Gorman-Rupp Pumps SE1 1/2A3A 115V 1P 1483930 and up - Manual (Page 32)

OM−06489 SE SERIES
MAINTENANCE & REPAIR PAGE E − 11
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, and replace defec-
tive 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.
After the motor housing is thoroughly cleaned, po-
sition it on a flat surface with the discharge end
down. Do not unwrap the stator (68) until the motor
housing has been prepared for stator installation.
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 and block it from rolling.
Test the new stator as indicated in Electrical Test-
ing in TROUBLESHOOTING, Section B, 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.
Position an expandable tool, such as a split disc,
approximately 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 de-
vice to the lifting eye of the tool, and carefully lift the
assembly. Take care not to damage the stator end
turns. Slip a sleeve over the stator leads, or tape
them together to protect them during installation.
NOTE
Stator installation involves heating the motor hous-
ing. This process must be done quickly to allow the
stator to slide into the motor housing before the
housing cools.
Heat the motor housing with a torch to expand it
enough for the stator to be installed; when heating
the motor housing, make sure that the stator is
clear to avoid a fire hazard or damage to the wind-
ings. Apply heat evenly to the outside of the hous-
ing; excessive heat is not required.
When the motor housing is sufficiently heated, po-
sition the stator so that the leads are in line with the
terminal opening. Carefully lower the stator into the
motor housing until fully seated against the hous-
ing shoulder. Be careful not to damage the stator
lead insulation during reassembly. If the stator
cocks" in the motor housing, remove it and try
again.
After the stator is fully and squarely seated on the
motor housing shoulder, remove the expandable
disc tool. Untape or remove the protective sleeve
from the stator leads.
Cover the motor housing with a clean, lint-free
cloth while the rotor is being assembled.
Centrifugal Switch Actuator Installation
Press the centrifugal switch actuator (65) on the ro-
tor shaft so that the actuator flange sits just flush
with the snap ring groove. The lower side should