3. Make sure that the shaft keys are in
place on the shaft. If they are not,
squeeze them in place now with slip
joint pliers. Do not tap them or hit
them with a hammer; you could
bend the shaft (see Figure 6). When
the keys are correctly installed, the
adapter will pass over the keys with-
out interference.
4. Carefully slide the adapter over the
shaft (see Figure 7). Do not damage
the shaft sealing surface; it is highly
polished and any slight scratches or
nicks will ruin it.
5. Using the alignment marks made
before disassembly, line up the
adapter with the motor and bolt the
adapter in place. Tighten the cap
screws evenly.
6. Push the shaft seal and seal spring
onto the shaft, after making sure
that the seal faces and shaft are
clean. Take care that the shaft
shoulder does not damage the
carbon seal face. Follow the seal
spring with the spring holder; com-
press the spring and give the spring
holder a quarter turn to lock it under
the first shaft key (see Figure 8).
7. Slide the first impeller onto the
shaft; follow it with the impeller
spacer. Twist the impeller on the
shaft to make sure that the shaft
key is still in place and the impeller
is locked to the shaft (the shaft
should turn with the impeller).
8. Install a new volute gasket, lining up
the bolt holes with the bolt holes in
the adapter. Make sure the gasket
is right side up so that the water
passage holes line up with the
water passages in the volutes.
9. Install the intermediate volute, align-
ing it with the mark made before
disassembly. Use the long cap
screws to check this alignment. It
cannot be stressed too strongly that
all bolt holes and water passages of
all gaskets and volutes MUST line
up with each other, or the pump will
not be assembled correctly.
10. Make sure the second shaft key is
in place and install the second
impeller. Twist the impeller to make
sure that the shaft key is still in
place. Hold the motor shaft with
slip-joint pliers or vice-grips and
install and tighten the impeller lock-
nut. Tightening the lock nut auto-
matically spaces the impeller cor-
rectly. Do not overtighten.
11. Install the base volute gasket. Make
sure the gasket is right side up so
that the water passage holes line up
with the water passages in the
volutes. Install the base volute,
using the alignment marks made
before disassembly. Make sure that
the pump discharge will correctly
meet the piping when the pump is
reinstalled.
12. Insert the four base capscrews and
tighten evenly (see Figure 9). These
should be easy to install if every-
thing is correctly aligned. If not,
don’t force them; go back over your
work and find and correct the mis-
alignment.
13. Reinstall the pressure switch barb
fitting and pressure tube.
14. Reinstall the pump on the adapter
flange (use a new gasket) and
reconnect the wiring and grounding.
Pump is now ready for operation.
Use pliers –
with care –
no hammers.
Figure 6
Align
Marks
Figure 7
Figure 8
Make sure
all marks
line up.
Bolts should
be easy to
insert.
Figure 9
INSTALLATION OF NEW SEAL (continued)
2
For Use With:
Flotec
FP4432
Craftsman
2532 Series
Seal and Gasket Kit
No. 1650
Overhaul Kit
No. 1657
