Bukh DV36/48, Workshop Manual

Page: 123 / 196

009W2329-R01
O5B
Removal of the pump
4. Loosen the three screws in the flange marked
20
.
5. Remove the cooling water pipes going to and from the pump.
6. Lift the pump free in one piece from its attachment in the engine block.
Dismantling of the pump
5. Loosen the three screws marked
12
in the front cover and remove the front cover
marked
3
.
6. Withdraw the neoprene impeller which is mounted on a multiple spline shaft.
7. The cam marked
5
determining the characteristic of the pump can be exchanged now
by loosening the screw marked
13
.
8. Remove the wear washer marked
8
.
9. Remove the locking ring marked
15
.
10. Press out the pump shaft marked
2
of the pump housing with ball bearings marked
16
and gear-wheel.
11. Now the sealing rings marked
17
and the O-ring marked
18
and the washer marked
11
can be exchanged/removed.
Dismantling and reassembly of gear-wheel
For operation of the pump a gear-wheel ha s been shrinked ont o the pump shaft. The gear-
wheel is secured by key and tongue.
The gear-wheel can be pulled off the shaft by means of a special tool.
When fitting a gear-wheel there s hould be a difference of temper ature between the shaft and
gear-wheel of 236°C.
Reassembly of pump
The pump is assembled in the reverse order of the dismantling.
Refitment of the pump
To be carried out in the reverse order of the dismantling and it should be checked that the
rubber ring marked
19
fits tightly aga inst the be aring surface of the flange marked
20
.