Gorman-Rupp Pumps S4A1-E25 460/3 1396155 and up - Manual (Page 43)

OM-06098 S SERIES PUMPS
PAGE E - 17 MAINTENANCE AND REPAIR
When installing the bearing onto the shaft,
never press or hit against the outer race,
balls, or ball cage. Press only on the inner
race.
After the bearings have been installed and allowed
to cool, check to ensure that they have not moved
out of position in shrinking. If movement has oc­
curred, use a suitably sized sleeve and a press to
reposition the bearings. Make certain that they are
seated squarely against the shaft shoulders.
Secure the gasket (45) to the cap with a light coat­
ing of gasket adhesive.
Rotor And Intermediate Reassembly
(Figure E-1)
Use fresh solvent to clean all gasket and O‐ring
surfaces of the motor housing (16) and intermedi­
ate (51), completely removing any old gasket and
cement material. Inspect the sealing surfaces for
burrs, nicks and pits which could cause a poor
seal. Repair or replace as require.
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.
Position the rotor (40), assembled bearings (15
and 18) and bearing cap (43) on a work surface
with the impeller end up, and use blocks to secure
it in this position.
To ease alignment of the bearing cap and inter­
mediate, install two long studs, finger‐tight only,
180
_ apart in the bearing cap mounting holes.
Using a three‐leg sling and lifting eyes in the inter­
mediate flange holes, carefully lower the intermedi­
ate over the shaft and lower bearing, guiding the
studs in the bearing cap through the holes in the
intermediate as it is lowered into place.
Apply `Never‐Seez' or equivalent compound to the
threads of the capscrews (49). Use two of the caps­
crews and lockwashers (50) to draw the intermedi­
ate and bearing cap together. Remove the studs
temporarily installed in the bearing cap and install
the remaining two capscrews and lockwashers;
torque the capscrews evenly in a cross‐sequence
to 20 ft. lbs. (240 in. lbs. or 2,8 m. kg.).
Refer to PUMP END REASSEMBLY, and reas­
semble the pump end components.
Terminal Housing And Power Cable
Reassembly And Installation
(Figure E-2)
The electrical power used to operate
this pump is high enough to cause inju­
ry or death. Make certain that the control
handle on the control box is in the OFF
position and locked out, or that the pow­
er supply to the control box has been
otherwise cut off and locked out, before
attempting to open or service the pump
assembly. Tag electrical circuits to pre­
vent accidental startup. Obtain the ser­
vices of a qualified electrician, and refer
to the wiring diagram(s) in INSTALLA­
TION, Section B, to make electrical con­
nections.
Clean the exterior of the power cable with warm
water and mild detergent. Check for obvious physi­
cal damage. Check the cable for continuity and in­
sulation resistance (see Electrical Testing in
TROUBLESHOOTING). Do not attempt repairs
except to cut off either end of the cable; splicing is
not recommended. Reinstall any wire tags or ter­
minals which may have been removed.
Never attempt to alter the length or re­
pair any power cable with a splice. The