Another Power Brake, no vacuum question.. - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

 
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post #1 of 11 (permalink) Old Jun 13th, 08, 10:59 AM Thread Starter
 
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Another Power Brake, no vacuum question..

Hi, I'm new, so take it easy....
Well, I've helped restore a 69 BB Camaro and it finally hit the road to find the brakes work, but no power asist!!!! So, we checked for vacuum (by disconnecting the hose and putting my thumb on it) which has plenty of suction. The booster is from Rick's First Generation. (rebuit Delco unit) I have removed the power booster and from the pedal rod side, the "plunger" seem to sit 1.5 inches deep, with the rod sticking out. It seems to me that the plunger should have more travel than it appears. Is this correct? Also, if I apply pressure to the rod, it directly pushes the master cylinder side out. So where does the power assist come into play? We are stuck in the mud..... any thoughts???? Thanks for ANY help!!!!
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post #2 of 11 (permalink) Old Jun 13th, 08, 02:08 PM Thread Starter
 
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Re: Another Power Brake, no vacuum question..

I guess I stumped the crowd.....
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post #3 of 11 (permalink) Old Jun 13th, 08, 07:22 PM
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Re: Another Power Brake, no vacuum question..

bad booster.


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post #4 of 11 (permalink) Old Jun 14th, 08, 03:17 AM
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Re: Another Power Brake, no vacuum question..

ok, so I can answer part of one question.
the rod that connects to the brake pedal is directly connected to the rod that pushes out the other side of the booster so that when you do not have vacuum the brakes will still work, so yes when you apply pressure to the rod it does come directly out the other side. The assist comes from the engine vacuum pulling when you press the brake pedal.

as for the rest of your question about travel and what not, can you be more specific? I don't really know what you mean.

but more than likely, yes, you got a bad booster
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post #5 of 11 (permalink) Old Jun 14th, 08, 06:16 AM
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Re: Another Power Brake, no vacuum question..

Go to CPP under tech they have a lot of info on this. CPP.COM

Kirk
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post #6 of 11 (permalink) Old Jun 15th, 08, 07:34 AM Thread Starter
 
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Re: Another Power Brake, no vacuum question..

Thanks guys.... I guess I should re-word this. SInce my bro had the brain storm of tossing the old power booster, I have no idea what the booster rod position (brake pedal side) should look like. Again, the rod sits in a bore over 1.5 inches deep. There seems to be alot of travel not being used. I need a pic of a booster un-installed from the pedal side, to see if the one we have is in the correct position. Again, thanks for any help, I hope I decribed the issue so that people can understand.
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post #7 of 11 (permalink) Old Jun 15th, 08, 02:45 PM
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Re: Another Power Brake, no vacuum question..

hmm, well, I'm not much help. But did you adjust the push rod so that when the brake pedal is up there is some slack and not pushing the booster at all?
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post #8 of 11 (permalink) Old Jun 16th, 08, 08:06 AM Thread Starter
 
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Re: Another Power Brake, no vacuum question..

400bird, good question.... I'm the one that gets told when things don't work. I am going to re-assemble the power booster and see what happens. Thanks again.
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post #9 of 11 (permalink) Old Jun 19th, 08, 09:12 AM Thread Starter
 
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Re: Another Power Brake, no vacuum question..

Well, I reassembled the power booster/brake assembly and re-adjusted the rod..... low and behold, we have power brakes!!!! I think the rod adjustment was wrong. Thanks for the help. Here's a pics of our project.
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post #10 of 11 (permalink) Old Jun 19th, 08, 05:06 PM
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Re: Another Power Brake, no vacuum question..

Very nice, enjoy driving it, and stopping it.
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post #11 of 11 (permalink) Old Jun 20th, 08, 05:55 AM
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Re: Another Power Brake, no vacuum question..

Quote:
Originally Posted by nh-archer View Post
I guess I stumped the crowd.....
Maybe the ones with the answers were not paying attention during the 3 hours and 9 minutes you were sitting on pins and needles. Some of these guys have actual jobs....

Glad to see that you have brakes, even if it took a long time.
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