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1. Heat up angular contact ball bearing 320 and the inner ring of cylindrical rolling element
bearing 322 to approx. 80 °C in an oil bath.
2. Push the angular contact ball bearing and the inner ring of cylindrical roller bearing 322
onto shaft 210 until they will not go any further.
3. Use a spanner wrench to tighte nut 920 without lockwasher 931.
4. Let angular contact ball bearing 320 cool down to approximately 5 °C above ambient
temperature.
5. Re-tighten nut 920, then unscrew it again.
6. Apply a few spots of a suitable lubricant (e.g. Molykote) to the contact faces of lockwasher
931 and nut 920.
7. Fit lockwasher 931.
8. Tighten nut 920.
9. Bend back lockwasher 931.
10. Insert circlip 932.01/932.02 into the bearing bracket.
11. In case of grease lubrication, insert disc 550.
12. Fit cylindrical roller bearing 322 (roller cage) in the bearing bracket.
13. Insert support disc 550 of the angular contact ball bearing 320 into bearing bracket
330.
14. In case of grease lubrication, insert disc 550.
15. In case of grease lubrication, fill bearing and bearing cover with grease.
Grease lubrication ( Section 7.2.3.2 Page 45)
16. Carefully push pre-assembled shaft 210 with angular contact ball bearing 320 and the
inner ring of cylindrical roller bearing 322 from the drive end into bearing bracket 330.
17. Fit pump-end bearing cover 360.01 with gasket 400.01; take care not to damage radial
shaft seal ring 421.01.
18. Fit motor-end bearing cover 360.02 with gasket 400.02; take care not to damage radial
shaft seal ring 421.02.
19. Fit bearing bracket lantern 344.
20. Tighten hex. nuts 920 at the flange of bearing bracket 330.
21. Fit keys 940.02.
22. Pull the coupling hub onto the shaft end.
23. Secure the coupling hub with a set screw.
24. Fit thrower 507, if any.
7.5.3 Installing the shaft seal
7.5.3.1 Mechanical seal
The following rules must be observed when installing the mechanical seal:
.
For installing the mechanical seal, proceed as shown in the seal installation drawing.
.
Work cleanly and accurately.
.
Only remove the protective wrapping of the seal faces immediately before
installation takes place.
.
Prevent any damage to the sealing surfaces or O-rings.
NOTE
Angular contact ball bearings must be installed in "O" arrangement. Angular contact ball
bearings installed in pairs must always be from the same manufacturer.
7 Servicing/Maintenance
