Propeller Owner's Manual
140
TESTING AND TROUBLESHOOTING
61-00-40
Page 4-12
Rev. 1 May/11
O. Propeller Underspeed (Non-governing)
(1) Check:
(a) Tachometer error
(b) Propeller rigging
P. Propeller Underspeed (Governing)
(1) Check:
(a) Tachometer error
(b) Excessive engine transfer bearing leakage
(c) Governor oil pressure is low
(d) Governor oil passage is clogged
Q. Oil or Grease Leakage
CAUTION:
GREASE LEAKAGE THAT CAN BE
DESCRIBED AS EXCESSIVE AND
APPEARING SUDDENLY, ESPECIALLY
WHEN ACCOMPANIED BY VIBRATION,
SHOULD BE INVESTIGATED
IMMEDIATELY BEFORE FURTHER
FLIGHT.
(1) For grease leakage, check:
(a) Damaged blade clamp O-ring seal
(b) Damaged jack plate cover gasket
(2) For oil leakage, check:
(a) Damaged diaphragm (-7 and -8 propellers)
(b) Damaged gasket between the engine and cylinder
(-7, -8, -3, and -6L propellers)
(c) Damaged O-ring around the cylinder mounting stud
(-8 propellers)
(d) Loose guide pin in the cylinder (guides the piston)
(-6L propellers)
(e) Damaged O-rings in the cylinder (-3, -6L propellers)
Summary of Contents for HC-D2MV20-3 Series
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