Gorman-Rupp Pumps T8A60S-F6L 1278434 thru 1318430 - Manual (Page 45)

OM−05517 SUPER T SERIES
MAINTENANCE & REPAIR PAGE E − 16
NOTE
Position the outboard bearing (20) on the shaft with
the retaining ring in the outer race toward the drive
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 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.
Install the thrust washer (19) and secure the out-
board bearing (21) to the shaft with the bearing re-
taining ring (18).
It is recommended that a sleeve be positioned
against the inboard oil seal (22) 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.
Position the outboard oil seal (23) on the lubricated
shaft with the lip positioned as shown in Figure 4.
Press the oil seal into the bearing housing until the
face of the seal is just flush with the machined sur-
face on the bearing housing.
Press the oil seal (12) into the drive flange (15) with
the lip positioned as shown in Figure 4. Lightly lu-
bricate the flange O-ring (20), install it in the groove
in the flange, and secure the flange to the bearing
housing with the hardware (13 and 14). Be careful
not to damage the oil seal lip on the shaft keyway.
Lubricate the bearing housing as indicated in LU-
BRICATION.
Seal Installation
(Figures 4, 9, 10 and 11)
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.
Clean the seal cavity and shaft with a cloth soaked
in fresh cleaning solvent. Inspect the stationary
seat bore in the seal plate for dirt, nicks and burrs,
and remove any that exist. The stationary seat bore
must be completely clean before installing the
seal.
A new seal assembly should be installed
any time the old seal is removed from the
pump. Wear patterns on the finished faces
cannot be realigned during reassembly.
Reusing an old seal could result in prema-
ture failure.
To ease installation of the seal, lubricate the shaft
sleeve O-ring (30) and the external stationary seat
O-ring with a very small amount of light lubricating
oil. See Figure 9 for seal part identification.