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PROBLEM
POSSIBLE CAUSE
SUGGESTED ACTION
Catastrophic Failures:
8. Low oil level in sump.
8. Check oil level frequently,
Broken Shafts,
and add oil as required.
Bent Rods, etc.
(continued).
9. Contaminated oil in sump.
9. Check oil condition
frequently.
10. Cavitation shock loading.
10. See Cavitation, Fluid Knock
or Hammer problem.
Stud Failures.
1. Catastrophic failures.
1. See Catastrophic Failures
problem.
2. Improper nut torquing.
2. Check torque specifications
and torque to correct values.
3. Stud bending due to uneven
3. Check nut seat surface for
nut seating.
flatness. Rework or replace
as required.
4. Corrosive attack by pumped
4. Treat fluid or use corrosion
fluid.
resistant studs.
5. Studs damaged before
5. Check condition before
installation.
installation, and replace if
necessary.
6. Low strength studs.
6. Use Gardner Denver studs.
