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912 ULS Gearbox 'Screech'

in General Tech Discussion 8 years ago
In prep for an oil change as normal procedure the propeller was rotated... I noticed a random screech on the compression stroke. Proceeded with the oil change followed by prop rotation...again the 'screeching' on the compression stroke. The engine was started all readings were normal with no abnormal sounds after engine start. The screeching appears to be coming from the gearbox with no fluid leaks visible. Has anyone experienced similar?

Thanx,

Bill
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