1. INSPECT WATER PUMP ASSY

(a) Visually check the drain hole for coolant leakage.
(b) Turn the pulley, and check that the water pump bearing moves smoothly and noiselessly.
If the bearing moves roughly or noisily, replace the water pump assy.
(c) Visually check the air holes for coolant leakage.
If leakage is found, replace the water pump assy.
if engine coolant has leaked onto the timing belt, replace the timing belt.
Replacement
Thermostat (3MZ-FE)Replacement
1. DISCHARGE FUEL SYSTEM PRESSURE (See page 11-35 )
2. DRAIN ENGINE COOLANT (See page 16-26 )
3. REMOVE FRONT SUSPENSION BRACE SUB-ASSY UPPER CENTER (w/ Performance
Rod)
(a) Remove the 2 nuts and upper brace.
4. REMOVE V-BANK COVER SUB-ASSY (See page 14-149 )
5. REMOVE AIR CLEANER CAP SUB-ASS ...