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complete assembly from the suction flange. Service the check valve as required.
ROTATING ASSEMBLY
The power source must be removed prior to removing the rotating assembly. Drain the oil in the seal cavity by
removing the seal cavity drain plug. Clean and replace the drain plug after draining seal cavity of oil. Remove the
four nuts on the studs of the volute and use the two jack screws to remove the rotating assembly from the volute.
Separate the rotating assembly by pulling straight away from the pump casing.
Impeller
With the rotating assembly removed from the pump casing, remove the impeller lock screw and unscrew the impeller
from the shaft. The impeller was installed at the factory using Loctite® and so may be fairly difficult to unscrew. A
propane torch can be used to ease loosening the screw if necessary. Use the impeller removal tool to fix the shaft
from rotating, and use a metal bar or piece of wood to rotate the impeller counter-clockwise until it is free of the shaft.
It may be necessary to pound the bar with a hammer to loosen the impeller. Inspect the impeller and replace it if
necessary. Use caution when removing the impeller.
MECHANICAL SEAL
With the rotating assembly out of the volute and the impeller removed, slide the shaft sleeve and rotating portion of
Check Valve Pin
Pivot Support
Check Valve Assembly
DRAIN PLUG ILLUSTRATION
Bearing
Oil Drain
Seal
Oil Drain
Impact
Impeller
Impeller Washer
Impeller Screw
