TheSamba.com :: View topic - How to: Install power brakes into 1968-1970 Bus (Pic heavy)

Fri May 11, 2012 1:56 pm

And if I give you my address, can you send me seeds of the brake booster tree?

Sorry, I've smoked them all

Fri Jun 14, 2013 7:03 pm

Nice write up aeromech. One question. Are the front and rear vacuum lines just T'd together? Seems like the obvious choice but I haven't been able to find any good diagrams or details, and I don't have a late bus handy to look at....

Fri Jun 14, 2013 7:32 pm

Hal9000 wrote: the front and rear vacuum lines
Please elaborate, your question makes no sense.

Fri Jun 14, 2013 7:39 pm

Hal9000 wrote: Nice write up aeromech. One question. Are the front and rear vacuum lines just T'd together? Seems like the obvious choice but I haven't been able to find any good diagrams or details, and I don't have a late bus handy to look at....

Well, there is a front vacuum line and a rear vacuum line but they are in series with a hard plumbed pipe attached to the frame of the bus. No T involved.

Fri Jun 14, 2013 8:52 pm

aeromech wrote: Hal9000 wrote: Nice write up aeromech. One question. Are the front and rear vacuum lines just T'd together? Seems like the obvious choice but I haven't been able to find any good diagrams or details, and I don't have a late bus handy to look at....

Well, there is a front vacuum line and a rear vacuum line but they are in series with a hard plumbed pipe attached to the frame of the bus. No T involved.
But since the early bus doesn't have the hard line, how did you plumb it for the conversion? (Sorry if I wasn't clear on that part... I'm converting my 70 right now. Just wrapping up the last few details so I can get it back on the road) Like I said, I can't find a diagram of the brake vacuum lines. I can see from the photos I've found that there's a vacuum hose leading back over the beam from the front fitting, but I don't know if it's just tied into the same line that connects to the rear vacuum fitting, or if it runs elsewhere. All the vacuum boosters I've ever dealt with only have a single port and route vacuum to both sides of the diaphragm internally. This setup is new to me and Id rather ask first and not risk guessing wrong and having to do things twice.

EDIT: Found a diagram: What I'm trying to figure out is where hose #72/fitting #67 connects to.

Fri Jun 14, 2013 9:13 pm

Hal9000 wrote: I can see from the photos I've found that there's a vacuum hose leading back over the beam from the front fitting, but I don't know if it's just tied into the same line that connects to the rear vacuum fitting, or if it runs elsewhere. .

http://www.thesamba.com/vw/forum/viewtopic.php?t=304772&highlight=atmosphere+vent

Fri Jun 14, 2013 9:29 pm

busdaddy wrote: Hal9000 wrote: I can see from the photos I've found that there's a vacuum hose leading back over the beam from the front fitting, but I don't know if it's just tied into the same line that connects to the rear vacuum fitting, or if it runs elsewhere. .

http://www.thesamba.com/vw/forum/viewtopic.php?t=304772&highlight=atmosphere+vent
OK, so it IS just a vent then. That makes far more sense, but I read so many people calling it a front vacuum fitting (both here on thesamba and elsewhere online) that I got confused and headed the wrong direction in my thinking.

If I can't find a convenient place to route it into the body, I'm sure I have an old breather filter around that I can hook it to and stash somewhere out of the way.

Thanks for the help.

Fri Jun 14, 2013 11:48 pm

I use a small K&N filter with a short piece of hose sticking straight up from the vent.

Sat Jun 15, 2013 6:40 am

Nice post. Though I don't have an early bay, I really enjoyed this thread. These kinds of articles break up the monotony of people asking questions they could easily answer with the search feature. Kudos!

Sat Jun 15, 2013 8:14 am

Aeromech,

Who did you use to rebuild the brake boosters?

Zach

Sat Jun 15, 2013 9:33 am

Rocknrod wrote: Aeromech,

Who did you use to rebuild the brake boosters?

Zach

I found a place here in the San Diego area called Bush Power Brake Service.

http://www.yellowpages.com/national-city-ca/mip/bu...ower+brake

Last one cost me $154 out the door for the rebuild and a one day turn time.

Yesterday 7:17 am

Thanks,

I'll give them a call.

Zach