3
Fig.
3-
15
3
5
49
0636
145
49
0823
146
3-G
.
C
LEANING
COOLING SYSTEM
1. Remove the radia
tor
cap.
2.
Open
the drain cocks and drain the coolant.
3. Close the drain cocks and supply clean
sof
t water
( demineraliz
ed
water).
Note:
If
necessary, use cleaning
solution
to
loosen
the
rust
and scale, according
to
the
instructions given by
the
maker
of
the
cleaning solution.
4.
Run the engine for about one hour, keeping the
normal operating temperature.
5.
Drain the coolant completely and flush clean water
through the cooling system
in
the
direction opposite
to
the normal coolant
fl
ow. This action causes
the water
to
get behind the corrosive deposits and
force them out.
6. Fill the cooling system with a mixture
of
clean
soft water (demineralized water) and anti-freeze
solution or anti-corrosive solution according to
the season and maker's instruction.
Not
e:
During a
complete refill
of
the
cooling
system,
always
operate
the
engine
until
it
reaches
normal
operating
temperature
to
bleed
air form
the
system. Then,
let
the
system
cool, check
the
coola
nt
level,
and
add
coolant as necessary
to
the
specified
level.
SPECIAL TOOLS
Puller, pulley boss
Support
block, water pump
im
peller
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