c) Lubricate the impeller screw threads and contact surface.
Ensure that all parts are clean.
d) Press the impeller onto the shaft with the impeller screw.
3. Fasten the impeller:
a) Prevent the impeller from rotating by inserting the rod through the pump housing
outlet.
b) Tighten the impeller screw.
If applicable, use the rod.
Tightening torque: 65 Nm (48 ft-lb).
Tighten a further 1/8 turn, 45° after tightening to the correct torque.
Check that the impeller can rotate freely.
4. Adjust the impeller:
a) Measure the distance between the edge of the impeller and the pump housing
cover.
The correct distance should be 0.5-1.5 mm (0.02-0.06 in). Add or remove the
appropriate number of adjusting washers in order to achieve correct distance.
6 Maintenance
54 Flygt 3102 Installation, Operation, and Maintenance Manual
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