8.4 Bearing removal
1.
Ball Bearings
A puller such as the one shown in Fig. 40 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. The puller screw should be tightened steadily to enable the bearing to slide smoothly off
the shaft. Do not damage the end of the shaft.
Figure 40:
On some units, the bearing housings slide off the bearings and the puller such as the one shown
in Fig. 41 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. Do not damage the end of the
shaft.
Figure 41:
2.
Sleeve Bearings
After the bearing shells have been removed, a bearing puller, such as shown in Fig. 41 should be
used to remove the ball bearing. 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 bearing to slide smoothly
off the shaft. Do not damage the end of the shaft.
After the bearings have been removed, they should be wrapped in dean paper or cloth to prevent
contamination. Other parts which surround the bearings, such as bearing housings, should be
kept clean in the same manner.
8.5 Ball bearing installation
A film of clean machine oil should be applied to the bearing seat on the shaft. The bearing should be
started on the shaft by tapping the inner race with a hammer or mallet. Do not use a lead mall. The
8.4 Bearing removal
3107 Installation, Operation and Maintenance Instructions
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