Autopilot issues??

[Carmel2]

It's an Raytheon ST4000 2001. Normally when I switch on the instruments it clicks into gear and is OK to go. Today I changed the cam belt and now all kinds of things are going wrong. After about 3 to 4 minutes I get a low battery warning (the batteries are fine) so just in case I started the engine, and the same problems persist. I engage the clutch, go onto auto and add 10 degrees. The heading changes accordingly but the wheel doesn't move, then the wind instrument go mad, flickering all over the place and the chartplotter starts flashing on and off. If I go back to standby everything calms down and becomes normal, other than no autopilot.....

Any thoughts gratefully received.

 

[PaulRainbow]

Sounds like a bad connection to me, check all of the connections carefully. I might start with negative connections.

 

[duncan99210]

I'm with PR on this, sounds like a connection that's been nudged out of place when you were changing the belt.

 

[Carmel2]

All sorted, indeed a bad connection on the drive unit, thanks one and all!