PC controller, M20J

[Amelia]

Asking for a friend. No, really!

My esteemed mechanic is needing information about a Brittain vacuum-controlled wing-leveler for a customer’s 1966 M20c. 
He says there’s no vacuum going to the servos. Vacuum is good. Must be a controller someplace, but it’s not listed in the parts book. He’s looking for a schematic, or some information on where he might look. It isn’t where the manual he found on line that says it should be. Anybody have a clue? He’d like not to tear the airplane apart on a fishing expedition. 

Thanks!

[Shadrach]

6 minutes ago, Amelia said:

Asking for a friend. No, really!

My esteemed mechanic is needing information about a Brittain vacuum-controlled wing-leveler for a customer’s 1966 M20c. 
He says there’s no vacuum going to the servos. Vacuum is good. Must be a controller someplace, but it’s not listed in the parts book. He’s looking for a schematic, or some information on where he might look. It isn’t where the manual he found on line that says it should be. Anybody have a clue? He’d like not to tear the airplane apart on a fishing expedition. 

Thanks!

It’s shown in he Mooney IPC as well as the Brittain maintenance manual.  I’ll get copies to you as soon as I am back to my computer.

[Shadrach]

26 minutes ago, Amelia said:

Asking for a friend. No, really!

My esteemed mechanic is needing information about a Brittain vacuum-controlled wing-leveler for a customer’s 1966 M20c. 
He says there’s no vacuum going to the servos. Vacuum is good. Must be a controller someplace, but it’s not listed in the parts book. He’s looking for a schematic, or some information on where he might look. It isn’t where the manual he found on line that says it should be. Anybody have a clue? He’d like not to tear the airplane apart on a fishing expedition. 

Thanks!

Figure 32 from Factory IPC for 1966 MY

Item 12 is the vacuum valve assembly.  I may have a spare in my hangar.  Service Manual download link at the very bottom

PC service Manual here.

 

[Kevin Westbrook]

Kevin Westbrook call me I worked at Brittain I can help trouble shot the p.c 539-292-0474

[LANCECASPER]

On 3/25/2024 at 3:11 PM, Amelia said:

Asking for a friend. No, really!

My esteemed mechanic is needing information about a Brittain vacuum-controlled wing-leveler for a customer’s 1966 M20c. 
He says there’s no vacuum going to the servos. Vacuum is good. Must be a controller someplace, but it’s not listed in the parts book. He’s looking for a schematic, or some information on where he might look. It isn’t where the manual he found on line that says it should be. Anybody have a clue? He’d like not to tear the airplane apart on a fishing expedition. 

Thanks!

Interesting article about the Britain: https://web.archive.org/web/20170810090600/http://www.brittainautopilots.com/mooney-pc-systems.html