Hi There All,
According to the Airmaster maintenance manual (see above) the brushes should
be replaced when. they are used! Has anybody an idea of their life-time? We
have nowadays 425 hours (and close to periodic 100) with original brushes
and I'd like to avoid unplug them just to verify.
Thanks for every answer.
Section 11.3.2. Replacement of Slip-Ring Brushes
The sensor/brush assembly brushes that run on the slip-ring will
progressively wear down, as they
act on the slip-rings. Once they have become so worn that the spring behind
them is at full
extension, they will no longer have good contact with the slip-ring. This
may be observed during
an inspection of the propeller, or may become apparent as a result of an
open circuit failure of the
pitch change mechanism (indicated by all three controller indicators
flashing red).
Rgds
Max Cointe
F-PMLH TriGear Kit #560
912ULS Airmaster 420 hours
<mailto:mcointe@free.fr> mcointe@free.fr
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