b) Turn the adjustment screw until C is reached.
6. Fasten the impeller:
a) Fit the sleeve, impeller, greased washer with a greased impeller screw.
b) Tighten the impeller screw.
For tightening torque, see Torque values (page 38).
c) Tighten it further 1/8 turn (45°).
7. If applicable, check that the clearance between the impeller and the insert ring is
maximum 1 mm (0.04 in.) radial. If not, send the pump for service.
The insert ring is pressed into the seal housing cover.
Maintenance
Flygt 3153 Installation, Operation, and Maintenance Manual 59
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