Refitting
Install a new oil seal, using the specific tool, to a depth of 2 mm (0.079 in) (set by the tool itself) relative to the top of the crankcase, at the end of the bevelled edge of the seat hole.
![](https://motoinstruction.ru/img/aprilia/17/123313.jpg)
Caution! After installing the oil seal, check that the water drainage hole under the oil seal itself is not obstructed.
![](https://motoinstruction.ru/img/aprilia/17/123314.jpg)
Fit a new shaft and integrated seal assembly using the specific tool.
- Specific tooling: 020725Y Punch for water pump overall sealing
![](https://motoinstruction.ru/img/aprilia/17/123315.jpg)
Fit the rotor drive gear.
Fit the rotor drive gear fastener nut, applying leverage on the hexagonal insert on the gear itself.
![](https://motoinstruction.ru/img/aprilia/17/123316.jpg)
Fit the rotor and tighten with the relative nut while preventing the pump shaft from turning with a spanner.
![](https://motoinstruction.ru/img/aprilia/17/123317.jpg)
Fit the water pump cover, fastening the five screws.
![](https://motoinstruction.ru/img/aprilia/17/123318.jpg)
See also specifications for this operation.