13. Screw grub screw 904.20 into oil thrower 508.01.
14. Guide cylindrical roller bearing 322.01 (roller cage) into bearing bracket 330.
15.
Carefully insert shaft 210 together with angular contact ball bearing 320.02 and
the inner ring of cylindrical roller bearing 322.01, including oil thrower 508.01
(if any) into bearing bracket 330 towards the pump end.
16. Insert O-ring 412.22 into the groove of motor-end bearing cover 360.02.
17. Insert motor-end bearing cover 360.02 with O-ring 412.22 into bearing bracket
330 from the motor end.
18. Screw hexagon head bolts 901.37 with bearing cover 360.02 into bearing
bracket 330 from the motor end.
19. Fit pump-end bearing cover 360.01 with joint ring 400.01.
20. Screw socket head cap screws 914.01 into bearing bracket 330.
21. Slide thrower 507.01 onto shaft 210 from the pump end, leaving a 2 mm gap
between the thrower and pump-end bearing cover 360.01.
22. Screw grub screw 904.41 into pump-end thrower 507.01.
23. Slide thrower 507.02 onto shaft 210 from the motor end, leaving a 2 mm gap
between the thrower and motor-end bearing cover 360.02.
24. Screw grub screw 904.41 into motor-end thrower 507.02.
25. Fit fan hood 882, fan hub 485.02 and fan wheel 831.02, if any.
26. From the motor end, insert key 940.02 into the keyway at the shaft end.
27. Pull the coupling half onto the shaft end.
28. Screw the socket head cap screw into the coupling hub.
7.5.3 Fitting the shaft seal
7.5.3.1 Installing the cartridge seal
Always observe the following points when installing the cartridge seal:
▪ Install the cartridge seal as described in the seal installation drawing.
▪ Work cleanly and accurately.
▪ Prevent any damage to the sealing surfaces or O-rings.
✓ The notes and steps stated in (⇨ Section 7.5.1 Page 49) to (⇨ Section 7.5.2 Page
50) have been observed/carried out.
1.
Fit seal cover 471 and/or seal cartridge and tighten hexagon head bolts 920.02.
2.
Guide casing cover 161 with cartridge seal 433 onto the shaft from the pump
end.
3. Carefully guide complete pre-assembled bearing bracket 330 over the studs
902.15 which have been screwed into casing cover 161.
4. On cooled versions, make sure not not damage O-rings 412.01/.31 at casing
cover 161.
5. Screw casing cover 161 to the complete bearing cover 330 with hexagon nuts
920.15.
7.5.4 Fitting the impeller
7.5.4.1 Fitting the impeller — for all bearing bracket sizes
✓ The notes and steps stated in (⇨ Section 7.5.1 Page 49) to (⇨ Section 7.5.3.1 Page
51) have been observed/carried out.
✓ The back pull-out unit has been placed in a clean and level assembly area.
✓ The pre-assembly (motor, shaft, bearing bracket, casing cover) has been placed in
a clean and level assembly area.
7 Servicing/Maintenance
RPH
51 of 76
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