6.4.3 Install the impeller, drainage version
1. Prepare the shaft. Polish off any flaws with a fine emery cloth.
The end of the shaft must be clean and free from burrs.
2. Check that the impeller screw is clean and easy to screw into the shaft end.
This is to prevent the shaft from rotating with the impeller screw.
3. Fasten the impeller:
a) Place the washer on the impeller screw.
b) Mount the impeller.
Make sure that the impeller hub disk center is aligned with the slotted shaft end.
c) Tighten the impeller screw.
Tightening torque: 9.3 Nm (6.9 ft-lb)
d) Check that the impeller can rotate freely.
4. Mount the diffuser unit.
6 Maintenance
2008 Ready 8, 8S Installation, Operation, and Maintenance 25
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