7 Servicing/Maintenance
44 of 64
KWP-Bloc
3. Undo hexagon nuts 920.15 or socket head cap screws 914.22 (on pump sizes
50-200 and 65-200).
4. Take off discharge cover 163.
5. Remove the stationary assembly of the mechanical seal.
6. Remove O-ring 412.08.
7. Clean all components and inspect them for signs of wear.
7.4.6 Removing the shaft and rolling element bearings
ü
The mechanical seal has been removed. (
1. Remove circlip 932.01.
2. Slide joint ring 411.77 off the shaft. Remove the oil ring, if any.
3. Remove shaft 210 with rolling element bearing 321.01 from intermediate
lantern 146.
4. Remove circlip 932.20.
5. Pull off rolling element bearing 321.01.
6. Remove insert ring 513.11 from intermediate lantern 146.
7. Insert O-ring 412.11.
8. Clean all components and inspect them for signs of wear.
7.5 Reassembling the pump set
7.5.1 General information/Safety regulations
WARNING
Improper lifting/moving of heavy assemblies or components
Personal injury and damage to property!
▷
Use suitable transport devices, lifting equipment and lifting tackle to move
heavy assemblies or components.
CAUTION
Improper reassembly
Damage to the pump!
▷
Reassemble the pump (set) in accordance with the general rules of sound
engineering practice.
▷
Use original spare parts only.
Sequence
Always reassemble the pump in accordance with the corresponding general assembly
drawing.
Sealing elements
▪
Gaskets
– Always use new gaskets, making sure that they are of the same thickness and
material as the old ones.
– Always fit gaskets of asbestos-free materials or graphite without using
lubricants (e.g. copper grease, graphite paste).
▪
O-rings
– Always use new O-rings, making sure that they are of the same thickness and
material as the old ones.
– Never use O-rings that have been made by cutting an O-ring cord to size and
gluing the ends together.