Pump Disassembly
1. Shut off the power to the motor before
disconnecting any electrical wiring from
the back of the motor.
2. Close all necessary valves on suction
and/or discharge lines and drain the
pump by removing the drain plugs.
3. Disassemble the volute from the bracket
motor assembly by removing the seven
¼ x 2
3
/
4
cap screws. (The volute can
remain attached to the plumbing).
Pull the motor/pump bracket away
from the volute.
4. Remove the cap covering the back end
of the motor shaft and with a large
screwdriver or wrench, prevent shaft rotation while unscrewing the impeller counterclockwise (as viewed from the pump end).
5. Remove the ceramic piece from the impeller hub.
6. Detach the bracket from the motor by removing the four
3
/
8
" cap screws, and slide it forward, away from the motor.
7. Remove the carbon-graphite seal from the bracket by pressing it out from the back. Do not dig it out from the front!
(A large socket or pipe nipple can be used.)
Pump Assembly
1. Check all pump parts and clean as needed.
2. If the motor shaft has corrosion build up, use emery cloth to clean it.
3. Install the O-ring into the O-ring gland in the bracket bore.
4. Press the carbon seal head into the bracket bore. CAUTION! Press only on the seal collar, NOT ON THE DELICATE CARBON FACE!
DO NOT TOUCH THE CARBON SEAL FACE!
5. Insert the slinger (rubber washer), if you are using one, onto the motor shaft. Note: Never use a slinger in conjunction
with a PVC shaft sleeve for salt water.
6. Mount the bracket onto the motor C-face using four
3
/
8
" cap screws and tighten them snugly.
7. Press the ceramic into the impeller hub. It helps to moisten the rubber boot with water first. The ceramic MUST SIT FLAT. If one side is higher
than the other, the seal will leak! The smooth face must be up and exposed. This is facilitated by placing the ceramic face down on a bench and
pressing the impeller down over it.
8. Screw the impeller clockwise onto the motor shaft and tighten. You can hold the shaft stationary at the opposite end of the motor with a large
screwdriver or wrench.
9. Place the large O-ring in the groove in the volute. Note: It is easiest to lay the volute, suction side down, place the O-ring in the groove, and lower
the bracket/motor assembly down onto the volute. (So the O-ring doesn’t pop out.)
10. Install the seven ¼" x 2
3
/
4
" cap screws with washers and tighten in a cross pattern until they are reasonably snug. (Do not overtighten).
11. Place the small O-rings onto both drain plugs, and screw them into the ¼" holes in the volute and bracket.
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.
PUMP DISASSEMBLY AND ASSEMBLY
