Gorman-Rupp Pumps T10A3S-B /FM,/WW - Manual (Page 31)

OM-05290 SUPER T SERIES
MAINTENANCE & REPAIR PAGE E - 10
sparks, and flame. Read and follow all
precautions printed on solvent contain­
ers.
Inspect the shaft for distortion, nicks or scratches,
or for thread damage on the impeller end. Dress
small nicks and burrs with a fine file or emery cloth.
Replace the shaft if defective.
Position the inboard oil seal (22) in the bearing
housing bore with the lip positioned as shown in
Figure E‐2. Press the oil seal into the housing until
the face is just flush with the machined surface in­
side the housing.
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 bear­
ings are removed.
The bearings may be heated to ease installation.
An induction heater, hot oil bath, electric oven, or
hot plate may be used to heat the bearings. Bear­
ings should never be heated with a direct flame or
directly on a hot plate.
NOTE
If a hot oil bath is used to heat the bearings, both the
oil and the container must be absolutely clean. If
the oil has been previously used, it must be thor­
oughly filtered.
Heat the bearings to a uniform temperature no
higher than 250
_F (120_C), and slide the bearings
onto the shaft, one at a time, until they are fully
seated. This should be done quickly, in one con­
tinuous motion, to prevent the bearings from cool­
ing and sticking on the shaft.
Use caution when handling hot bearings to pre­
vent burns.
NOTE
Position the inboard bearing (8) on the shaft as indi­
cated by the following illustration.
INSTALLATION OF NEW DEPARTURE OR
BCA/FEDERAL MOGAL 5300W SERIES BEARINGS
(OPEN OR ENCLOSED IMPELLERS)
INSTALLATION OF MRC/SKF 5300M OR
FAFNIR 5300W SERIES BEARINGS
(OPEN OR ENCLOSED IMPELLERS)
LOADING
DIRECTION OF
THRUST
BALL LOADING
GROOVE POSITIONED
AWAY FROM IMPELLER
GROOVE
DIRECTION OF
THRUST
LOADING
BALL LOADING
GROOVE POSITIONED
TOWARD IMPELLER
GROOVE
Figure E‐5. Inboard Bearing Positioning
NOTE
Position the outboard bearing (20) on the shaft with
the retaining ring in the outer race toward the drive
end of the shaft.
After the bearings have been installed and allowed
to cool, check to ensure that they have not moved
away from the shaft shoulders in shrinking. If
movement has occurred, use a suitably sized
sleeve and a press to reposition the bearings
against the shaft shoulders.
If heating the bearings is not practical, use a suit­
ably sized sleeve, and an arbor (or hydraulic) press
to install the bearings on the shaft.