Fig.
1A-29
Battery power
Fig.
1A-30
Jo
vacuu
m
amplifier
Fig.
1A
-
31
•
•
Fig.
1A-32
lA
(for Air switching valve)
1.
Disconnect vacuums sensing tubes from the three
way solenoid valve and vacuum pipe.
2. Blow through the solenoid valve from the vacuum
sensing tube
@ .
Make sure the
air
passes through
the valve and comes
out
from the air filter
@
of
the
so
le
noid valve.
3. Start
the engine and run
it
at
1,200
±
100
rpm.
4.
Blow through the solenoid valve from the vacuum
sensing tube
@ .
Make sure the air passes through
the valve and comes
out
from the
port
@ .
5.
If
the three way solenoid valve does n
ot
operate
properly, replace with a new one.
1A-A-11
. Engine Speed
Unit
a. Checking engine speed
unit
1. Connect the voltmeter to the terminal
as
shown
in figure.
2. Slowly increase the engine speed and record the
engine speed at which the current flows
to
circuit.
The engine speed should be
1,200
±
l
00
rpm.
3. Slowly
decrease the engine speed and record the
engine speed
at
which the curr
ent
does not flow
to
the circuit.
The difference between the engine speed recorded
in
Step
2
and
3 should be
100 - 3
00
rpm.
4. Replace the engine speed unit,
if
necessary.
1A-A-12
. Water Thermo Switch
a.
Replacing
water thermo switch
1.
Drain the coolant from the radiator.
2. Disconnect the bullet connectors from the switch.
3. Loosen and remove the water thermo switch from
the radiator lower tank.
4.
Install the water thermo switch
by
following the
removal procedures
in
the reverse order.
lA:
8
J.
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