brake master cylinder or brake booster.. also how to remove stripped bolt which has both ends connected???

[manuelku]

so here is the problem:
I am selling my integra so I am getting the brake fixed, it sinks when I depress it too long so I figure out that's master cylinder.. so I got one, now I am in my way to install it.. but I can't because there is a stripped bolt on one of the two metal brake lines.. so I stop my work and think again.. I am think will that be that my brake booster has problem or something..? or it is absolutely brake master cylinder..

The car with engine off the brake is firm as hell but when it's on for a while like when the brake gets hot, the sinking thingy act up and it will sink down to almost floor when I depress it for too long up hill or so.

How can I find out that master cylinder and brake booster defective.. is that a way to look at it? I take off the brake master cylinder (without one of the metal brake line remove, kinda twist it a little bit.. it looks like the same new master cylinder I got..

thanks.


my second question is a stripped bolt.. it's stripped so I tried to use a vise grip but it doesn't work, I sprayed some wd40 already.. still.
I don't have the picture of the stripped bolt.. but here is the kinda image.. if your car has metal brake lines connected to your master cylinder, you will know what I am talking about..

=========O::MMM

= = matel brake line
O = both end connected bolt stripped
:: = the thread of the bolt
M = master cylinder

 

[Soybomb]

You might be able to cut the line right at the MC, bend it into shape, and reflare it if there is enough slack.

 

[manuelku]

actually I think about cuting the metal line because the new master cylinder kit comes with these:

2 rubber hose
2 plastic brake line bolt-screw thingy for the rubber hose..

I ain't sure that if I am supposed to cut the metal line...

 

[HappyPuppy]

Brake lines require a double flare. It takes some practice and the proper tools to do it correctly.

 

[JC]

The hoses and fittings are for bench-bleeding the master cylinder to expel air before you bolt it on. Try using the proper brake-line wrench to remove the brake line nut before you strip it further.


JC

 

[manuelku]

I actually removed one of the brake line bolt... but one is stripped.. I am hella pissed because I remove evertyhing and that stripped bolt keep me from putting in a new master cylinder..

 

[manuelku]

any idea guys? should I guy a bit of the metal brake line and connect it with a rubber hose that comes with the MC kit? or do they have the brake line metal on purpose?

 

[JC]

The brake lines are metal because of the extremely high pressure they have to contain. DO NOT splice in rubber hose!!!!

 

[notfred]

remove the stripped bolt.

 

[manuelku]

I really need to get that thing fixed should I let a mechanic do it.. I hope they have tools to remove that fuxking stripped bolt

I tried like so many times and the stipped bolt just won't move.. I used the open end wrench, vise grip and such... no use

the reason why the bolt cannot be removed by vise grip is because the position is not easy to use force into.. I mean I have to push to force toward the windshield direction.. and there is a power booster blocking the way.. o well

 

[JC]

If you can't remove the second brake line even with vise grips, I think you need a mechanic to cut the line and install a new flare nut, and reflare the end of the line. Or replace the brake line with
the rounded flare nut. This is life-critical stuff here, you can't micky-mouse brake lines!

 

[Vette73]

No offense, but please take it to a mechanic that knows what they are doing. You don't even know what bench bleeding is, that tells me you are over your head on this job.I have worked on many a car that the owner TRIED to fix themselves and it ended up costing them more to fix it as I had to go back and fix what they broke then fix the problem that was there to begin with.

It sounds like you didn't use a flare wrench and stripped the head of the brake line. Now it may cost just as much to fix that, as it is a double flare and you cant use rubber hose, as it would have to just have someone else do it in the first place.

 

[manuelku]

can someone tell me where I can get a flare wrench?? before I bench bleed my new master cylinder I think I have to make sure I can remove the older MC right?

 

[Vette73]

Originally posted by: manuelku
can someone tell me where I can get a flare wrench?? before I bench bleed my new master cylinder I think I have to make sure I can remove the older MC right?

Flare wrenchs can be had at any Wal-Mart, Autozone, maybe even Kmart.

But don't bench bleed the NEW MC until you get the old one off and can also get the brake line back into the new one. If it is as bad as you say it is you will need to replace it.

 

[Angrymarshmello]

You could try the stripped screw trick where you cut into the head and make a notch, allowing yourself to use a screwdriver to try to get it out (doubtful unless you have a powerful electric drill though)

 

[JC]

Originally posted by: Angrymarshmello
You could try the stripped screw trick where you cut into the head and make a notch, allowing yourself to use a screwdriver to try to get it out (doubtful unless you have a powerful electric drill though)

We figured out he's talking about a brake line flare nut, not a regular bolt. That won't work

 

[Angrymarshmello]

Originally posted by: JC

Originally posted by: Angrymarshmello
You could try the stripped screw trick where you cut into the head and make a notch, allowing yourself to use a screwdriver to try to get it out (doubtful unless you have a powerful electric drill though)

We figured out he's talking about a brake line flare nut, not a regular bolt. That won't work

Ahh didnt see that. (Read over first post and that was it)

 

[Evadman]

Originally posted by: JC

Originally posted by: Angrymarshmello
You could try the stripped screw trick where you cut into the head and make a notch, allowing yourself to use a screwdriver to try to get it out (doubtful unless you have a powerful electric drill though)

We figured out he's talking about a brake line flare nut, not a regular bolt. That won't work

Depending on how much room there is you could use a dremmel to cut off most of the flare nut. It would take FOREVER but it can be done. (I cut off a lug nut on my zuk because someone crossthreaded it on, and I do not have a nut cracker that would fit in there. took me about 3 hours to do since I did not want to cut up the aluminum wheels) Even after removing it, you will need a new line though since the flare is bigger than the nut and you can not get the nut on with a flare already on. You will also need to bend it in that nifty curly shape if it is the line I am thinking of.

 

[manuelku]

someone told me to get a flare wrench and spray some PB blaster and set it like 5 mins and it will come out..

btw, the bolt is not all the way stripped, just one corner is kinda off..

 

[SuperSix]

Originally posted by: manuelku
someone told me to get a flare wrench and spray some PB blaster and set it like 5 mins and it will come out..

btw, the bolt is not all the way stripped, just one corner is kinda off..

I swear by PB Blaster.. Do the above, and worse comes to worse use VERY tight Vise-grips. (You may still ahve to replace the ends of the brake lines) If you don't have the proper tools or know-how - take it to a mechanic.

 

[thedarkwolf]

If you still can't get it off with a flare nut wrench.
Where does the brake line go? Lots of times it just goes down a little bit to some other do hicky and you may just be able to remove it there and replace the whole section.

 

[NutBucket]

Originally posted by: thedarkwolf
If you still can't get it off with a flare nut wrench.
Where does the brake line go? Lots of times it just goes down a little bit to some other do hicky and you may just be able to remove it there and replace the whole section.

That's what I'm thinking. It should be a short section down to the proportioning valve. While a flare wrench might be the best tool for the job the other day I found that my flare wrench simply slipped on the nut I was trying to take off and it worked better for me to use an open end wrench instead.

 

[GRIFFIN1]

You will probably have to buy a new brake line anyway. If you do manage to cut the nut off without messing up the line, then you will not be able to just put a new nut on there when you go to reinstall the master cylinder. In other words, you will not be able to get a new nut over the flared part of the line.

 

[manuelku]

I will try to get the bolt off with pd blaster and a flare wrench.. if not I will get it to a mechanic

 

[Antisocial Virge]

Then after all that your gonna have to bleed the brakes you know?