Alfa Laval LeviMag, Instruction Manual, Page: 31 / 68

5 Maintenance
Assembly drawings with position numbers (#) can be found in section 10.3 Drive unit - WP50 and in section 10.4 Drive unit -
WP81. Tightening torques can be found in section 8.9 Tightening torque for screwed connections.
Step 5
Mount the new O-rings on the new female bearing.
NOTE
Be careful not to scratch the lower O-ring when moving it over
threads on the bearing – the O-ring can be extended a little by
pulling in it (max. 5%) before moving it over the threads.
4307-0050
Step 6
NOTE
Ensure the protection shield is mounted onto the impeller.
Place the female bearing from the downside into the impeller using
the female bearing tool.
4307-0051
Step 7
Tighten the female bearing to a full stop by applying the recommended torque according to section 8.9 Tightening torque
for screwed connections.
CAUTION
Do not over-tighten
Step 8
Remove the female bearing tool and the protection shield.
Step 9
Follow section 3.3 Impeller for installation of the impeller.
CAUTION
Ensure to place the impeller in the tank on the male bearing before mounting the drive unit.
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