KSB HPK-L, Installation & Operating Manual

Page: 53 / 74

7 Servicing/Maintenance
53 of 74
HPK-L
1136.8/15-EN
7.4.9 Removing the plain bearing bush
ü The notes and steps stated in ( ð Section 7.4.1, Page 49) to
( ð Section 7.4.8, Page 52) have been observed/carried out.
ü The bearing bracket has been placed in a clean and level assembly area.
1. Remove circlip 932.05.
2. Completely pull bearing bush 545.21 and tolerance ring 500.61 out of the
bearing bracket.
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 have the same thickness as
the old ones.
– Always fit gaskets of asbestos-free materials or graphite without using
lubricants (e.g. copper grease, graphite paste).
▪ O-rings
– Never use O-rings that have been made by cutting an O-ring cord to size and
gluing the ends together.
CAUTION
Contact of O-ring with graphite or similar material
Fluid could escape!
▷ Do not coat O-ring with graphite or similar material.
▷ Use animal fats or lubricants based on silicone or PTFE.
▪ Assembly adhesives
– For gaskets, avoid the use of assembly adhesives if possible.
– If assembly adhesives are required, use a commercially available contact
adhesive (e.g. "Pattex").
– Only apply adhesive at selected points and in thin layers.
– Never use quick-setting adhesives (cyanoacrylate adhesives).
– Coat the locating surfaces of the individual components and screwed
connections with graphite or similar before reassembly.
– Prior to reassembly, screw back any forcing screws and adjusting screws.