Disassembly
Remove the water pump.
Press the hub with a Kukko 00 8 500 puller.
Remove the retaining ring, press the impeller off the pump shaft and press the bearing out of the pump housing.
Replace bearing and seal.
Check the condition of the impeller and replace if necessary.
Assembly
Press in the bearing with the roller, directing its long end towards the impeller.
Install the seal in the pump housing.
Press on the impeller applying a force of 440 kgf for a reused impeller or about 500 kgf for a new impeller. In this case, it is necessary to maintain a gap of 0.6±0.2 mm between the impeller and the overlapping ring of the pump housing.
Install retaining ring.
Press on the hub, maintaining a dimension of 4.1 + 0.3 mm between the end of the roller and the surface of the hub.