Thermostat Inspection; Thermostat Installation - Toyota 1HD-FT Repair Manual

ENGINE - COOLING SYSTEM
EG-' S5
THERMOSTAT INSPECTION
INSPECT THERMOSTAT
HINT: The thermostat is numbered with the valve
opening temperature.
EG
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tal Immerse the thermostat in water and gradually heat
the water.
(b) Check the valve opening temperature.
V.lve opening tempereture:
7. - 7S"C 1165 - In"F)
If the valve opening temperature is not as specified.
replace the thermostat.
THERMOSTAT INSTALLATION
--.
(c) Check the valve lift.
V.lve lift:
10
mm
(0.39 In.) or mor••
t
90·C 1194-FI
If the valve lift is not as specified. replace the thermo-
stat.
(d) Check that the valve spring is tight when the thermo-
stat is fully closed.
If
not
closed. replace the thermostat.
1. PLACE THERMOSTAT IN CYLINDER SLOCK
(a) Install a new gasket to the thermostat.
(b) Ins1all the thermostat with the jiggle valve upward.
'l
2. INSTALL WATER INLET
(a) Temporarily install the water inlet with the 3 bolts.
(b)
Alternately tighten the
3
bolts in several passes.
Torque: t9.8 N·m (200 kgf·cm. 14 ft·lbfl
3. FILL WITH ENGINE COOLANT
4_ START ENGINE. AND CHECK FOR COOLANT
LEAKS
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Valve Lift
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