Gorman-Rupp Pumps T8A60S-4045H 1514489 and up - Manual (Page 42)

OM-06522 SUPER T SERIES
MAINTENANCE & REPAIR PAGE E - 15
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.
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 (7A) in the bearing
housing bore with the lip positioned as shown in
Figure 4. Press the oil seal into the housing until the
face is just flush with the machined surface on the
inside of 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 bear­
ings to prevent burns.
NOTE
Position the outboard bearing (22) 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.
When installing the bearings onto the
shaft, never press or hit against the outer
race, balls, or ball cage. Press only on the
inner race.
Install the thrust washer (26) and secure the out­
board bearing (22) to the shaft with the bearing re­
taining ring (21).
It is recommended that a sleeve be positioned
against the inboard oil seal (7A) to prevent the lip of
the oil seal from rolling as the shaft and bearings
are installed in the bearing housing. The O.D. of the
sleeve should be just smaller than the bearing
housing bore, while the I.D. of the sleeve should be
just larger than the O.D. of the lip seal area of the
shaft.
With the lip seal sleeve in place, lubricate the lip
seal area of the shaft, and slide the shaft and as­
sembled bearings into the bearing housing until
the retaining ring on the outboard bearing seats
against the bearing housing. Remove the lip seal
sleeve.
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
Position the outboard oil seal (7) on the lubricated
shaft with the lip positioned as shown in Figure 4.