7 Servicing/Maintenance
47 of 60
Sewabloc
433
932.59
412.28
Fig. 16:
Installing the mechanical seal
ü
Install the mechanical seal as shown in the installation drawing.
ü
The back pull-out unit of the pump has been placed in a clean and level assembly
area.
ü
The KSB 4STQ double cartridge seal is fully assembled and undamaged.
1. Insert circlip 932.59 in the shaft groove and make sure that circlip 932.59 is
positioned correctly in the shaft groove. When fitting the circlip take care to
prevent damage to the shaft.
CAUTION
Use of grease or other permanent lubricants
Torque transmission impeded / overheating of and damage to the pump!
▷
Never use grease or other permanent lubricants for fitting the torque-
transmitting elements of a mechanical seal.
▷
Use soft soap to reduce any friction caused during assembly.
▷
Never coat the mechanical seal faces with grease or oil.
2. Prior to assembly, wet the external elastomers (O-rings and gasket) and the
seats of the mechanical seal at the shaft, discharge cover 163 and seal housing
with a suitable lubricant (e.g. soap suds).
3. Press mechanical seal 433 into discharge cover 163 by hand as far as possible.
4. Fit mechanical seal 433 using mounting device 101-47. Check the mechanical
seal position against reference dimensions "K" (see table: Reference dimension
"K") and correct the installation position if required.
5. Slide O-ring 412.28 over shaft, until it abuts against the mechanical seal.
K
Fig. 17:
Reference dimension "K” from shaft end to KSB double cartridge seal
Summary of Contents for Sewabloc Series
Page 59: ......
