Industrial seal self study guide - SKF.com

Chapter 9 Review (cont...)
8. Garter spring damage requires careful inspection, often necessitating
calling in an “expert.”
❑ True ❑ False
9. For out-of-round shaft repairs, a Speedi-Sleeve or SKF Large Diameter Wear
Sleeve is often a better solution than shaft removal and reshaping.
❑ True ❑ False
10. When examining for STBM, the lip area with the least wear indicates
the direction of shaft misalignment.
❑ True ❑ False
11. When using a wooden workpiece for flush installation of a seal, it is acceptable
to use a steel hammer.
❑ True ❑ False
12. Because seal I.D. is easy to measure, only three measurements need
to be taken and averaged.
❑ True ❑ False
8. F
9. F
10. F
11. T
12. F
13. When determining the cause of a leak, remove the seal immediately and inspect it.
❑ True ❑ False
13. F
14. If there is a history of seal failures for a particular installation, the problem
may not be the seal’s fault.
❑ True ❑ False
15. A hammer blow without any material to absorb the shock wave can
dislodge the garter spring from its proper operating position.
❑ True ❑ False
14. T
15. T
16. A swollen appearance and soft feel to a seal’s rubber element probably indicates
chemical incompatibility with the system media.
❑ True ❑ False
16. T
17. There is no problem installing a seal into a bore without a lead-in chamfer.
❑ True ❑ False
17. F
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