TM 5-1730-245-14
4.20 ENGINE RADIATOR - SERVICE.
THIS TASK CONSISTS OF: a. Draining
b.
Flushing
c.
Refilling
INITIAL SETUP
Tools:
Equipment Condition:
Toolkit, General Mechanics (Item 5, Section III, Appendix B)
Engine stopped and cool.
General Safety Requirements
Cabinet top cover removed. Refer to para 4 16.
Air filter removed. Refer to para 4 18.
WARNING
Material/Parts Required:
Coolant/antifreeze is toxic. Avoid spilling of
coolant/antifreeze, fuel or fluids. Clean up minor
Gasket, thermostat housing, item 1, Appendix 1.
spills immediately. For large spills, notify your supervisor.
1) Slide a suitable waste container under the hydraulic power supply at the drain valve (3).
2) Remove rain cap (5). Remove the radiator fill cap (1). Turn the drain valve (3) counterclockwise to
drain the coolant/antifreeze. Close the drain valve (3) after draining by turning in valve clockwise.
3) Dispose of the waste coolant/antifreeze in accordance with local SOP.
1) Remove screws (1) and washers (9).
2) Remove thermostat housing cover (2). Leave hose (7) connected to thermostat housing cover (2).
3) Remove thermostat housing gasket (3) and thermostat (4). Discard gasket.
4) Flush the engine through the thermostat housing (8) until clean water emerges from the housing cover
(2).
5) Install thermostat (5), thermostat housing gasket (3) and thermostat housing cover (2). Install screws
(1) and washers (9). Torque to 15.5 ft lb/21 Nm.
4-25