Thermostat: Service and Repair
THERMOSTATCOMPONENTS (Part 1):
COMPONENTS (Part 2):
REMOVAL
1. REMOVE V-BANK COVER SUB-ASSEMBLY
2. REMOVE AIR CLEANER INLET COVER
3. REMOVE NO. 1 AIR CLEANER INLET
4. REMOVE ENGINE ROOM SIDE COVER RH
5. REMOVE NO. 1 ENGINE UNDER COVER
6. DRAIN ENGINE COOLANT
7. REMOVE RADIATOR RESERVOIR ASSEMBLY
(a) Disconnect the 2 reservoir hoses.
(b) Remove the 2 bolts and reservoir.
8. DISCONNECT NO. 2 RADIATOR HOSE
9. REMOVE WATER INLET SUB-ASSEMBLY WITH THERMOSTAT
(a) Remove the 3 nuts, water inlet with thermostat and gasket.
INSPECTION
1. INSPECT WATER INLET SUB-ASSEMBLY WITH THERMOSTAT
HINT: The water inlet with thermostat is stamped with the valve opening temperature.
(a) Immerse the water inlet with thermostat in water and gradually heat the water.
(b) Check the valve opening temperature.
Standard valve opening temperature: 80 to 84°C (176 to 183°F)
If the valve opening temperature is not within the specified range, replace the water inlet with thermostat.
(c) Check the valve lift.
Standard valve lift: 10.0 mm (0.394 in.) or more at 95°C (203°F)
If the valve lift is not as specified, replace the water inlet with thermostat.
(d) Check that the valve is fully closed when the water inlet with thermostat is at a low temperature (below 77°C (171°F)).
If it is not closed, replace the water inlet with thermostat.
INSTALLATION
1. INSTALL WATER INLET SUB-ASSEMBLY WITH THERMOSTAT
(a) Install a new gasket and the water inlet with thermostat with the 3 nuts.
Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)
2. CONNECT NO. 2 RADIATOR HOSE
HINT: The direction of the hose clamp is indicated in the illustration.
3. INSTALL RADIATOR RESERVOIR ASSEMBLY
(a) Install the radiator reservoir with the 2 bolts.
Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf)
(b) Connect the 2 reservoir hoses.
HINT: The direction of the hose clamp is indicated in the illustration.
4. ADD ENGINE COOLANT
5. INSTALL NO. 1 AIR CLEANER INLET
6. INSPECT FOR COOLANT LEAK
7. INSTALL ENGINE ROOM SIDE COVER RH
8. INSTALL AIR CLEANER INLET COVER
9. INSTALL V-BANK COVER SUB-ASSEMBLY
10. INSTALL NO. 1 ENGINE UNDER COVER