Pentair Pool Products Delta D2CX20-21 Installation & Service Manual With Parts List page 13

Fig. 32
Fig. 33
Fig.34
23833A596
REPLACING UPPER SEAL
To replace upper seal it is necessary to completely
dismantle the pump. Usually if upper seal is out, the
motor stator will be ruined with water, so it will also be
necessary to be replaced.
1. Remove oil fill plugs slowly and drain oil from
motor and seal chamber. See Figures 29, 30 and
31.
2. Remove motor end cap screws and thread into
tapped back-off holes to force cap from motor
housing. See Figure 32
3. Lift cap and remove lead from ground screw. See
Figure 33
4. Cut off all motor leads ¾" down from the connec-
tor on the stator side, this way the cap and cord
assembly and the connectors can be checked for
continuity. See Figures 34 and 35.
5. Remove socket type flat head screws from
bearing cap and thread into tapped back-off holes
to force cap from housing. See Figure 36.
6. Remove bolts from motor stator housing and lift
off casting. Please Note: Bearing housing
contains two finger spring washers which may fall
out of casting when removed. The red and the
orange seal failure wires will pull out of hole in
stator. See Figure 37.
7. The rotor is now exposed and the red and orange
seal failure wires are exposed. Rotor can now be
held for removing grinder impeller and pump
impeller as described before.
8. To remove upper seal use snap ring pliers and
remove snap ring that holds upper seal in place.
See Figure 38.
9. After snap ring is removed, bump on end of shaft
with plastic hammer to force shaft through upper
seal and to push lower ball bearing from housing.
See Figure 39.
10. Push old seal out of housing. Clean thoroughly
and press in new seal seat as described in the
first section steps 8 thru 14.
11. Replace ball bearings if worn or rusted from water
being in motor.
12. Use arbor press to push off bearings. Use flat
steel bars to get under bearing. See Figure 40.
13. In replacing bearings always press on inner face
of bearing.
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