Gorman-Rupp Pumps U6B65S-B 1289655 and up - Manual (Page 34)

OM-05670 SUPER U SERIES
MAINTENANCE & REPAIR PAGE E - 11
Slide the shaft and assembled bearings into the
bearing housing until the retaining ring on the out­
board bearing seats against the bearing housing.
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
It is recommended that a sleeve be positioned
against the inboard oil seal (29) 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 (30) on the lubricated
shaft with the lip positioned as shown in Figure 2.
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 (19) into the bearing cap (18) with
the lip positioned as shown in Figure 2. Replace
the bearing cap O‐ring (15), and secure the bear­
ing cap with the hardware (16 and 17). 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 2 and 6)
Clean the seal cavity and shaft with a cloth soaked
in fresh cleaning solvent.
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.
The seal is not normally reused because wear pat­
terns on the finished faces cannot be realigned
during reassembly. This could result in premature
failure. If necessary to reuse an old seal in an emer­
gency, carefully wash all metallic parts in fresh
cleaning solvent and allow to dry thoroughly.
Handle the seal parts with extreme care to prevent
damage. Be careful not to contaminate precision
finished faces; even fingerprints on the faces can
shorten seal life. If necessary, clean the faces with a
non‐oil based solvent and a clean, lint‐free tissue.
Wipe lightly in a concentric pattern to avoid
scratching the faces.
Inspect the seal components for wear, scoring,
grooves, and other damage that might cause leak­
age. If any components are worn, replace the com­
plete seal; never mix old and new seal parts.
If a replacement seal is being used, remove it from
the container and inspect the precision finished
faces to ensure that they are free of any foreign
matter.
To ease installation of the seal, lubricate the bel­
lows and stationary seat O‐rings with water or a
very small amount of oil, and apply a drop of light
lubricating oil on the finished faces. Assemble the
seal as follows, (see Figure 6).