Fill with oil
1. Replace the oil screw O-ring.
2. Put one of the oil screws back and tighten it.
3. Turn the pump so that the oil hole faces upwards and fill with new oil.
Quantity: 5.1 L (5.4 qt.)
4. Put the oil screw back and tighten it.
Tightening torque: 10–20 Nm (7.4–15 ft-lbs)
Replace the impeller
Remove the impeller
WARNING:
A worn impeller and/or pump housing can have very sharp edges. Wear protective gloves.
1. Lay the pump on its side.
2. Remove the strainer:
a) Remove the nuts.
b) Remove the strainer.
3. Remove the diffuser:
a) Remove the nuts.
b) Remove the washers.
c) Remove the diffuser.
d) Remove the O-ring.
4. Remove the impeller:
a) Remove the impeller screw.
b) Remove the washer.
c) Pull off the impeller.
Use an impeller puller or pry off carefully with two strong screwdrivers or bars.
Install the impeller
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) Clean and oil all sealing surfaces and O-rings.
Maintenance
28 Flygt 2250 Installation, Operation, and Maintenance Manual
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