Water Pump: Service and Repair

Coolant Pump

Special tools, testers and auxiliary items required

• Drip Tray (VAS 6208)

Removing

Cover cap of expansion tank with a rag and open carefully, as hot steam or hot coolant may escape when opening.

- Open cap of coolant expansion tank.

- Disconnect the electrical connector on the mass airflow (MAF) sensor (G70) - 3 -.






- Open clips - 1 and 2 - and remove air guide hose from MAF sensor.

- Remove the front air intake connector on lock carrier - 4 -.

- Remove engine cover.

- Remove center noise insulation fasteners - 1 to 4 -.






- Remove the right noise insulation - arrows -.






- Remove noise insulation frame - arrow -.






- Drain the coolant. Refer to => [ Cooling System, Draining and Filling ] Procedures.

- Remove toothed belt. Refer to => [ Toothed Belt, without Divided Toothed Belt Guard ] Toothed Belt, without Divided Toothed Belt Guard.

- Remove the coolant pump bolts - 1 - and then remove the coolant pump - 2 -.






- Remove O-ring - 3 -.

Installing

Install in reverse order of removal. Note the following:

• For the correct tightening specifications, refer to => [ Cooling System Overview ] Removal and Replacement

- Clean and/or smooth O-ring sealing surface.

- Coat the new O-ring - 3 - with coolant.






- Insert coolant pump - 2 -.

• Installation position: Sealing plug in housing points downward

- Tighten coolant pump bolts - 1 -.

- Install toothed belt. Refer to => [ Toothed Belt, without Divided Toothed Belt Guard ] Toothed Belt, without Divided Toothed Belt Guard.

- Install the ribbed belt. Refer to => [ Ribbed Belt ] Ribbed Belt.

- Fill with coolant. Refer to => [ Cooling System, Draining and Filling ] Procedures.