Pump Disassembly:
1. All moving parts are located in the rear sub-assembly of this pump.
Tools required:
a. 1/2 inch open end wrench.
b. 9/16 inch open end wrench.
c. Flat and Phillips head screwdrivers.
2. To remove and repair the motor sub-assembly perform the following procedures.
a. Turn off the pump circuit breaker at the main panel.
b. Drain the pump by removing the drain plugs.
c. Remove the 6 bolts that hold the main pump body (strainer pot/volute) to the rear sub-assembly.
d. GENTLY pull the two pump halves apart, removing the rear sub-assembly.
e. Remove the diffuser.
CAUTION:
Be sure not to scratch or mar the polished seal faces. Seal will leak if faces are damaged.
f.
Hold the impeller securely in place and remove the impeller lock screw by using a Phillips head screwdriver. The screw is
a left-handed thread and loosens in a clockwise direction.
g. Remove the shaft cap located at the back of the motor and hold the shaft secure with a flat-head screwdriver (Century)
or 7/16 inch open-end wrench (Franklin) .
h. To unscrew the impeller from the shaft, twist the impeller counter clockwise.
i.
Remove the four bolts from the seal plate to the motor, using a 9/16 inch wrench.
j.
Place the seal plate face down on a flat surface and tap out the carbon/spring seal.
k. Clean the seal plate, seal housing, and motor shaft.
Pump Reassembly/Seal Replacement; see Figure 4:
1. When installing the replacement ceramic/carbon seal, use
silicone sealant on the metal portion, before pressing into
the seal plate.
2. Before installing the ceramic section of the seal into the
impeller, be sure the impeller is clean. Use a light density
soap and water to clean the seal. Press the seal into the
impeller with your thumbs and wipe off the ceramic and
carbon faces with a clean cloth.
3. Remount the seal plate to the motor.
4. Screw the impeller onto the motor shaft.
5. Screw in the impeller lock screw (counter clockwise to tighten).
6. Remount the diffuser onto the seal plate.
7. Grease the diffuser O-ring.
8. Assemble the motor sub-assembly to the strainer pot-pump body. Do not tighten down any of the bolts until all 6 bolts
are in place and finger tight.
9. Fill the pump with water.
10. Reinstall the pump lid by turning clockwise until hand tight (Do not over tighten with tools).
11. Prime the system; see Priming the Pump.
