10
BE536 (12-09-19)
MAINTENANCE
INSTALLING NEW SEAL
Gaskets and o-rings are not interchangeable per models. Make sure to
install the type of gasket or o-ring you removed.
1. Clean seal cavity in seal plate.
2. Sparingly wet outer edge of rubber cup on ceramic seat with liquid
soap.
3. Put clean cardboard washer on seal face. The ceramic seal’s
polished face should be facing up. Firmly and squarely, press
ceramic seal into cavity using only hand pressure (Figure 15).
4. If seal will not seat correctly:
• Remove seal, placing polished side up on bench. Re-clean
cavity and install as outlined in previous step.
• If seal still does not seat properly after re-cleaning cavity,
place a cardboard washer over polished seal face and
carefully press into place using a piece of standard 3/4 inch
pipe as a press being careful not to scratch seal face.
5. Dispose of cardboard washer and recheck seal face to be sure it is
free of dirt, foreign particles, scratches and grease.
6. Inspect shaft to be sure it is free of nicks and scratches.
7. Reassemble pump body half to motor flange. BE SURE it is right
side up.
8. Apply liquid soap sparingly (one drop is sufficient) to inside
diameter of rotating seal member.
9. Slide rotating seal member (carbon face first) onto shaft until
rubber drive ring hits shaft shoulder.
DO NOT nick or scratch carbon face of seal when passing it over
threaded shaft end or shaft shoulder. The carbon surface must
remain clean or short seal life will result (Figure 16).
10. Hold motor shaft with 7/16” open end wrench on shaft flats and
screw impeller onto shaft. Be sure you do not touch capacitor
terminals with body or any metal object. Tightening impeller will
automatically locate seal in correct position (Figure 12).
11. Replace impeller screw (if used) by turning counterclockwise (left-
hand thread) into end of shaft.
12. Remount diffuser on seal plate with two screws.
13. Follow instructions under “Pump Reassembly.”
PUMP REASSEMBLY
1. Clean gasket surfaces on pump body and seal plate. Install new
gasket.
2. Slide motor/seal plate assembly into pump body. Secure with
capscrews.
3. Replace base mounting bolts.
4. Replace motor wiring and close draincock.
5. Follow priming procedure in the “Priming The Pump” section of this
manual.
6. Check for leaks.
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