Pentair Myers 4MSW Serie Manual De Instalación Y Operación página 4

6. Using two screwdrivers, remove the outer seal spring
and seal face from the shaft (Figure 5).
7. Remove the socket head cap screws and remove the
back plate, bringing the stationary half of the seal with
the plate (Figure 6). With a screwdriver, tap the seal half
out of the plate.
Figure 6
8. Stand the pump right side up on a cradle that allows it to
sit solidly with the shaft projecting down. Open the termi-
nal cover (tap with a lead hammer) and check for water
(Figure 7).
9. Wipe all the moisture out of the terminal assembly
before removing the board and gasket. Disconnect the
wiring on the top of the board; remove the terminal
assembly board, gasket, and O-Ring. Disconnect the
wiring on the bottom of the board.
10. Using the wire port from the motor to the terminal compart-
ment as a pour spout, lay the pump on its side and pour
the oil out of motor (Figure 8). Check for water in the oil. Be
prepared to hoist the lower end of pump to get all possible
oil out of the motor before removing the motor cover.
Figure 7
11. Remove the C-ring retainer. With two screwdrivers,
remove the inner seal spring and the inner seal face.
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Figure 8
12. With the pump on its side, remove the six bolts holding
the seal plate to the motor housing. Separate the motor
housing from the seal plate by about 1" (tap with lead
hammer if necessary) and disconnect the red lead from
leak detector probe (Figure 9).
Disconnect
Leak Probe
Lead Wire
Figure 9
13. Remove the seal plate, shaft, rotor, and bearings from
the motor housing.
14. Remove the thrust bearing retainer from the seal plate
(Figure 10). Remove the seal plate from shaft.
15. Stand the motor housing upright on a padded surface.
Remove the stator bolt and the stator should drop out of
the motor housing. If it does not, carefully coax it out of
the housing.
16. Remove the leak detector probe from the seal plate.
Clean all of the moisture out of the probe cavity and off
of the probe before reassembly.
17. With a screw driver, tap the stationary half of seal out of
the seal plate.
18. If replacing the motor, press the top bearing off of the
shaft.
19. If replacing the bearings, press both of the old bearings
off of shaft.
REASSEMBLY
1. Press the bearings onto the shaft.
2. Install the seal half in the seal plate.
3. Install the shaft in the seal plate.
4. Install the thrust bearing retainer.
5. Install the leak detector probe assembly (make sure
O-Ring is in place) in the seal plate.
6. Thread the stator leads through the port in the motor
housing and reinstall the stator; tighten the stator bolt
and the sealing washer to 15 ft-lbs torque.
253 10
Figure 11
4
255 1093
Figure 10
Tighten bolt and
sealing washer to
15 Ft-lbs. torque.
115 0993
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