18
2005 Doctor Martin Luther King Jr Street
Indianapolis, IN 46202
Rev 07-2021
Hoist the column section over the
pump. Take care not to let the column,
tube, or shaft sections drag or bump
against any object.
If the shaft is damaged or bent, it
must be repaired or replaced before it is
installed in the pump.
Position the column/tube/shaft
assembly vertically over the bowl unit.
Do not work under a heavy
suspended object unless there is a
positive support under it to stop its
fall in the event of sling or hoist
failure. Disregard of this warning
could result in grave personal injury.
Wipe the bowl unit upper flange and
column lower flange with a clean rag.
Clean off any nicks or burrs. Place a
gasket or O-ring on top of the bowl unit
flange, or if gaskets or O-rings are not
required, coat both flanges with sealant,
taking care that no loose brush bristles
are left on the coated surfaces.
Carefully lower the column section
until the lower end of the shaft section
stabs into the coupling, resting squarely
on the impeller shaft coupling. Untie the
tail rope from the shaft section. Clean
the shaft section threads and lubricate
them. Start the shaft section into the
coupling by hand. Clean threads will
allow the shaft to screw in all the way by
hand. Then use a pair of pipe wrenches
to screw the joint tight, butting the
bottom of the shaft section firmly against
the top of the impeller shaft (see Fig. 8).
Shaft threads are left-hand, and
must be clean and de-burred!
File smooth any burrs which may have
been raised on the shaft section, and
wipe off metal chips with a clean rag.
Remove the apron and rag that had been
protecting the top of the bowl unit.
Carefully lower the column section
until the lower end of the tube rests
squarely on the bearing. Untie the tail
rope or remove the clamp. Clean the
threads on the outside of the bearing and
lubricate them with engine oil.
Start the tube section thread over the
bearing thread by hand; then use a pair
of pipe wrenches or chain tongs to screw
the joint tight, butting the end of the tube
firmly against the upper end of the top
bearing adaptor (see Fig. 9).
Clean the threads at the lower end of
the column section and lubricate them
with thread compound or engine oil.
Lower the column section and engage it
with the coupling by hand. Continue
tightening joint using a pair of pipe
wrenches or chain tongs, until the end of
the column section is butted tightly
against the tube adaptor on top of the
bowl unit.
Engage the two flanges, and install
bolts in all the holes not obstructed by
the box clamp (see Fig. 12).
Tighten the bolts gradually in
Figure 12. Bolting column section flanges.
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