Alfa Laval S 821 - Assembly; Centrifugal Clutch Assembly

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6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY
6.5 Assembly
6.5.1 Centrifugal clutch
1 Assembly of the coupling.
G0865641
a Slip the belt pulley over the coupling hub and place them on a firm and level
foundation.
W
A
R
N
I
N
G
!
Disintegration Hazard
If the belt pulley must be renewed, check that the new pulley has the
correct diameter. An incorrect pulley will cause the separator bowl to
run at either an excessive or insufficient speed.
d=283 mm 50 Hz
d=235 mm 60 Hz
b Apply a thin film of oil onto the
external and internal surfaces of the
ball bearings .
o
Mounting tool
c Press the ball bearings down one at a time into the coupling
hub, preferably using a hydraulic press. Place the spacing
ring between them.
N
O
T
E
Never re-fit used ball bearings.
The ball bearings must not be heated as they are
packed with grease and sealed with plastic
membranes.
d Fit the snap rings .
o
N
O
T
E
Remove rust from the
belt pulley using a steel
brush.