GENERAL INFORMATION
T
,
I
,
19
l.
If using a puller to remove a bearing on a shaft, care
must be taken so that shaft damage does not occur. Al-
ways place a piece
of
metal between the end
of
the shaft
and the puller screw. In addition. place the puller arms
next to the inner bearing race. See
Figure
SO
.
2.
If
using a hammer to remove a bearing on a shaft. do
not strike the hamme r directly against the shaft. Instead.
use a brass or alum inum rod between the hammer and
shaft (Figure 51). In addition. support
both bearing races
with wooden blocks as shown in f igure 51.
3. The most ideal method of bearing removal is with a hy-
draulic press. However, certain procedures must
be fol-
lowed or damage may occur to the bearing, shaft or
bearing housing. Note the following if using a press:
a. Always support the inner and oute r bearing races
with a suitable size wood or aluminum ring
(Figure
52).
If
only the outer race is supported. pressure ap-
plied against the bearings and/or the inner race will
damage them.
b. Always make sure the press ram (Figure 52) aligns
with the center of the shaft. If the ram is not cen-
tered, it may damage the bearing and/or shaft.
c. The moment the shaft is free
of
the bearing, it will
drop to the floor. Secure the shaft to prevent it from
falling.
Be
aring
Installation
1. When installing a bearing in a housing. pressure must
beapplied to the outer bearing race (Figure 53). When in-
stalling a bearing on a shaft. pressure must be applied to
the
inner bearing race (Figure 54).
2. When installing a bearing as described in Step 1. some
type
of
driver willbe required. Never strike the bearing di-
rectly with a hammer or the bearing will be damaged. A
piece
of
pipe or a socket with an outer diameter that
matches the bearing race will be required.
Fig
ur
e SS
shows the correct way to use a socket and hammer when
installing a bearing.
I
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