Page 20 F00636
• Remove volute to expose impeller.
• Peel off old volute gasket (or O-Ring) and discard.
NOTE: Certain models such as the B4EY, are constructed
with a suction cover which is removed first to access impeller.
GENERAL
• Shaft assembly of S.A.E. mounted pumps should be
periodically (annually minimum) torn down for inspection of
worn parts, cleaning, and re-greasing. Most importantly, to
check shaft sleeve and bearings for pitting. Replace worn
components as necessary. Parts may be ordered sepa-
rately as required, or for some models, shaft kits are
available that are completely assembled and ready for
installation.
PUMP DISASSEMBLY
• Remove packing gland and packing arrangement as
described in Page 17.
• Remove pump volute and impeller as described on Pages
18 and 19.
• Remove outer bearing cap and slide shaft assembly from
bearing bracket.
• Clean and inspect all components.
SHAFT INSTALLATION
• Thoroughly steam clean or solvent wash the bearing cavity
of bracket to remove old grease and dirt. Check surface of
bracket for cracks, extreme corrosion, or other defects.
• Pack bearings with a lithium-based NLGI No. 2 extra
pressure ball bearing grease (see “Lubrication”, Page 16).
Force enough grease into each bearing to fill internal space
between the races.
• Coat the bearing bores of bracket with oil. Orient shaft
assembly in the direction shown above. Slide shaft and
bearing assembly into bearing bracket.
Do not force them!
When threaded end of pump shaft comes through inside
opening of bearing cavity, place oil seal, water slinger, and
lantern ring over end of shaft. If packing gland or seal
retainer is not of the split variety, place it over the shaft at
this time as well. Slide shaft on through stuffing box until the
first bearing makes contact with the bracket. Carefully align
bearing with the bearing bore and press or tap bearing
assembly into place. Do not use excessive force.
NOTE: Be sure bearing bores and bracket area are clean and
free of contamination or early bearing failure may occur.
• Reinstall outer bearing cap and oil seal.
• Rotate pump by hand, 10-12 rotations.
• Reassemble pump parts and reinstall unit to piping system.
Refer to
Installation
section in this manual for correct
procedure.
Shaft Maintenance/Replacement
Maintenance
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