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5.4
Check points at Major Service
5
Service instructions
4.
Rotate the bowl spindle by hand by means of the
flat belt. If it does not rotate freely or if a scraping
noise is heard, incorrect height adjustment
or incorrect fitting of the inlet pipe can be the
cause. Remove the parts and readjust.
5.
Finally, fit the safety device.
G0172951
5.4.2
Radial wobble of bowl spindle
The bowl spindle wobble must be measured
if the bowl spindle has been dismantled or if
rough bowl run (vibration) occurs.
NOTE
Spindle wobble will cause rough bowl run. This leads
to vibration and reduces lifetime of ball bearings.
Check the wobble before removing the bowl
spindle.
If the bowl spindle has been dismantled check
the wobble before installing the bowl.
1. Fit a dial indicator in a support and fasten it in
position as illustrated.
2. Remove the water tank from the frame bottom
part for access to the flat belt. Use the flat belt
to turn the spindle.
3. Permissible radial wobble: max. 0,04 mm.
If the spindle wobble is more than the
maximum permitted value, contact Alfa Laval
representatives.
4. Finally fit the water tank to the frame bottom
part.
Incorrect belt tension causes displacement of
the vertical line of the spindle centre, but does
not affect the wobble of the spindle.
G0121211
50
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