WSP™
DATA SHEET
WSP™ SELF-PRIMER PUMPS
WSP-D300_6
Rev. 3
01/09/20
© 2019 The Factory
26
NOTE:
To correctly install the outboard bearing on the shaft, place it with the integral
retaining ring on the bearing O.D. near the drive end of the shaft.
To ease installation, the bearings may be heated with an induction heater, an electric
oven, a hot plate or a hot oil bath. Bearings should never be heated directly on a hot
plate or by using a direct flame.
NOTE:
When using a hot oil bath to heat the bearings, be sure both the oil and
container are absolutely clean. If the oil was previously used, thoroughly filter
it before using.
When the bearings are heated to a uniform 250º F (120º C), slide the bearings onto
the shaft individually until they are all fully seated. Prevent bearings from cooling too
quickly and sticking on the shaft by sliding them on the shaft rapidly in a single
continuous motion.
When heating the bearings is not practical, use an appropriately sized sleeve along
with an arbor or hydraulic press to install bearings on the shaft.
NEVER PRESS OR HIT AGAINST THE OUTER RACE, BALLS, OR BALL CAGE DURING
BEARING INSTALLATION ONTO THE SHAFT. PRESS THE INNER RACE ONLY.
Use the bearing snap ring to attach the outboard bearing on the shaft.
Weir Specialty Pumps recommends the use of a WSP shaft installation tool or a
properly tapered sleeve if the WSP shaft tool in unavailable. This will prevent the lip
of the oil seal from rolling as the shaft and bearings are installed in the bearing
housing.
When the lip seal sleeve is installed, lubricate the lip seal portion of the shaft before
sliding the shaft and assembled bearings into the bearing housing. The retaining ring
on the outboard bearing should be seated against the bearing housing. Next,
remove the installation tool or properly tapered sleeve.
Once the lip is positioned as shown in Figure 6, push the inboard oil seal into the
bearing housing bore.
Now, push the outboard oil seal into the bearing cap while the lip is positioned as
noted in Figure 6. Replace the bearing cap gasket and attach the bearing cap with
its hardware. Take care not to damage the oil seal lip on the shaft keyway.
Summary of Contents for WSP-6
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