Replacing the impeller
Removing the impeller
WARNING. Worn impellers often have very sharp edges.
1.
Remove bolts and lift the motor section of the pump casing.
2.
Lay the motor section on its side.
3.
Remove the impeller screw.
4.
Pull off the impeller. (Use impeller puller.)
Installing the impeller
1.
Make sure that the end of the shaft is clean and free of burrs. Polish off any flaws with fine emery cloth.
2.
Clean and oil all sealing surfaces and O-rings.
Check:
-
that the key is seated in the keyway on the shaft (3127).
-
that the conical sleeve is seated in the impeller hub (3102).
3.
Push the impeller onto the shaft.
4.
Place washer on the impeller screw.
5.
Tighten the impeller screw.
Installing the impeller, 3102 LT and LL version
Check that the whole sleeve is seated inside the impeller hub.
Push the impeller onto the shaft only so far as to allow the screw and washer to be screwed onto the shaft end.
Press the impeller onto the shaft with the impeller screw and tighten to the right torque.
Check that the impeller can be rotated by hand.
Fit the motor section to the pump casing. Make sure that the pump casing has the right orientation.
Don’t forget the O-ring.
Replacing the impeller on HS 3127
Removing the impeller (HS 3127)
WARNING. Worn impellers often have very sharp edges.
1.
Lay the pump on its side.
2.
Remove the nuts.
3.
Remove the lower diffuser.
4.
Remove the impeller screw.
5.
Pull off the impeller by screwing a screw into the threaded washer.
Fitting the impeller (HS 3127)
Make sure that the end of the shaft is clean and free of burrs. Polish off any flaws.
1.
Grease the end of the shaft and impeller hub.
2.
Press the impeller onto the shaft with the impeller screw.
3.
Tighten the impeller screw.
Adjusting the impeller (HS 3127)
1.
Screw the adjusting nuts down toward the bottom of the studs.
2.
Press the lower diffuser against the impeller.
3.
Screw the adjusting nuts so that they lie flush against the lower diffuser.
