8. Assemble the motor sub-assembly to the volute using the P-Bolts (3/8” cap screws). Do not tighten until all
six P-bolts are in place and finger tightened. Tighten all six bolts uniformly and in a cross pattern.
9. Insert both drain plugs and tighten. Install strainer basket and fill the pump with water.
10. Reinstall the lid and quick clamp, and turn it clockwise until snug.
CAUTION
1. The polished and lapped faces of the seal could be damaged if not handled with care.
2. DO NOT RUN THE PUMP DRY. It must be filled with water before it is turned on.
3.
Pump Disassembly Continued
Disassembly and repair of the motor sub-assembly can be made as follows:
1. At the main panel turn off the circuit breaker for the pump.
2. Close all necessary valves on inlet and discharge lines and drain the pump by removing both drain
plugs. It will drain faster if you loosen the lid.
3. Loosen and remove the six 3/8” P-bolts that hold the volute and the brackeet together.
4. Pull the rear sub-assembly away from the volute. (The volute can remain attached to the plumbing.)
5. Loosen and remove the two 3/32” Allen screws that hold the diffuser to the bracket.
6. Remove the set screw from the impeller eye (if it has one). To do this, hold the impeller stationary, and
turn the set screw clockwise (it has a left-handed thread).
7. Hold the motor shaft stationary (by removing the cap on the opposite end of the motor and inserting a
screw driver in the slot, or a wrench on the flats, depending on the motor design) and unscrew the
impeller by turning it counter clockwise.
8. Loosen and remove the four 3/8” M-bolts that hold the bracket to the motor face.
9. If you wish to remove the shaft seal, place the bracket face down on a flat surface and press out the
carbon/spring seal from the back side. Never pry it out from the front. Carefully remove the ceramic
from the back impeller hub with a small straight screw driver.
10. Clean the bracket , seal bore housing, and the motor shaft as necessary.
Pump Assembly
1. To install a new shaft seal, clean or replace the o-ring in the
bore. If there is no o-ring, clean the bore and apply a bead of
100% silicon sealant inside the bore and around the top edge.
2. Press the seal into the bore (without touching or putting pressure
on the delicate carbon face) by pushing on the stainless steel
collar. (A large socket or a pipe nipple can be used).
3. Clean as necessary the impeller hub, and press in the ceramic.
Make sure that it is sitting flat. (The polished white ceramic face
must be showing - Not the rubber boot!)
4. Remount the bracket to the motor. Tighten the four M-Bolts (3/8”
cap screws).
5. Screw the impeller clockwise onto the motor shaft (while holding the motor shaft stationary) until it makes
firm contact. Screw in the impeller set screw (if it has one), with its gasket in place, (counter-clockwise to
tighten).
6. Mount the diffuser onto the bracket. Make sure the plastic pins fit into the holes in the bracket, then tighten
both Allen head screws.
7. Make sure the diffuser O-ring and bracket gasket are clean and properly seated.
Set Screw
with Gasket
Impeller
Seal
Bracket Gasket
Bracket
Motor
P-Bolt
