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MAINTENANCE
9.
Install the intermediate
volute, aligning
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 assem-
bled correctly.
10. Make sure the second
shaft key is in place and in-
stall 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
locknut.
Tightening
the lock nut automatically
spaces the im-
peller correctly.
Do not overtighten.
11. Install the base volute gasket. Make sure the gasket
is right side up so that the waterpassage
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
dis-
charge will correctly
_ing
when
the
pump
is reinstalled.
12. Insert the four base capscrews
and tighten
evenly
(see Figure 26). These should be easy to install if ev-
erything
is correctly
aligned.
If not, don't force
them; go back over your
work and find
and cor-
rect the misalignment.
Bolts should
be easy to
insert.
Make sure
all marks
line up.
Figure 26
13. Reinstall the pressure
switch
barb fitting and pres-
sure 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.
14
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