Threaded Mode | Linear Mode

stgermain45

Hello,

I recently sent my Autopilot Type2 hydraulic linear drive (M81200) into Raymarine for repair due to hydraulic leaking. That issue is fortunately resolved after Raymarine's full rebuild. On installation and trial, the wheel would immediately turn when engaged (even past the stops if you let it). Again, fortunately resolved by a 1 minute call to Raymarine and getting the advise that I would need to reverse power +/- wires to the unit from the original installation. Odd, never would have guessed that! And great tech support!

However, now my problem is that the unit will NOT disengage when hitting standby after a bit of time in auto. In testing, I can disengage if reverting back to standby soon after engaging auto. This would indicate it's not an electrical issue (and I didn't change anything other than sending the drive in). However, if the unit is left engaged in auto for a longer period of time, the only way I can get back the wheel is to physically disconnect the + or - power cable to the drive motor (flipping the breaker to the electronics/autopilot does not do it). Sometimes the wheel will be freed after a prolonged period of time without having to disconnect cables. Raymarine phone tech support advised it was likely an issue with air in the system and needed bleeding. However, I didn't fully grasp the bleeding procedure. Can you please outline the steps on how to resolve this issue?

In case it's useful in some way:
ST7000+ Control Head (nav)
ST6000+ Control Head (helm)
T2 Linear-Hyd Drive (M81200)
T300 Course Computer
Fluxgate Compass
Rudder Indicator

Thanks,
Chris