OM-05498
SUPER T SERIES
MAINTENANCE & REPAIR
PAGE E - 10
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 2. Press the oil seal into the housing until the
face is
just flush
with the counterbored surface to
ward the inside of the bearing housing. Inspect for
and remove any sealant shavings that might be re
moved from the O.D. of the oil seal.
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.
NOTE
Position the inboard bearing (25) on the shaft as in
dicated 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 5. Inboard Bearing Positioning
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.
