8
PUMP SERVICE
Pump should only be serviced by qualified personnel.
To avoid dangerous or fatal electrical shock hazard, disconnect power
to motor before working on pump or motor!
No lubrication or regular maintenance are needed.
If shaft seal is damaged, repair as follows:
Removing Old Seal:
1. Disconnect power to pump motor.
2. Drain tub and pump; disconnect unions to allow access to pump.
3. Remove six bolts holding front plate to seal plate; remove front plate.
4. Remove shaft cover or motor canopy; using screwdriver in slot on motor
end of shaft or wrench on flats of shaft extension, hold pump shaft and un-
screw impeller from shaft (turn counterclockwise). Rotating half of seal will
come off with impeller.
NOTICE:
Pump may have spacing shims inside impeller sleeve (against
shaft shoulder).
Do not lose or damage shims!
If impeller needs replace-
ment or if shims are lost, see authorized service representative.
5. Carefully remove rotating part of seal from impeller sleeve by pulling and
turning on sealing washer and spring (Figure 2). Do not damage impeller
surface where drive ring seats and seals.
6. Carefully remove four motor throughbolts from seal plate (Figure 3); remove
seal plate and use a screwdriver to tap ceramic seat out from the rear
(Figure 4). Do not damage seal cavity in seal plate.
7. Clean cavity from which seal was removed and clean motor shaft.
Installing New Seal:
1. Ceramic seat must be clean and free of dirt, grease, dust, etc. Wet rubber
cup gasket of ceramic seat with
small
amount of liquid detergent; press into
cavity firmly and squarely with finger pressure (Figure 5).
2. If ceramic seat will not locate properly, remove it, place
face up
on bench,
and reclean cavity. Ceramic seat should now locate.
3. Seal must be free of dirt, grease, grit, scratches or chips; be sure impeller
sleeve is clean. Slide seal assembly, rubber drive ring first, onto impeller
sleeve until drive ring bottoms on impeller back shroud.
4. Slip slinger over shaft; remount seal plate. Torque throughbolts to 25 inch-
lbs. (29 cm-kg).
5. Impeller shim(s) (if used) go over threaded shaft end against shaft shoulder.
Be sure to replace all shims for correct impeller spacing. Screw impeller
onto shaft until it seats against shaft shoulder. Work slinger over end of im-
peller sleeve so it rides on sleeve (Figure 6).
6. Remount front plate; using a criscross pattern, torque bolts to 30 inch-lbs.
(34.6 cm-kg). Reconnect unions; tighten hand tight only.
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Summary of Contents for JTACL
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