GORMAN-RUPP PA4A60-4024T-ESP, Инструкция по установке, эксплуатации и обслуживанию

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OM-06301
PA SERIES
MAINTENANCE & REPAIR PAGE E - 27
Most cleaning solvents are toxic and
flammable. Use them only in a well ven­
tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain­
ers.
Inspect the shaft (24) for distortion, nicks or
scratches, or for thread damage on the impeller
end. Dress small nicks and burrs with a fine file or
emery cloth. Replace the shaft if defective.
Clean and inspect the bearings as indicated in
Shaft And Bearing Removal And Disassembly .
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.
Position the inboard oil seal (6A) in the bearing
housing bore with the lip positioned as shown in
Figure 5. Press the oil seal into the housing until the
face is
just flush with the counterbored surface to­
ward the inside of the bearing housing. Inspect for
and remove any sealant shavings that might be re­
moved from the O.D. of the oil seal.
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.
NOTE
Position the outboard bearing (22) on the shaft with
the retaining ring on the bearing O.D.
toward the
drive end of the shaft .
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 against the shaft shoulders. This should be
done quickly, in one continuous motion, to prevent
the bearings from cooling and sticking on 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 a press to reposition 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 outboard bearing to the shaft with the
snap ring (21)
It is recommended that a sleeve be positioned
against the inboard oil seal to prevent the lip of the
oil seal from rolling as the shaft and bearings are
installed in the bearing housing. The O.D. of the
sleeve should be just smaller than the bearing
housing bore, while the I.D. of the sleeve should be
just larger than the O.D. of the lip seal area of the
shaft.
With the lip seal sleeve in place, lubricate the lip
seal area of the shaft, and slide the shaft and as­
sembled bearings into the bearing housing until
the retaining ring on the outboard bearing seats
against the bearing housing. Remove the lip seal
sleeve.
When installing the shaft and bearings into
the bearing bore, push against the outer
race.
Never hit the balls or ball cage.