
31
5. Replace shims under frame feet and tighten
frame to baseplate. A dial indicator should
be mounted to measure the distance be-
tween the top of the frame and the base-
plate. This measurement shouldn’t change
as bolts are tightened.
6. Check total travel of impeller in the casing,
if it is more than .030 in. improper parts or
installation or too much pipe strain is pres-
ent. Determine cause and correct before
proceeding.
7. Adjust impeller clearance using procedures
in the Maintenance section of this manual.
8. Replace any auxiliary piping, and fill pump
with proper lubricant as outlined in the
Maintenance section of this manual.
9. Check to see that it is possible to rotate
the shaft easily by hand, if so continue with
startup of pump in Operation section of this
manual. If shaft does not turn easily deter-
mine cause and correct.
ASSEMBLY TROUBLESHOOTING
Problem
Cause
Solution
Bearing internal clearance too great.
Replace bearings with correct type.
Excessive shaft end play.
Snap ring loose in housing groove.
Reseat.
Sleeve worn.
Replace.
Excessive shaft runout.
Shaft bent.
Replace.
Shaft bent.
Replace.
Excessive bearing frame runout.
Bearing frame flange distorted.
Replace.
Excessive stem runout.
Corrosion.
Replace.
Stem plate not properly seated in stem.
Reseat.
Excessive stem plate runout.
Corrosion or wear.
Replace.
Excessive impeller runout.
Bent vane(s).
Replace impeller.
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