Impreza 2.5 RS Coupe F4-2.5L SOHC (2000)
18) Remove left-hand belt cover No. 2.
19) Remove tensioner bracket.
20) Remove tensioner bracket.
21) Disconnect heater hose from water pump.
22) Remove water pump.
INSPECTION
1) Check water pump bearing for smooth rotation.
2) Check water 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 (D 021) inch)