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TM5-4210-229-14&P
Section XII. MAINTENANCE OF ENGINE COOLING SYSTEM
Para.
Para.
Deaeration Tank Replacement ...........................4-59
General ...................................................... 4-57
Drive Belt Replacement .....................................4-62
Hoses and Piping Replacement................... 4-63
Engine Cooling System Service .........................4-58
Radiator Replacement................................. 4-66
Fan and Clutch Replacement ............................4-61
Thermostat and Housing Replacement ....... 4-65
Fan Shroud Replacement ..................................4-60
Water Pump Replacement ......................... 4-64
4-57. GENERAL.
This section contains information on the maintenance of the engine cooling system that are maintainable at the Or-
ganizational level.
4-58. ENGINE COOLING SYSTEM SERVICE.
This task covers:
Service
INITIAL SET-UP
Tools
General Safety Instructions
General Mechanics Tool Kit
Be certain the engine is cool before attempting any work
on the cooling system.
Materials/Parts
Engine OFF.
Engine Coolant (Appendix D, Item 15)
Transmission in (N) neutral.
Parking brake set.
SERVICE
Be certain the engine is cool before at-
tempting any work on the cooling system.
Serious personal injury could result from
work on a hot cooling system.
a.
Remove deaeration tank cap (1).
b.
Run engine with cap removed until upper radiator
hose is hot, indicating thermostat is open.
c.
Stop engine and open radiator drain valve (2) to
drain coolant.
d.
Close valve and add sufficient water to fill system.
e. Repeat steps b, c, and d until the drained liquid is
nearly colorless.
f.
Allow system to drain completely and then close
the radiator drain valve (2) tightly.
g.
Add sufficient coolant (Appendix D, Item 15) to
provide the required freezing and corrosion protec-
tion.
h.
Run engine with cap removed until radiator upper
hose becomes hot.
i.
With engine idling, add coolant (Appendix D, Item
15) until level reaches bottom of filler neck and in-
stall cap.
j.
Install deaeration tank cap.
4-72
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