7 Servicing/Maintenance
61 of 80
HPK
1121.8/06-EN
12. Insert support disc 550.23 of angular contact ball bearing 320.02 into bearing
bracket 330.
13. Carefully insert pre-assembled shaft 210 with angular contact ball bearing
320.02 and the inner ring of cylindrical roller bearing 322.01 into bearing
bracket 330 from the drive end.
14. Fit pump-end bearing cover 360.01 with joint ring 400.01.
15. Fit drive-end bearing cover 360.02 with joint ring 400.02.
16. Fit bearing bracket lantern 344.
17. Tighten hexagon nut 920.04 at the flange of bearing bracket 330.
18. Fit keys 940.02.
19. Slide the coupling hub onto the shaft end.
20. Secure the coupling hub with an adjusting screw.
21. Fit thrower 507.01, if any.
7.5.3 Fitting 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 contact faces immediately before
installation takes place.
▪ Prevent any damage to the sealing surfaces or O-rings.
▪ After inserting the stationary ring of the mechanical seal, check that it is plane-
parallel in relation to the casing part.
▪ The surface of the shaft protecting sleeve must be absolutely clean and smooth,
and the sleeve's mounting edge must be chamfered.
▪ When sliding the rotating assembly onto the shaft protecting sleeve, take
appropriate steps to protect the surface of the shaft protecting sleeve from
damage.
ü The notes and steps stated in (ðSection7.5.1,Page59) to
(ðSection7.5.2,Page60) have been observed/carried out.
ü The bearing assembly and the individual parts of mechanical seal 433 are kept in
a clean and level assembly area.
ü All dismantled parts have been cleaned and checked for wear.
ü Any damaged or worn parts have been replaced by original spare parts.
ü The sealing surfaces have been cleaned.
1. Slide thrower 507.01 (if any) onto shaft 210 from the pump end.
2. Fasten seal cover 471 with inserted O-ring and the stationary ring of the
mechanical seal to casing cover 161 with hexagon nut 920.02.
3. Insert casing cover 161 with O-ring 412.01 into lantern 344; watch joint ring
411.11.
4. Fit the rotating assembly of mechanical seal 433 on shaft protecting sleeve
524.01 (observe distance B - see Supplementary Sheet of the mechanical seal).
5. Slide pre-assembled mechanical seal 433 and shaft protecting sleeve 524.01 onto
shaft 210.
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