3.
Remove plug on top of water pump housing
to
4-
After thermostat has opened completely, remove
vent trapped air (Figure
7b).
Replace plug when
water emerges from hole.
it
from hot water and allow
it
to cool in surrounding
air. The thermostat should close within
a
short
time.
4.
Fill radiator to proper level.
TEST1
NG
THERMOSTAT
If
a sticking or faulty thermostat is suspected, test
as
follows:
1.
Remove thermostat from cylinder head.
2.
Heat a pan of water to approximately 150°F.
Check temperature using a thermometer immersed
in water.
3.
With thermostat suspended
in
water at temper-
ature of
1
5OoF, thermostat should start to open.
5.
If the thermostat sticks or does not operate
6.
Always install a new gasket when replacing the
properly, replace it with a new one.
thermostat.
REPAIR
After making repairs on the cooling system, tighten all
connections thoroughly. Use Permatex or thread
sealing compound on all threaded connections to
prevent leaks or the entry of air into the system.
Read instructions on Permatex Sealer can before applying sealer
to
engine
parts.
WATER
MANIFOLD
PLUG
OR
SENDER
\
WATER
PUMP
W
cs-1361
FIGURE
7b.
BLEEDING COOLING SYSTEM
15
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