WATER
TEMPERATURE
SWITCH TEST
A heat sensitive temperature switch is installed
in
the cylinder head. The switch
is
connected
in
series with the warning system. If the switch
senses a temperature
in
excess of a predeter-
mined
limit, the contacts close and S.L.D. W is ini-
tiated.
On
models with a System Check gauge,
the "WATER
TEMP" light goes
on
and the warning
horn sounds for ten seconds.
m
WARNING
m
To
avoid possible fire
or
explosion, use a
suitable container
for
the oil,
DO
NOT use
open
flame as a heat source, and use an
oil
that has a flashpoint above 300°F
(150°C),
such as a 4-cycle
motor
oil.
Separate the connector and remove the tempera-
ture switch from the
cylinder head.
Using a continuity
light or ohmmeter, make posi-
tive connections to the switch - one
lead to the
switch
lead and one lead to the metal portion of
the switch.
ELECTRICAL
WATER TEMPERATURE SWITCH
TEST
Place the switch and
an
accurate industrial ther-
mometer
in
warm automotive crankcase oil.
Slowly
increase the oil temperature using an
external heat source.
The temperature switch must function
as
follows:
Wire
Switch Closed
Switch
Open
Color
Tan/Red
180°F
155°F
(82°C)
(68°C)
Replace the switch if test results vary.
99
E
o
U
Qj
)(
~
Qj
~
ii
E
To Next Page
Loading...
Need help?
General
