TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
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CO/Cooling System — Thermostat, page 6

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Thermostat — MK2 Supra Cooling System, page 6
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Page text (OCR transcript)
THERMOSTAT

REMOVAL OF THERMOSTAT

1. DRAIN COOLANT

2. REMOVE WATER OUTLET
Remove the three bolts and the water outlet from the water outlet housing.

3. REMOVE THERMOSTAT AND GASKET

INSPECTION OF THERMOSTAT

NOTE: The thermostat is numbered according to the valve opening temperature.

(a) Immerse the thermostat in water and heat the water gradually.

(b) Check the valve opening temperature and valve lift. If the valve opening temperature and valve lift are not within the following specifications, replace the thermostat.

Valve opening temperature:
86 — 90°C (187 — 194°F)

Valve lift:
More than 8 mm (0.31 in.) at 100°C (212°F)

(c) Check that valve spring is tight when the thermostat is fully closed. Replace if necessary.

INSTALLATION OF THERMOSTAT

1. PLACE THERMOSTAT IN WATER OUTLET HOUSING
Install the thermostat with the jiggle valve upward.

2. INSTALL WATER OUTLET
Install the water outlet, facing the printed side of gasket forward.

3. FILL WITH COOLANT

4. START ENGINE AND CHECK FOR LEAKS

Jiggle Valve
Printed Side