7 Servicing/Maintenance
54 of 72
HPK
12.
Unscrew slotted round nut 920.21 (right-hand thread) and remove lock washer
931.01.
WARNING
Hot surfaces due to heating of components for assembly/dismantling
Risk of burns!
▷
Wear heat-resistant protective gloves.
▷
Remove flammable substances from the danger zone.
13.
Heat up angular contact ball bearing 320.02 and the inner ring of cylindrical
roller bearing 322.01 to 80 °C, and pull them off shaft 210.
14.
Dispose of joint rings 400.01/.02.
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.
▪
Packing rings
–
Always use pre-compressed packing rings.
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.