Workshop Manual

009W2329-R01
O6
Circulation pump for freshwater
The circulation pump shown on page O7 is used for freshwater cooling, both when cooled by
heat exchanger and by keel cooling.
Removal of circulation pump
1. Remove the inlet and outlet pipes from the pump.
2. Loosen the pump from its fixing on the rear end cover and lift it out.
Dismantling of circulation pump
1. Loosen the screws 500C2363 in the cover 000E4934 of the pump and remove the
cover and gasket 560K1119.
2. Pull out the circulation wheel 000E4933 with a special tool and now the washer
530Q9973 and the stuffing box 530Q9972 can be changed. The flexible stuffing box
cannot be repaired but has to be exchanged, if the contact face shows signs of
scratches or fractures.
3. Remove the locking ring 522A0042.
4. Take out the washer 522A9022.
5. Press out the shaft 000E5283 towards the open side. Now the individual ball bearings
and the seal ring 561B0201 can be changed.
Reassembly of circulation pump
Assemble the pump in the reverse order of the dismantling.
Fill the ball bearings with grease free from acid.
When assembling and fitting the circulating pump there must only be used original gaskets.
The plug in the bottom of the pump is intended for draining off the water in the pump and the
pipes in case of periods of frost.
The pump is driven through connection with the shaft end from the Johnson pump.