KSB Multitec - Replacing the Shaft Protecting Sleeve; Removing the Mechanical Seal

Multitec
7.3.4.2 Replacing the Shaft Protecting Sleeve
- Remove the bearing as described in sections 7.3.3.1 and
7.3.3.2.
- Remove packing rings as described in section 7.3.4.1.
- Grease-Lubricated version pull V-ring 411.6 off spacer sleeve
525.1.
- Remove O-ring 412.10.
- Take off spacer sleeve 525.1.
- Remove bearing housing 350.1
- Remove the seal housing 441.1 together with gland cover
452.
- Remove key 940.
- Take off sleeve 524 with a pull-off device. Use the groove in
the sleeve to do so.
- Remove O-ring 412.4.
N. B.: If the sleeve 524 proves difficult to remove, the balance
drum can be used for leverage.
- Remove balance drum 59-4, disc 550.3 and sleeve 524 with
a pull-off device engaged in the threaded holes on the drum.
This is not possible on pumps without balance drum.
Fig. 7.3-7
Pump design without balance drum
Fig. 7.3-8
7.3.5 Removing the Mechanical Seal
- Remove the bearings as described in sections 7.3.3.1 and
7.3.3.2.
- For grease lubricated version pull V-ring 411.6 off spacer
sleeve 525.1
- Remove O-ring 412.10.
- Pull off spaces sleeve 525.1.
- Remove any auxiliary pipe work (circulation, etc.), depending
on the pump version.
- Loosen nuts 920.3 at the mechanical seal cover until the spring
is relaxed.
- Remove bearing housing 350.1.
- Take off mechanical seal cover 471.1 with the seat ring and
gasket 400.1, remove spring loaded ring (not in case of
bellows seal).
- Remove key 940.2.
- Pull off sleeve 523.1 with the rotating assembly of the
mechanical seal. (Two holes are supplied in the sleeve for
engaging a pull-off device.)
- Take off shaft seal housing 441.1
- Remove O-ring 412.4.
Fig. 7.3-9
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