Ray Marine Auto Pilot Malfunction

[SVRealityCheck]

We have a Type 3 Hydraulic Autopilot (M81202). After a 30 mile, calm seas passage, autopilot would not disengage & steering locked up. I believe it may be clutch malfunction but cannot find service manual & Ray Marine was not much help when I called. Does anyone have an exploded diagram or service manual?? Or can anyone describe how to access inside of clutch?
"A" - MFer won't budge!!!
How do I get inside of "B"? (See pics)

Thanks, in advance, for any help you can offer.

[RaymondR]

Not familiar with that autopilot but my guess would be that you unscrew the hex nut in image B and remove the solenoid and then there will be another hex nut underneath the solenoid which when unscrewed will allow the shuttle for the bypass valve to be removed.

[SVRealityCheck]

Appreciate the input. If unable to obtain an exploded diagram, will proceed (fingers crossed).

[RaymondR]

Where did the brassy looking filings in image B come from?