WDM PI Operation Manual page 24

PI Operation Manual
The use of a crane with a chain or sling to lift the motor (driver) is suggested.
10. Exercise care and remove mechanical seal as follows:
a. Loosen and remove the shaft screw from the upper part of the coupling side.
b. Remove the washer from the shaft.
c. Remove the rotating part of the mechanical seal, with its setscrews.
d. Remove the adapter's screws and washers.
e. Draw out the adapter from the shaft.
f. Remove the gasket that was used with the adapter.
g. Draw out the stationary part of the mechanical seal.
h. Remove the gasket that was used with the stationary part of the mechanical seal.
Note: If no further maintenance beyond that of Outside Balanced Mechanical Seal is
required, proceed to Section 6.3 Reassembly, step 12.
11. Unscrew the adapter from the casing. First, remove the screws and washers and then remove
the adapter.
12. Remove the gasket from the adapter.
13. Remove the bushing from the adapter.
14. Exercise care and remove the shaft-impeller assembly from the casing.
Avoid bumping the impeller with the sidewalls of the casing.
15. To remove the impeller, first remove the impeller screw, lockwasher and finally the key.
Do not heat the impeller.
Impeller nut is a right hand thread.
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