What is this brake screw?
05-23-2011, 03:13 PM
#1
What is this brake screw?
In a pinch.
I need to replace the brake screw (it's leaking, though it was the o-ring, replaced that, still leaking). I'd like to replace the whole gold screw assembly that is screwed into the brake black I believe it's called.
Anyway, I determined where the leak was coming from, pulled the part, and forgot to look up what it's called in my books. Now I'm at work, I want to order the part online, but can't find the part on any of the sites...so was hoping someone could tell me what it's called so I could hopefully easily find it.
Any help is appreciated, and it's the brighter gold screw that is screwed into the bottom of the brake block.
I need to replace the brake screw (it's leaking, though it was the o-ring, replaced that, still leaking). I'd like to replace the whole gold screw assembly that is screwed into the brake black I believe it's called.
Anyway, I determined where the leak was coming from, pulled the part, and forgot to look up what it's called in my books. Now I'm at work, I want to order the part online, but can't find the part on any of the sites...so was hoping someone could tell me what it's called so I could hopefully easily find it.
Any help is appreciated, and it's the brighter gold screw that is screwed into the bottom of the brake block.
05-23-2011, 03:22 PM
#2
Safety Car
That's your propotioning valve (Gold distribution block all the brake lines attach too) and it is year specific in c3 vettes. It looks like someone tried adapting one from a different year with the spacers in there. Corvette Central carries new proportioning valves. Trying to fix a leaky fix like that just isn't worth the time IMO
05-23-2011, 03:26 PM
#4
Sure hope not...looks like the whole part is $100. Fail.
There is a round rubber spot on the one side of the screw. I believe the leak is coming from there, but it's hard to tell as that rubber part faces the frame and is in close. The leak is coming directly from that part, so it's got to be it.
What is that rubber circle for? It's actually like an indented circle, with a rubber piece in the middle, and like 5 small rubber pieces around it.
There is a round rubber spot on the one side of the screw. I believe the leak is coming from there, but it's hard to tell as that rubber part faces the frame and is in close. The leak is coming directly from that part, so it's got to be it.
What is that rubber circle for? It's actually like an indented circle, with a rubber piece in the middle, and like 5 small rubber pieces around it.
05-23-2011, 03:30 PM
#5
is this what you want? are you talking about the brake switch in the middle of the block?
http://www.ecklers.com/corvette-brak...1974-1977.html
http://www.ecklers.com/corvette-brak...1974-1977.html
Last edited by MelWff; 05-23-2011 at 03:35 PM.
05-23-2011, 03:39 PM
#7
Race Director
Sure hope not...looks like the whole part is $100. Fail.
There is a round rubber spot on the one side of the screw. I believe the leak is coming from there, but it's hard to tell as that rubber part faces the frame and is in close. The leak is coming directly from that part, so it's got to be it.
What is that rubber circle for? It's actually like an indented circle, with a rubber piece in the middle, and like 5 small rubber pieces around it.
There is a round rubber spot on the one side of the screw. I believe the leak is coming from there, but it's hard to tell as that rubber part faces the frame and is in close. The leak is coming directly from that part, so it's got to be it.
What is that rubber circle for? It's actually like an indented circle, with a rubber piece in the middle, and like 5 small rubber pieces around it.
That part is what usually fails on the valve.
Check out this thread Duke explains it.
http://forums.corvetteforum.com/c3-t...e-leaking.html
05-23-2011, 03:54 PM
#8
Race Director
Here is a pic of the valve with the prop spool removed not shown). You could try to replace the oring on the spool at the end closest to the rear line, I've never bothered.
05-23-2011, 04:07 PM
#9
Le Mans Master
Sure hope not...looks like the whole part is $100. Fail.
There is a round rubber spot on the one side of the screw. I believe the leak is coming from there, but it's hard to tell as that rubber part faces the frame and is in close. The leak is coming directly from that part, so it's got to be it.
What is that rubber circle for? It's actually like an indented circle, with a rubber piece in the middle, and like 5 small rubber pieces around it.
There is a round rubber spot on the one side of the screw. I believe the leak is coming from there, but it's hard to tell as that rubber part faces the frame and is in close. The leak is coming directly from that part, so it's got to be it.
What is that rubber circle for? It's actually like an indented circle, with a rubber piece in the middle, and like 5 small rubber pieces around it.
Gary
05-23-2011, 04:56 PM
#10
05-23-2011, 05:26 PM
#11
Race Director
05-23-2011, 05:42 PM
#12
05-23-2011, 09:17 PM
#13
Race Director
In my pic the spool in directly laying under where it would go inside the block.
05-23-2011, 09:57 PM
#14
05-24-2011, 02:22 AM
#15
Race Director
As best I remember, the dia of the spool hits the end of the prop valve housing when in place. the switch spool doesn't move very much, maybe 3/16" max.
05-25-2011, 06:02 PM
#17
Le Mans Master
Did you get the rebuilding instructions I sent you? I can see that the o'ring on the plunger bearing (the one that shows in your photo) is toast
Gary
Gary
Last edited by Duke94; 05-25-2011 at 06:05 PM.
05-26-2011, 05:25 PM
#18
08-24-2011, 03:43 PM
#20
Cruising
Member Since: May 2011
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I have the same problem (see this thread) - looking for any help/instructions to maybe keep from buying the entire PV...? Or is that just a better idea anyway?
TIA
TIA