Short Notes about Propeller

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*     
If
propeller not coming out:

  • 5 – 10% extra oil pressure to be applied,
    if not
  • Isolate boss & apply dry ice to
    shaft, if not
  • Heat the boss uniformly with low flame
    torch at not more them 200OC, if not
  • Ask recommendation from manufacturer.

*     
Check
during propeller fixing:

  • Ensure Main engine is not turning (hang
    notice).
  • Test report of seal assembly to be
    checked.
  • Report of tail shaft polishing and
    magnetic crack detection
  • Detail report if propeller repaired.
  • Report of propeller polishing and crack
    detection (LPT)
  • Visual inspection of threaded part of the
    shaft and boss.
  • Cleanliness of shaft cone and re – roughen of the
    surface to be checked.
  • When fixing to ensure that makers
    instruction to be followed.
  • Radial reference mark on both propeller
    & shaft to coincide.
  • Final push up pressure according to the temp of the boss, if
    boss TP↓ move oil pr.
  • Loading ring should not come out more
    then 1/3 of the ring width.
  • Distance travel by the boss.

Nut
bolt to be wire lashed and cemented

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