Gorman-Rupp Pumps S4B1-E50 460/3 1396095 and up - Manual (Page 43)

OM-06099 S SERIES PUMPS
PAGE E - 17 MAINTENANCE AND REPAIR
DIRECTION OF
THRUST
PART NUMBER MARKINGS ARE
LOCATED EITHER ON BEARING
O.D. (OFFSET FROM CENTER) OR
ON SIDE FACE OF BEARING. FOR
EITHER TYPE, POSITION BEAR­
ING WITH TEXT AWAY FROM IM­
PELLER.
INSTALLATION OF SKF 5200 AND 5300 SERIES BEARINGS
NOTE:
THIS BEARING IS MANUFACTURED WITH TWO SEALS OR SHIELDS. WHEN INSTALLED ON THE SHAFT, THE MAN­
UFACTURER'S PART NUMBER DESCRIPTION (LOCATED ON SIDE FACE OF BEARING OR BEARING O.D.) MUST BE
LOCATED WITH THE TEXT AWAY FROM THE IMPELLER.
Figure E-4. Bearing Installation
If heating the bearing is not practical, use a suitably
sized sleeve and an arbor (or hydraulic) press to in­
stall the cap and bearing on the shaft.
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 (15) 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 (19) and intermedi­
ate (50), 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 (39), assembled bearings (38
and 43) and bearing cap (44) 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 (48). Use two of the caps­
crews and lockwashers (49) 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.).