Drain the engine coolant.
System is under high pressure when the engine is hot. To avoid danger of releasing scalding engine coolant, remove the cap only when the engine is cool.
Remove drive belt(A).
Remove the timing belt.
Remove the water pump(A) and gasket(B).
Drain the engine coolant.
Remove the air cleaner assembly.
Disconnect the radiator upper and lower hose(A, B).
Disconnect the Engine Coolant Temperature(ECT) sensor connector.
Remove the coolant hose related to the heater hoses and the Engine Coolant Temperature(ECT) system.
Remove wiring protector.
Remove water temperature control assembly(A) and the gaskets(B).
Remove the water pipe(A).
Check each part for cracks, damage or wear, and replace the coolant pump assembly if necessary.
Check the bearing for damage, abnormal noise and sluggish rotation, and replace the coolant pump assembly if necessary.
Check for coolant leakage. If coolant leaks from hole, the seal is defective. Replace the coolant pump assembly.
A small amount of "weeping" from the bleed hole is normal.
Install the water pump(A) and a new gasket(B) with the bolts.
Tightening torque
14.7 ~ 21.6Nm (1.5 ~ 2.2kgf.m, 10.8 ~ 15.9lb-ft)
Clean the contacting face before assembling.
Install the drive belt(A).
After inserting the drive belt between engine support bracket and power steering pump (or idle pulley), install the drive belt as above and install the tensioner arm applying force to counter-clockwise with a wrench)
Install the engine support bracket(A).
Tightening torque :
58.8 ~ 68.6 Nm (6.0 ~ 7.0 kgf.m, 43.4 ~ 50.6Ib-ft)
After the removal, engine coolant can bo drained a little from that point(B) which is a matter of on importance.
Over-torque can damage thread of cylinder block.
Be care the difference of upper 2 botls and lower 1 bolt lenght.
Install drive belt(A).
Fill with engine coolant.
Start engine and check for leaks.
Recheck engine coolant level.
Install the water pipe(A).
Tightening torque
16.7 ~ 19.6Nm (1.7 ~ 2.0kgf.m, 12.3 ~ 14.5lb-ft)
Install the water temperature control assembly(A) with a new gasket(B).
Tightening torque
29.4 ~ 41.2Nm(3.0 ~ 4.2kgf.m, 21.7 ~ 30.4lb-ft
Use new O-rings and wet them with water or coolant when reassembling.
Install the wiring protector.
Connect the heater hose and ECT hose.
Connect the ECT sensor connector.
Connect the radiator upper and the lower hose(A).
Install the air cleaner assembly.
Fill with engine coolant.
Start engine and check for leaks.
Recheck engine coolant level.