Gorman-Rupp Pumps SE1 1/2A3 115V 1P 1483930 and up - Manual (Page 35)

SE SERIES OM−06488
MAINTENANCE AND REPAIR PAGE E − 11
tach a lifting device to the lifting eye of the tool, and
raise the assembly approximately 1 inch (25 mm)
off the work surface. Take care not to damage the
stator end turns.
The motor housing (10) must be heated with a
torch to expand it enough for the stator to be re-
moved. Apply heat evenly to the outside of the mo-
tor housing; excessive heat is not required. When
the motor housing is sufficiently heated, use a soft-
faced mallet to rap alternate edges of the motor
housing, and walk" the stator out. Continue this
process until the stator clears the motor housing.
Take care not to damage the stator end
turns during removal from the motor hous-
ing.
After the stator has been removed, wrap it in clean,
dry rags or other suitable material until reassembly.
The stator must be kept clean and dry. When han-
dling the stator, do not set it on the end windings;
lay it on its side.
Do not attempt to rewind the stator. Wind-
ing tolerances and materials are closely
controlled by the manufacturer, and any
deviation can cause damage or operating
problems. Replace the stator, or return it to
one of The Gorman-Rupp Authorized Sub-
mersible Repair Centers or The Gorman-
Rupp factory, if defective.
MOTOR REASSEMBLY
NOTE
Reuse of old O-rings, gaskets, shaft seal parts will
result in premature leakage or reduce pump per-
formance. It is strongly recommended that new
gaskets and shaft seal assemblies be used during
reassembly (see the parts lists for numbers).
Clean all gasket and O-ring surfaces, completely
removing any old gasket and cement material. In-
spect the sealing surfaces for burrs, nicks and pits
which could cause a poor seal. Replace defective
parts as required.
Thoroughly clean the inside of the motor housing
(10) with fresh solvent. The interior must be dry
and free of dirt or lint.
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.
Stator Installation
NOTE
Stator installation involves heating the motor hous-
ing. This process must be done quickly. Therefore it
is recommended that these steps be performed by
two people to promote efficient installation of the
stator.
Do not unwrap the stator (53) until the motor hous-
ing has been prepared for stator installation. The
stator must be kept clean and dry. When handling
the stator, do not set it on the end windings; lay it on
its side and block it from rolling.
Test the new stator as indicated in Electrical Test-
ing in TROUBLESHOOTING, Section D, to ensure
that no damage has occurred during transit or han-
dling.
NOTE
Remove any drops of varnish from the ends of the
stator before installation to ensure proper stack-up
height when assembled.
Stand the motor housing (10) upright. Position an
expandable tool, such as a split disc, approxi-
mately 2 inches (51 mm) down inside the stator
(opposite the lead wire end), and expand it tightly
and squarely on the I.D. Attach a lifting device to