OM−02806
0 SERIES
MAINTENANCE & REPAIR PAGE E − 7
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.
Use caution when handling hot bearings to
prevent burns.
NOTE
Position the inboard bearing (44) on the shaft with
the thick side of the outer ring on the bearing to-
ward the impeller end of 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 suitably sized
sleeve and an arbor (or hydraulic) press to reposi-
tion 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.
When installing the bearings onto the
shaft, never press or hit against the outer
race, balls, or ball cage. Press only on the
inner race.
Secure the inboard bearing on the shaft with the re-
taining ring (45).
When installing the shaft and bearings into
the intermediate bore, push against the
outer race. Never hit the balls or ball cage.
Slide the shaft and assembled bearings into the in-
termediate until the bearing (40) seats against the
shoulder in the intermediate bore.
Slide the oil seal (38) over the shaft with the lip posi-
tioned as shown in Figure 1. Press the oil seal into
the intermediate until the face is just flush with the
outer face of the intermediate. Be careful not to roll
or damage the lip of the oil seal.
Apply a light coating of oil to the lip of the oil seal
(48) and press it into the bearing cap (47) with the
lip positioned as shown in Figure 1.
Shaft endplay should be between .002 and .008
inch (0,05 − 0,20 mm). To determine the correct
thickness of bearing shims (17) to achieve this
endplay, measure the step on the bearing cap (47)
and bearing bore depth as shown in Figure 3.
Figure 3. Measuring for Bearing Shims
Install the thickness of shims indicated at the inter-
section of the bearing cap step and bearing bore
depth dimensions shown in Table 1.
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