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1) Open engine hood. 2) Disconnect ground cable from the battery. 3) Drain engine coolant completely. 4) Disconnect radiator outlet hose from engine coolant pump. 5) Remove radiator fan motor assembly. 6) Remove V-belt(s). 7) Remove timing belt. 
Remove belt tension adjuster. 9) Remove camshaft position sensor. 10) Remove left side camshaft pulley by using ST. ST 499207100 CAMSHAFT SPROCKET WRENCH 11) Remove left side rear timing belt cover. 12) Remove tensioner bracket. 13) Disconnect heater hose from engine coolant pump. 14) Remove engine coolant pump. B: INSPECTION 1) Check engine coolant pump bearing for smooth rotation. 2) Check engine coolant pump pulley for abnormalities. 3) Using a dial gauge, measure impeller runout in thrust direction while rotating the pulley. “Thrust” runout limit: 0.5 mm (0.020 inch) 4) Check clearance between impeller and pump case. Clearance between impeller and pump case: Standard: 0.5 – 0.7 mm (0.020 – 0.028 inch)
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