Volvo Penta D4/D6 water pump leak

The sea water pump, labeled 3589907 and replaced by 21380890, was leaking a little so a change of seal was necessary. Numbers below refers to the explode view.

• Detach the generator belt from the pump pulley and the 2 hoses from the pump.
• Unscrew the water pump, 4 scews, from the engine block.
• Remove the cover, 7, from the pump.
• Pull out the impeller, 6.
• Remove the cam, 4, by unscrewing screw 18.
• Remove the washer, 22.
• Remove the lock ring 14 and washer 21.
• With a pliers remove the seal 8.

• If You don't manage to remove the seal, 8, You have to remove the shaft from pump housing, using a puller. The seal will stay in the housing and can be pushed out from the ball bearing side.
• Install a new seal, 3583609, and assemble the other parts in reverse order.

The explode view is from marinepartseurope.com, link to our D6, where also the spare parts are available with quick delivery.

A trix when reassembly the shaft/bearings into the housing is to put the housing in the oven, 80 degrees celsius, and the shaft with the bearings into the freezer for 1 hour. Then it just "falls in".