Maintenance
3A4586E
15
Models 25C411 - 25C414
Uninstall the Pump
1.
Turn off the motor.
2.
Disconnect the motor from the power source and
detach the ground wire from the lower unit.
3.
Remove the fluid hose from the pump.
4.
Remove the pump from container.
5.
Carry the pump to the bench for service.
Disassemble the Pump
NOTE: If removal of any part requires use of a tool for
gripping, use only non-marring tools.
1.
Remove motor by unthreading the motor nut (2).
2.
Remove the foot (19).
NOTE: This part is reverse threaded. While facing
the bottom of the foot, rotate the foot clockwise to
remove.
3.
Grasp the coupling (4) with one hand and the impel-
ler (18) with the other hand. Unscrew the coupling
or impeller:
NOTE: If the coupling unscrews, capture the two
bearings (5), bearing spacer (6) and u-cup (7) for
re-use when removing the drive shaft from the tube.
4.
Using the remaining item still attached to the drive
shaft, pull the drive shaft out of the tube.
NOTE: The guide sleeve (9) may also come out
when removing the drive shaft. If it does, remove it
from the tube and drive shaft. If it does not come out
now, it will be removed later.
5.
Unscrew the coupling or impeller from the drive
shaft. If it is the coupling, retain the 2 bearings (5),
bearing spacer (6) and u-cup (7) for re-use.
6.
If the guide sleeve (9) did not come out with the
drive shaft, remove it now. It must be removed from
the motor end of the tube because of the flare on
the end of the guide sleeve.
NOTE: If necessary, use a non-marring object
which is at least 12 inches long inserted from the
foot end of the inner tube to push the guide sleeve
out far enough to present a graspable surface.
7.
Remove the pump housing (16).
NOTE: This part is reverse threaded. While facing
the foot end of the tube, rotate the pump housing
clockwise to remove.
8.
Remove the bushing (17) from the pump housing.
NOTE: The exposed end of the bushing is flared. If
necessary, push against the inside end of the bush-
ing to expose a graspable surface.
9.
Using an o-ring tool, remove the two o-rings (15)
from the inner tube.
10. Remove the flange (10).
NOTE: This part is reverse threaded. While facing
from the motor end of the tube, rotate the flange
clockwise to remove.
11. Using a flat-blade screwdriver, remove the snap ring
(3) from the motor nut (2) and remove both from the
flange (10).
12. Clean and inspect all components. Replace any
damaged components.
Moving parts can pinch, cut or amputate fingers and
other body parts. Keep your hands and fingers away
from the pump inlet during operation and whenever the
pump is connected to a power source. Disconnect
power before moving.
