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'68 911 / '86 944
 
Join Date: Dec 2008
Location: Greenville SC
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Should I fix my broken brake booter check valve?

Today I accidentally broke the small vacuum line attachment on the brake booster. I assumed I needed to replace the part. Looking at the parts list it appears to be tied to the AC. I have stripped the AC from my car. Do I need to fix it? or just cover the hole with epoxy and go on. What do you think?

Old 03-24-2013, 12:40 PM
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iirc it supplies a vacuum canister by the battery and that in turn controls ALL your heater/AC valves, vents and switches under the dash. If you don't have heat or AC I don't think it would matter.

Personally I would fix it, it's a cheap and easy swap.
Old 03-24-2013, 01:41 PM
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Fix it, as it operates other things besides the above. See diagram below.

944 Online Forum - The Porsche 944 Forum For The 944 Enthusiast.

Cheers,
Larry
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Old 03-24-2013, 01:46 PM
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Larry, where is the brake booster check valve in your diagram and does my 1987 na have a carbon canister.
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Old 03-24-2013, 02:09 PM
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I think that vacuum reservoir thing also is the only thing keeping your brake assist working if the car happens to stall out when moving.
Old 03-24-2013, 02:52 PM
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477 611 933A, Available at Pelican. Been there.....

Jon
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Old 03-24-2013, 03:57 PM
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If your car is early the fan controls aren't operated by vacuum as you can probably tell by how they feel. Mine snapped off on my early car and I deleted everything
Old 03-24-2013, 04:10 PM
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Hi Andy, Found a better picture of the Vac Hose Routing. Search is a powerful tool.

vac line in my 1986 944?????

Cheers,
Larry
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1985.5 NA Graphite Metallic, A never ending work in progress,
1992 968 Horizon Blue Cab "New Toy"
Old 03-24-2013, 07:54 PM
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