7-04
COOLING
7-04
CLEANING AND INSPECTION
COOLING SYSTEM
To remove rust, sludge and other foreign ma-
terial from the cooling system, use either
FoMoCo Regular Cooling System Cleanser or in
severe cases use Heavy Duty Cleanser. Re-
moval of such material restores cooling efficien-
cy and avoids overheating.
In severe cases where cleaning solvents will
not properly clean the cooling system for effi-
cient operation, it will be necessary to use the
pressure flushing method.
Various types of flushing equipment are avail-
able. If pressure flushing is used, make sure the
cylinder head bolts are properly tightened to pre-
vent possible water leakage into the cylinders.
Always remove the thermostat prior to
pressure flushing.
A pulsating or reversed direction of flush-
ing water flow will loosen sediment more
quickly than a steady flow in the normal di-
rection of coolant flow.
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