28
2005 Doctor Martin Luther King Jr Street
Indianapolis, IN 46202
Rev 07-2021
Prior to removing the top drive
coupling hub from the motor rotor, be
sure to scribe a line with a marking pen
(match mark) on the drive hub location
and the rotor.
Remove the bolts holding the top
drive coupling and lift it off. On larger
motors, the top drive coupling may be of
such size and weight that an overhead
crane and eyebolts (screwed into the
coupling for lifting) will be required to
move the coupling.
On one-piece top shaft construction,
lower the motor slowly, aligning the
axial hole of the hollow shaft with the
top shaft so that there will be no
bumping as the shaft enters and passes
through the motor hollow shaft.
Place the motor mounting bolts into
the holes of the motor end bell. Lower
the motor until it is approximately ¼" to
⅜" away from the discharge flange face.
Orient the motor with the conduit box in
the desired position and the mounting
holes aligned with the mating tapped
holes in the discharge head.
Do not work under a heavy
suspended object unless there is a
positive support under it to stop its
fall in even of sling or hoist failure.
Disregard of this warning could result
in grave personal injury.
At this time, engage the motor
mounting bolts in the tapped holes of the
discharge head. This will help align the
motor register to the discharge register.
Prior to lowering the motor onto the
register, check to make sure no foreign
material has gotten between the motor
and discharge head faces.
When lowering the motor to the
pump, take care not to bump or
scrape against the top shaft
protruding above the discharge head.
This could result in bending of the
shaft.
Lower the motor until the registers
engage and the motor rests firmly on the
discharge head. Tighten the motor
mounting bolts that have already been
engaged.
If the pump has a head shaft just
below the top shaft, only the head shaft
will be installed at this time. The top
shaft will be inserted through the motor
later, after the motor has been tested for
direction of rotation.
Match mark the top drive coupling
relative to the motor rotor. Remove the
bolts holding the top drive coupling, and
lift it off. On larger motors, the top drive
coupling may be of such size and weight
that an overhead crane and eyebolts (to
screw into the top drive coupling) will
be required to move the coupling.
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