Quote:
Originally Posted by cajunwings
If acquiring a used part make sure the ?B? nuts are steel. Many of these lines were removed to comply with a old AD note (90-04-06) because of the aluminum ?B? nuts. Also the fittings on the on the governor drive and the nose of the crankcase need to be steel due to the working pressures involved.
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The working pressure is only about 40-60 psi. If you connect shop air to the fitting on the nose case you can move the prop blades to high pitch with about 55-60 psi. The reason for the steel lines was because the aluminum ones were work hardening and cracking.
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Mike Hilger
RV-6 N207AM w/G3X, 1,600 hours +
South St. Paul, MN (KSGS)
A&P, EAA Tech Counselor
We're all here because we're not all there...
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