6B-40 - CLOSED COOLING MODELS 90-823225--1 1096
6. Clean tubes (passages) in heat exchanger and
coolers by running a suitable wire brush through
each tube.
71724
a
a - Wire Brush, Sized To Fit Passage
7. Rinse out heat exchanger and fluid cooler tubes
with tap water from a hose to remove loosened
particles.
8. Install end covers on heat exchanger as follows:
a. Clean gasket mating surfaces on end covers
of heat exchanger.
b. Inspect gaskets and O-rings for damage and
replace if necessary.
c. Reinstall end covers with components
shown. Torque end cover screws to 1 to 1-1/2
turns past hand tight.
71515
b
d
a
c
a - End Cover (Heat Exchanger)
b - Screw
c - O-ring
d - Rubber Gasket
9. Install all hoses previously disconnected . Tight-
en hose clamps securely.
10. Start engine and check for leaks.
Cleaning Closed Cooling Section
Closed Cooling section of cooling system should be
cleaned whenever decreased cooling efficiency (due
to internal deposits) is experienced.
A good grade automotive cooling system cleaning
solution, that is compatible with copper and cast iron
may be used to remove rust, scale or other foreign
material. Manufacturer’s instructions of particular
cleaner being used, should be carefully followed to
ensure a safe and effective cleaning operation.
If coolant section is extremely dirty, a pressure
flushing device may be used to flush out remaining
deposits. Flushing should be done in direction
opposite normal coolant flow (with thermostat re-
moved) to allow water to reach behind deposits and
force them out (refer to “Cooling System Water Flow
Diagram,” following). Follow instructions which ac-
company flushing device for proper hookup and
flushing procedure.
To Next Page
Loading...
