7 Servicing/Maintenance
97 of 116
CHTRa
WARNING
Hot surfaces due to heating of components for assembly/dismantling
Risk of burns!
▷
Wear heat-resistant protective gloves.
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Remove flammable substances from the danger zone.
3. Heat drive-end grooved ball bearings 320.01 to between 80 °and 100 °C using
an oven or induction device, and fit on the shaft.
4. Allow the grooved ball bearings to cool down.
5. Slide lock washer 931.01 onto shaft 210.
6. Fit locknut 920.03 and tighten.
7. Bend tab of lock washer 931.02 so that it engages with the nut’s groove (nut
locking).
8. Attach the drive-end bearing housing to the lifting equipment.
9. Slide bearing housing over shaft 210.
10. Insert hexagon head screws 901.01 but do not yet tighten.
11. Check the position of the bearing housing relative to the pump shaft using a
dial gauge. Re-align the bearing(s) if necessary. (
12. Insert taper pins 560 into the bearing housing. Reaming the taper pin holes with
a reamer may be necessary after bearing housing re-alignment. If too much
reaming is required, make a new tapered hole in another position.
13. Tighten hexagon head screws 901.01.
14. Slide bearing cover 360.01 towards the bearing housing until it abuts the
bearing housing.
15. Tighten hexagon head screws 901.02.
16. Slide labyrinth ring 423.01 into the bearing housing. Ensure the labyrinth ring is
positioned correctly, see manufacturer’s product literature.
17. Slide labyrinth ring 423.02 into its seat in the bearing cover. Ensure the labyrinth
ring is positioned correctly, see manufacturer’s product literature.
7.4.9.3 Re-aligning the bearing(s)
If the bearing housing is not correctly centred relative to the rotor, the bearing
housing must be re-aligned.
1. Rotate the rotor using a belt wrench to check whether the rotor has been
aligned correctly. Ensure that it rotates freely without rubbing contact with
other parts. Do not apply excessive force when rotating the rotor.
2. Correct the radial alignment of bearing housing 350.01 or 350.02 using
adjusting screws 901.
3. Correct the axial alignment of bearing housing 350.01 or 350.02 by machining
spacer sleeve 525.01.
7.4.10 Securing the mechanical seal in place
ü
The manufacturer’s product literature has been observed.
1. Tighten the adjusting ring of cartridge mechanical seal 433.
2. Loosen the mechanical seals’ locking discs.
