
30
Inspected 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 (7) in the bearing
housing bore with the lip positioned as
shown in figure 11, page 23. Press the oil seal into the housing until the face is just flush
with the machined surface on the housing.
NOTE:
Position the inboard bearing (7) on the shaft with the shielded side
toward the impeller end of the shaft. Position the outboard bearing (22) on the
shaft with the integral retaining ring on the bearing O .D. toward the drive end
of the shaft.
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. Bearings 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
thoroughly
filtered.
Heat the bearings to a uniform temperature no
higher than
120º C, and slide the
bearings onto the shaft, one at a time, until they are fully seated. This should be done
quickly, in one continuous motion, to prevent the bearings from cooling and sticking
on 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 suitable sized sleeve and a press to reposition the bearings against
the shaft shoulders.
If heating the bearings is not practical, use a suitable sized sleeve and an arbor (or
hydraulic) press to install the bearings on the shaft.
Most cleaning solvents are toxic and flammable. Use them only in a
well-ventilated area free from excessive heat, sparks, and flame.
Read and follow all precautions printed on solvent containers.
WARNING!
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 bearings are
removed.
CAUTION!
When installing the bearings onto the shaft,
never
press or hit against
the outer race, ball, or ball cage. Press
only
on the inner race.
CAUTION!
Secure the outboard bearing on the shaft with the bearing retaining ring (18).
Slide the shaft and assembled bearings into the bearing housing until the retaining
ring on the outboard bearing seats against the bearing housing.
When installing the shaft and bearings into the bearing bore, push
against the outer race.
Never
hit the balls or ball cage.
CAUTION!