Refitting the water pump
Clean the seat in the cover, any parts you intend to reuse, and the impeller shaft. Lubricate with engine oil and refit as follows.
Use drift (C) no. 88713.0869 to fit the new mechanic seal (9) on the impeller shaft.
Working on cover internal side, insert the inner spacer (15) with the sharp edge (D) outwards.
Using a suitable drift working on the outer ring, drive bearing (13) - with the shielded side (E) facing the cover - fully home on the spacer (15).
Fit the other bearing (12), driving it fully home on bearing (13).
Apply the recommended threadlocker on the screws (10).
Fit the two screws (10) with the washers (11), and tighten to a torque of 10 Nm (Min. 9 Nm - Max. 11 Nm).
Turn the cover upside down and use drift (F) no. 88713.0870 to install counter-washer (14) fully home on spacer (15).
Counter-washer (14) must be positioned so that the white side is facing upwards.
Fit the impeller shaft (6) with the previously installed mechanical seal (9).
Fit spacer (8) so that groove (G) on the internal diameter where ring (7) shall be fitted, faces upwards.
Bring the oil seal fully home.
Install ring (7) in the suitable groove (H) on the impeller shaft.
Turn the impeller (6) and make sure that it can rotate freely, without excessive resistance.
Clean the mating surface thoroughly on the pump cover and on the generator cover.
Apply on water pump cover (3) a bead of sealing compound as shown in the figure.
Fit centring dowels (5) and position the cover (3) on the generator cover.
Start screws (1).
Apply the specified threadlocker to screw (16) and start it.
Apply the specified threadlocker to screw (2) and start it.
Tighten the screws to a torque of 10 Nm (Min. 9 Nm - Max. 11 Nm), respecting the sequence shown in the figure.
After tightening, remove any excess of threadlocker.
Fill the system with engine oil (Changing the engine oil and filter cartridge).
Fit the cooling system hoses on the water pump cover (Refitting cooling system hoses and unions).
Fill the cooling system (Changing the coolant).
Fit the half-fairings (Refitting the tank fairings).