Water Pump: Service and Repair

COOLANT PUMP REPLACEMENT:

Coolant Pump, Exploded View:

General:
- The image above is an exploded view of the coolant pump. The pump and the housing are separate parts and the pump can be replaced separately. You may want to remove the pump and housing from the engine as a unit and separate them later.

Removal:
1. Drain the cooling system.
2. Remove the nut and T-bolt that fastens the camshaft drive belt cover to the coolant pump. Disconnect the remaining hoses from the pump housing.
3. Remove pump and housing assembly. Four bolts hold the coolant assembly to the engine.
4. Disassemble the pump and housing assembly. Remove the pulley(s) from the coolant pump shaft. Remove the eight bolts and washers and separate the pump from the housing.
5. Assembly is the reverse of disassembly. Use a new gasket between the coolant pump and housing. Tighten the eight bolts evenly until all are torqued to 9 Nm (80 in lb). Install the pulley(s). Torque the bolts to 20 Nm (15 ft lb).

Installation:
1. Clean the surface of the engine block where it will be contacted by the pump housing and the 0-ring. Install a new 0-ring in the recess that surrounds the water outlet.

NOTE: The 0-ring between the coolant pump housing and the engine block does not require sealer.

2. Loosely install the coolant pump on the engine. The two short bolts are used at the top of the pump housing. Torque the four bolts evenly to 22 Nm (16 ft lb). Refasten the camshaft drive belt cover to the coolant pump.
3. Install the hoses and refill the cooling system. Install and adjust the V-belt.