Gorman-Rupp Pumps SE1 1/2A3 115V 1P 1483930 and up - Manual (Page 34)

OM−06488 SE SERIES
MAINTENANCE AND REPAIR PAGE E − 10
Turn the mounting plate over and remove the hard-
ware (12 and 13) securing the terminals (11) of the
blue stator leads to the centrifugal switch contact
(14). Lift the mounting plate off the motor housing,
using caution to feed the stator leads down
through the grommet (21).
To remove the green ground wire (22), remove the
hardware (24, 25 and 26) securing the terminal
(23) of the green ground wire to the mounting plate
(18).
To remove the overload protector (45), remove the
hardware (46 and 47) securing the protector to the
mounting plate.
Remove the hardware (15, 16 and 17) securing the
centrifugal switch contact to the mounting plate.
NOTE
The centrifugal switch actuator (49) is a press fit
onto the rotor shaft and cannot be removed until the
rotor is removed.
To replace the grommet (21), press it from the
mounting plate.
See Head And Power Cable Installation if no fur-
ther disassembly is required.
Rotor Removal
See PUMP END DISASSEMBLY and remove all
pump end components and Head And Power
Cable Removal and remove the head (27) and
mounting plate (18).
From the impeller end of the shaft, use a block of
wood or soft-faced mallet to tap the rotor, switch
actuator (49) and assembled ball bearings (44 and
55) out of the motor housing and through the stator
(53). Use caution to prevent the rotor (50) from fall-
ing on the stator windings.
Bearing Removal
To prevent damage during removal from
the shaft, it is recommended that bearings
be cleaned and inspected in place. It is
strongly recommended that the bearings
be replaced any time the shaft and rotor
assembly is removed.
Before removing the bearings from the rotor shaft,
clean and inspect the bearings in place as follows.
Clean the bearings thoroughly in fresh cleaning
solvent. Dry the bearings with filtered compressed
air and coat with light oil.
Most cleaning solvents are toxic and
flammable. Use them only in a well ven-
tilated area; free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain-
ers.
Rotate the bearings by hand to check for rough-
ness or binding. If rotation is rough, replace the
bearings.
The bearing tolerances provide a tight press fit
onto the shaft and a snug slip fit into the motor
housing and bearing bore. Replace the shaft and
rotor (as an assembly) or the motor housing if the
proper bearing fit is not achieved.
If replacement is required, use a bearing puller to
remove the ball bearings from the rotor shaft.
Switch Actuator Removal
Remove the snap ring securing the switch actuator
to the shaft. Use a felt tip ink marker to scribe the
location of the actuator on the shaft. Use a suitable
puller to remove the switch actuator from the shaft.
Stator Removal
Do not remove the stator (53) unless it is defective
(open windings, insulation resistance low, or stator
core damaged). If the stator must be removed, re-
move the head as indicated in Head And Power
Cable Removal.
Position an expandable tool, such as a split disc,
approximately 2 inches (51 mm) inside the stator,
and expand it tightly and squarely on the I.D. At-