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Vacuum line to brake booster?
#1367237 Wed Jul 01 2020 12:13 AM
Joined: Dec 2014
Posts: 680
M
Shop Shark
I'm just hooking up the vacuum line to my OG windshield wiper motor. The simplest method is to run a T off the brake booster line. I can't imagine that would cause any issues but I thought I'd ask the experts.


1951 Chevy Panel Truck
Re: Vacuum line to brake booster?
miraclepieco #1367267 Wed Jul 01 2020 03:22 AM
Joined: Mar 2010
Posts: 9,401
5
Master Gabster
As long as your brake booster has a working check valve, you should be good to go. That check valve is to allow for the booster to retain its function for one more stop in case the engine stops running. It will do the same thing when the wipers are on, doing their intermittent wiper thing. smile

Re: Vacuum line to brake booster?
52Carl #1367281 Wed Jul 01 2020 06:53 AM
Joined: Dec 2014
Posts: 680
M
Shop Shark
Thanks Carl. Now that you mention it, I've seen some check valves have T's branching off from them, presumably for other vacuum accessories. Maybe I should try one of those.


1951 Chevy Panel Truck
Re: Vacuum line to brake booster?
miraclepieco #1368839 Sun Jul 12 2020 11:00 PM
Joined: Dec 2010
Posts: 21
D
New Guy
Just as an added safety precaution, try adding a vacuum chamber ( tin can or bulb seen on so many vehicles) for a little extra reserve for initial starting or accidental dying in the rain (Murphy's Law), I did that with my 54 (hid it under the dash) and it made a world of difference, just dont get too big of a chamber.

Last edited by dwragon; Sun Jul 12 2020 11:04 PM.
Re: Vacuum line to brake booster?
miraclepieco #1368938 Mon Jul 13 2020 05:49 PM
Joined: Dec 2008
Posts: 1,471
P
Shop Shark
I'll just leave this for the experts.

Re: Vacuum line to brake booster?
miraclepieco #1369358 Thu Jul 16 2020 06:05 PM
Joined: Feb 2004
Posts: 20,860
H
Boltergeist
A piece of PVC pipe a couple of feet long with caps glued onto both ends and a rubber grommet fitted into one end cap that will accommodate a brake booster check valve makes a good reservoir. Plumb a separate 3/8" or 1/2" vacuum hose to the brake booster and the vacuum trapped in the pipe will allow a couple of brake applications and/or a smooth shift of a 2-speed rear axle after the engine quits. A pipe up to about 4" in diameter fits nicely inside a frame rail under the cab.
Jerry


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Re: Vacuum line to brake booster?
miraclepieco #1369360 Thu Jul 16 2020 06:08 PM
Joined: Mar 2019
Posts: 954
G
Shop Shark
Another good trick. Ill keep that 1 in mind.


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