Team Chevelle banner
Cancel
Create thread New Garage Forums

My proportioning valve come from the bottom of the ocean..... I think.

Jump to Latest
1 - 20 of 37 Posts
Y

YenkoChevelle69

· Registered
Joined
·
2,183 Posts
Discussion starter · #1 ·
Look at this thing. I ordered it from a Chevelle specialist in OH. I mean I got it cheap enough but I am afraid of destroying the threads while taking the brake lines out.... Should I clean this thing up with a wire wheel?

Image

Image


Does anyone sell a replacement rubber cover for the back of the valve? Mine is dry rotted.
 
#4 ·
Re: My proportioning valve come from the bottom of the ocean..... I think.

I wouldn't worry about the thread, I would be more worried about rounding off the nuts. This is what I usually do on flare nuts that are rusted like that: Cut the lines as close to the nut as possible (don't use a hack saw, you don't want any debris in the valve...). Spray some rust penetrant around the thread and tap the nut hard with a hammer. Use a 6-point socket to remove the fitting. A 6-point socket won't round the nut as easily as a 12-point, so that's what I prefer to use. I can't guarantee that you'll get it out, but chances are that the rust hasn't creeped to far into the thread so it will be easy to remove once you break it loose.
 
#5 ·
#9 ·
Re: My proportioning valve come from the bottom of the ocean..... I think.

I would take a pair of vice grips and unscrew the fittings

I have seen much worse and haven't had any problems doing it that way

they will come right out and you won't mess up the threads
 
#11 ·
Re: My proportioning valve come from the bottom of the ocean..... I think.

Tom's 68 conv said:
I would take a pair of vice grips and unscrew the fittings
Click to expand...
I concur... use a vise-grip, and maybe a pipe on it for leverage if necessarry, with the prop valve clamped in a vice. Should come out no problem. :)
 
#12 ·
Re: My proportioning valve come from the bottom of the ocean..... I think.

Ill be willing to bet that a little penetrant and a 6 point will take those right off. And using an impact might do the job. It takes more then you would think to ruin the threads inside. Soak the fittings for a bit first. Are you really sure your going to have a better unit there then a new one? Im not so sure I would trust that thing over a new one. I suppose you could send it out to be rebuilt but then your right at square one again. A new unit.
 
Save
Reply Quote Like Like
#13 ·
Re: My proportioning valve come from the bottom of the ocean..... I think.

Chris R said:
Ill be willing to bet that a little penetrant and a 6 point will take those right off. And using an impact might do the job. It takes more then you would think to ruin the threads inside. Soak the fittings for a bit first. Are you really sure your going to have a better unit there then a new one? Im not so sure I would trust that thing over a new one. I suppose you could send it out to be rebuilt but then your right at square one again. A new unit.
Click to expand...
it kinda scares me using penatrating oil on a place where brake fluid will be
in case any gets in side - it may contaminate the area where brake fluid will be
and brake fluid and oil definately do not mix
I normally use brake fluid instead of pentrating oil that way there are no worries of contamintion
an impact might break the fitting
if you use a socket - use a breaker bar and give some taps with a hammer on the backside of the part that holds the socket while you are applying force
 
#14 ·
Re: My proportioning valve come from the bottom of the ocean..... I think.

soak the threads in PB Blaster! Crimp off the ends of those tubes and just don't spray the stuff directly in there.
A drill with a wire wheel would probably do wonders to that thing, then some Rustoleum, and it's good to go :D
 
#16 ·
Re: My proportioning valve come from the bottom of the ocean..... I think.

Tom's 68 conv said:
it kinda scares me using penatrating oil on a place where brake fluid will be
in case any gets in side - it may contaminate the area where brake fluid will be
and brake fluid and oil definately do not mix
Click to expand...
You shouldn't soak it, you'll just need one drop so I don't think it's a problem. You'll be bleeding the brakes once it's installed, so if anything is left, it will get flushed out and diluted.

Still think a 6-point is the first thing you need to try. If you use vise grips, there's no way back. Once the nuts are rounded off, they will be much more difficult to remove.
 
#18 ·
Re: My proportioning valve come from the bottom of the ocean..... I think.

YenkoChevelle69 said:
Alright I guess I will soak this dude down, where the treads are, and start with a 6 point socket and make my way to the impact gun LOL.
Click to expand...
"Use the force, Luke. Use the force" :)
 
#19 ·
Re: My proportioning valve come from the bottom of the ocean..... I think.

I'd still use the grips

right after the six point socket

but if you only have a twelve point

use the grips first

I've always used the grips in the situation you are in and they work very well

they must be tight though

not sure here but the old timer that told me that trick said that it destorts the fitting and makes it easier to unlock the rust

it has never let me down in over 20 years

and have never ruined the threads
 
#20 ·
Re: My proportioning valve come from the bottom of the ocean..... I think.

I can't see any reason not to use a big vice-grips unless you want to save the rusty old fitting. Like Tom said, it also helps break it loose when you clamp down on it tight.
 
1 - 20 of 37 Posts
About this Discussion
36 Replies
11 Participants
Last post:
Tom's 68
Team Chevelle
posts
5.3M
members
131K
Since
1998
A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more!
Full Forum Listing
Explore Our Forums
Bench Racing Performance Engine Chevelle Tech Body Shop