Radiator; Thermostat - Subaru SVX 1992 Manual

ENGINE COOLING SYSTEM [W3B0] 2-5
2. Thermostat 3. Radiator
~A: REMOVAL AND INSTALLATION
A: ON CAR SERVICE
1) Remove the thermostat case cover and gasket, and
pull out the thermostat .
2) Install the thermostat in the intake manifold, and
install the thermostat cover together with a gasket .
a. When reinstalling the thermostat, use a new gasket .
b. The thermostat must be installed with the jiggle pin
upward.
c. In this time, set the jiggle pin of thermostat for front
side.
B : INSPECTION
Replace the thermostat if the valve does not close
completely at an ambient temperature or if the follow-
ing test shows unsatisfactory results .
Immerse the thermostat and a thermometer in water .
Raise water temperature gradually, and measure the
temperature and valve lift when the valve begins to
open and when the valve is fully opened . During the
test, agitate the water for even temperature distribution .
The measurement should be to the specification .
Starts to open:
76.0 - 80 .0°C (169 - 176°F)
Fully opens:
91°C (196°F)
1) Remove radiator cap, top off radiator, and attach
tester to radiator in place of cap .
2) Apply a pressure of 157 kPa (1 .6 kg/cMZ, 23 psi) to
radiator to check if:
(1) Water leaks at/around radiator .
(2) Water leaks at/around hoses or connections.
Fig . 17
a. Engine should be off.
b. Wipe water from check points in advance.
c. Be careful to prevent cooling water from spurting
out when removing tester.
d. Be careful also not to deform filler neck of radiator
when installing or removing tester.
B2-230
Fig. 16
B : REMOVAL
1) Disconnect battery cables and remove battery from
body.
2) Lift up the vehicle, and remove lower cover .
3) Drain coolant from radiator .
(1) Fit end of vinyl tube into drain pipe.
(2) Loosen drain cock and drain coolant .
Refer to C .1-5.
Fig. 18
11
1
Thermometer
2 Thermostat