; OPERATOR’S, UNIT, AND DIRECT SUPPORT SUPPORT MAINTENANCE

MARCH 1994

TM-9-2350-358-BD - Page 141 of 343

TM 9-2350-358-BD

SECTION II.

COOLING SYSTEM

6-4.

GENERAL

The howitzer has a liquid cooling system consisting of a radiator, two fans, tubes, hoses, fittings, clamps, a surge tank and

an engine-driven water pump.

To maintain normal operating temperature of the engine, the liquid flow through the cooling

system is controlled by an inlet and a bypass thermostat.

Battle damage to the cooling system would degrade, and if not

repaired, eliminate the mission capability of the howitzer.

The most expedient method to correct cooling system problems

is by replacing components, many of which are interchangeable with components of other combat vehicles.

6-3