Coolant Pump
Coolant Pump
Removing
- Remove the small coolant pipe. Refer to => [ Small Coolant Pipe ] Small Coolant Pipe.
- Disconnect the connector - 1 - from the throttle valve control module.
- Remove the bolts - arrows - and remove the throttle valve control module.
- Remove the coolant pump toothed belt. Refer to => [ Coolant Pump Toothed Belt ] Coolant Pump Toothed Belt.
- Remove the nut - 1 - and bolt - 2 - and the intake manifold support.
- Remove the bonded rubber bushing for the intake manifold support from the intake manifold.
- Remove the Engine Coolant Temperature (ECT) sensor. Refer to one of the following:
Inserted version, refer to => [ Engine Coolant Temperature (ECT) Sensor with a Clip ] Service and Repair.
Threaded version, refer to => [ ECT Sensor with a Retaining Plate ] Service and Repair.
- Remove the coolant pump bolts - 1 through 5 -.
- Remove the coolant pump from the centering pin and remove the engine oil cooler.
Installing
• Replace the gaskets and O-rings.
• Install the coolant pump without the ECT sensor. The ECT sensor slightly sticks out of the coolant pump making it difficult to install the coolant pump.
- Coat the O-rings - 4 - with coolant.
- Make sure both centering pins are installed in the cylinder block.
- Install the union - 2 - into the engine oil cooler - 1 -.
- First slide the coolant pump - 3 - onto the union and then onto the centering pins in the cylinder block.
- Using a mirror, check if the coolant pump is seated correctly on the centering pins.
- Tighten the bolts in the sequence - 1 through 5 -.
• If a new coolant pump was installed, then the protective cap - arrow - must be removed.
- Install the ECT sensor. Refer to => [ Engine Coolant Temperature Sensor G62 ] Service and Repair.
Inserted version, refer to => [ Engine Coolant Temperature (ECT) Sensor with a Clip ] Service and Repair.
Threaded version, refer to => [ ECT Sensor with a Retaining Plate ] Service and Repair.
The rest of the installation follows the reverse of the removal procedure.