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-   -   Vacuum generator hose routing - fixes leak (https://www.wanderlodgeownersgroup.com/forums/showthread.php?t=12696)

sanibel 02-26-2012 08:37 PM

Vacuum generator hose routing - fixes leak
 
2 Attachment(s)
I think I have mine figured out. There was a good post a couple years back

http://www.wanderlodgeownersgroup.co...543#post149543

and many references to the hissing of the air out when shut off. I started fooling with mine to get the cruise working (not working yet, but I am narrowing the possibilities) and discovered the extra port is a shut off switch for a feedback loop.

Looking at the first picture, the supply comes in below, exhaust is to the right, vacuum is coming towards you and the S port or Switch is left. Vacuum on the S port shuts off the exhaust and it makes no new vacuum. For my cruise, I have routed the vacuum to the "Vac" port (clever aren't I?) on the ball reservoir, the other ball fitting goes to Tee. One leg goes to the servo and the other to the S port. When the servo is engaged or dumped (via the big hose to the brake pedal valve) the vacuum drops and the generator creates more. If you have long lines, this is probably a quick way to check for vacuum leaks.

Turbokitty 02-26-2012 08:41 PM

Quote:

Originally Posted by sanibel (Post 149561)
I think I have mine figured out. There was a good post a couple years back

http://www.wanderlodgeownersgroup.co...543#post149543

and many references to the hissing of the air out when shut off. I started fooling with mine to get the cruise working (not working yet, but I am narrowing the possibilities) and discovered the extra port is a shut off switch for a feedback loop.

Looking at the first picture, the supply comes in below, exhaust is to the right, vacuum is coming towards you and the S port or Switch is left. Vacuum on the S port shuts off the exhaust and it makes no new vacuum. For my cruise, I have routed the vacuum to the "Vac" port (clever aren't I?) on the ball reservoir, the other ball fitting goes to Tee. One leg goes to the servo and the other to the S port. When the servo is engaged or dumped (via the big hose to the brake pedal valve) the vacuum drops and the generator creates more. If you have long lines, this is probably a quick way to check for vacuum leaks.

Looking for a name John? How about "Medium Marge" or... "Marginal":p

sanibel 02-26-2012 09:19 PM

I like "The Merry Mastodon", but Robin nixed it... like a lot of my great ideas.

mynavion 02-27-2012 07:43 AM

Quote:

Originally Posted by sanibel (Post 149567)
I like "The Merry Mastodon", but Robin nixed it... like a lot of my great ideas.

I still like "Luce Goose" :)


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