22
Pump Disassembly (Continued)
9.To unscrew the impeller from the shaft, twist the impeller counterclockwise.
10.Remove the rotating portion of the mechanical seal from the impeller.
11.Remove the four bolts from the seal plate to the motor, using a 9/16 inch wrench.
12.Place the seal plate face down on a flat surface and tap out the carbon spring seat.
13.Clean the seal plate, seal housing, and the motor shaft.
GASKET
MOTOR
BOLT (4x)
SEAL
SET SCREW
MOTOR
BOLT (2x)
IMPELLER
SEAL PLATE
LOCK SCREW
LOCK SCREW SEAL
Pump Reassembly/Seal Replacement
1.When installing the replacement shaft seal, use silicone sealant on the metal portion before pressing into the seal plate as shown.
2.Before installing the rotating portion of the seal into the impeller, be sure the impeller is clean. Use a light density soap and water to lubricate the inside of 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.Grease the motor shaft thread and screw impeller onto the motor shaft.
5.Screw in the impeller lock screw (counterclockwise to tighten).
6.Remount the diffuser onto the seal plate. Make sure the plastic pins and holding screw inserts are aligned.
7.Grease the diffuser
8.Grease the bolt threads, assemble the motor subassembly to the strainer
9.Reconnect the
10.Fill the pump with water.
11.Reinstall the pump lid and plastic clamp, see page 15 for details.
12.Prime the pump, see page 7.
Shaft Seal Replacement
The Shaft Seal consists primarily of two parts, a rotating member and a ceramic seal. The pump requires little or no service other than reasonable care, however, a shaft seal may occasionally become damaged and must be replaced.
Note: The polished and lapped faces of the seal could be damaged if not handled with care.