c)
Repeat until bearing is completely clean.
d) Blow dry with clean filtered compressed air.
e) With ball bearings, hold the two races together, but allow the inner race to rotate a few turns
now and then to dislodge the kerosene from the retainer pockets.
f)
When the bearing has been blown dry, oil it immediately with a good grade of clean machine oil
to prevent corrosion or rust.
3.
If there is any question as to the condition of bearings, it is always best to replace them. This may
prevent an unplanned shutdown.
6.1.4 Bearing Removal
CAUTION:
Risk of physical injury from hot bearings. Wear insulated gloves when using a bearing heater.
1.
Ball Bearings
a) A puller such as the one shown below should be used. The puller bar must be "square" with the
end of the shaft at all times in order to keep even pressure on the outer circumference of the
bearing.
Figure 47: Bearing puller
b) The puller screw should be tightened steadily to enable the bearing to slide smoothly off the
shaft.
On some units, the bearing housings slide off the bearings and the puller such as the one shown
below should be used. This type of puller pulls directly against the bearing itself. The puller bar must
be "square" with the end of the shaft at all times and the puller screw should be tightened steadily to
enable the bearings to slide smoothly off the shaft.
6.1 Bearing Maintenance
3175 Installation, Operation and Maintenance Instructions
49
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