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7 Servicing/Maintenance
Grease lubrication for shaft units 50, 60, 60.1 (reinforced bearing assembly)
ü The individual parts have been placed in a clean and level assembly area.
ü All dismantled parts have been cleaned and checked for wear.
ü Any damaged or worn parts have been replaced by original spare parts.
ü The sealing surfaces have been cleaned.
1. Press radial ball bearings 321.01 and 321.02 onto shaft 210.
Make sure the bearing side with the shield rests against the shaft shoulder (see
illustration: Installing the radial ball bearings).
2. Slide the pre-assembled shaft into bearing bracket 330.
3. Fit circlips 932.01 and 932.02.
4. Fasten bearing covers 360.01 and 360.02 with hexagon head bolts 901.01 and
901.02.
5. Fit thrower 507.01.
6. Insert key 940.02.
7. Fit the coupling hub on pump shaft 210. For split-hub coupling designs, fit the
hub halves on pump shaft 210. Fit and tighten the screws clamping the hub
halves together. Observe the tightening torques. (ð Section 7.6, Page 47)
8. Secure the coupling hub with a grub screw.
7.5.3 Fitting the shaft seal
7.5.3.1 Installing a single mechanical seal
Installing the
The following rules must be observed when installing the mechanical seal:
mechanical seal
▪ Work cleanly and accurately.
▪ Only remove the protective wrapping of the contact faces immediately before
installation takes place.
▪ Prevent any damage to the sealing surfaces or O-rings.
ü The notes and steps stated in to have been observed and carried out.
ü The bearings as well as the individual parts have been placed in a clean and level
assembly area.
ü All dismantled parts have been cleaned and checked for wear.
ü Any damaged or worn parts have been replaced by original spare parts.
ü The sealing surfaces have been cleaned.
1. Clean shaft sleeve 523 and touch up any score marks or scratches with a
polishing cloth.
If score marks or scratches are still visible, fit new shaft sleeve 523.
2. Slide shaft sleeve 523 with new gasket 400.75 onto shaft 210.
3. Clean the mating ring location in casing cover 161.
CAUTION
Elastomers in contact with oil/grease
Shaft seal failure!
▷ Use water as assembly lubricant.
▷ Never use oil or grease as assembly lubricant.
4. Carefully insert the mating ring.
Make sure to apply pressure evenly.
5. On variants with a bolted casing cover loosen forcing screws 901.31.
6. Place casing cover 161 into the locating fit of bearing bracket 330.
Etanorm FXV
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