Bearing Block Refurb

(Dismantle – Fault Find – Refurbish – Rebuild)

1. The faulty bearing block.

2. Because I did not have a C-Spanner, I used a pump shaft key and Stilsons to unscrew the labyrinth lock nut.

3. Dislodged labyrinth drive end.
4. Labyrinth drive end removed.
5. The shims.
6. Other end removed.

6. Bearing shaft is pressed out.

7. Bearing shaft cleaned and bearings cleaned.
8. Both bearings removed.
9. Fully dismantled bearing block.

10. The bearing shaft has been re-cleaned and grease retainers fitted.

11. I slid one bearing onto the shaft.

12. Using a plate to hold the bearing up to the middle of the shaft I used the hydraulic press to press the shaft into the bearing.

13. I greased all components using mobil fm 222.

14. The bearing as you can see is fitted.
15. The other bearing has been pressed on.
16. Using a rubber mallet I hammered the race into the housing.
17. I ensured the rotation of the impeller matches up to where the rotation arrow is going.
18. I slotted the shaft and bearings into the race.

19. I cleaned the existing shims.

20. I measured each shim using a Vernier caliper. Shims; 0.7 x 1; 0.6 x 1; 0.5 x 1; 0.4 x 1

21. I noted all readings onto the housing itself for future reference, in case we ever need to work on it again.

22. The existing shims were fitted back onto the labyrinth drive-end

23. I tightened the labyrinth drive-end and labyrinth locknut to one side of the housing. This is one whole side complete.

24. I fitted the race to the other side and carried out the same operations as before.

25. I then went on to do the same operation on the other side.

26. I fitted new shims to the other side. I used shims: 0.4 x 4;0.12 x 1; 0.2 x 1

27. The labyrinth on the other side was then fitted.
28. Bearing block has now been reassembled.