c) Pull off the impeller.
Use an impeller puller or pry off carefully with two strong screwdrivers or bars.
4. If the diffuser is to be replaced, the oil has to be drained first.
5. Remove the studs and the diffuser.
Install the impeller
Make sure that the upper diffuser is properly mounted before you begin.
1. Prepare the shaft:
a) Polish off any flaws with a fine emery cloth.
The end of the shaft must be clean and free from burrs.
b) Grease the end of the shaft.
c) Insert the key in the keyway of the shaft.
d) Fit an appropriate number of adjusting washers on the shaft.
2. Install the impeller:
a) Fit the impeller onto the shaft.
b) Lock the impeller to prevent rotation.
Use pliers, a screwdriver, or similar.
c) Tighten the impeller nut.
Tightening torque: 60 Nm (44 ft-lbs).
Maintenance
32 Flygt 2125 Installation, Operation, and Maintenance Manual
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