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A) if single axis then there is no altitude hold. A servo in the rudder is called a YAW damper and no you do not have one.
It could be the sensor in the AI which is giving the AP reference, HOWEVER, the acid test is moving the manual potentiometer on the ground which OVERIDES and does not use the AI input. It is taken out of the circuit.
The semiconductors are for the 28 volt model. since the transisitors are DC coupled, you may need to take them out of the circuit for testing.
There is a way of testing the servo while in AC but I would leave that to a knowlegeable person (techie) or a person like GMAS.
You can get at the brushes when the elect module is out. Probably okay. Brushes may be worn. lube the chain and gear mechanism but no lube on the clutch.
I have seen these units show up on EBAY but transistors are worth about 3 dollars apiece. Cheaper than postage!.
[b] Never take your autopilot out and send it away. You are asking for trouble!!!!!!!! [b]
These transistors are TO3 cases and easy to test and replace.
Be careful!
Bob
Last edited by Bob Cook : 07-10-02 at 05:45 PM.
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