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General Discussion of preventative/corrective maintenance and other technical issues regarding your coach that are not covered in other Mechanic's Corner categories (ex. refrigerators, water heaters, and compressors).

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  #1  
Old 02-26-2012
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sanibel sanibel is offline
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Default Vacuum generator hose routing - fixes leak

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.
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John (and Robin) Churchill
Black Tongue Farm
Sanibel, FL

1979 FC33 Buddy Luce's bus (looking for a name)

LARGE MARGE - She left me for another man
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  #2  
Old 02-26-2012
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Turbokitty Turbokitty is offline
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Location: Clearwater
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Quote:
Originally Posted by sanibel View Post
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"
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Timberlake Products Group, Inc.
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1983 FC35RB Left me for Atlanta!
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  #3  
Old 02-26-2012
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sanibel sanibel is offline
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I like "The Merry Mastodon", but Robin nixed it... like a lot of my great ideas.
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John (and Robin) Churchill
Black Tongue Farm
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1979 FC33 Buddy Luce's bus (looking for a name)

LARGE MARGE - She left me for another man
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  #4  
Old 02-27-2012
mynavion mynavion is offline
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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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