brake cyl and master cyl replacement

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brake cyl and master cyl replacement

Post by JGL on Thu Dec 07, 2017 5:32 pm

I plan to change the 2 rear brake cylinders and the aging master cylinder too on my 76 Dart Sport 360 with 8.25 rear. I would like to drain the old brake fluid so what do I do first, second...
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Re: brake cyl and master cyl replacement

Post by philcollins on Fri Dec 08, 2017 7:30 am

Remove your brake cylinder, then unscrew the bleeders on front calipers. Remove the master cyl, use air to remove all remaining fluid.. Then reinstall eveything and bleed.
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Re: brake cyl and master cyl replacement

Post by Keith Mopar on Fri Dec 08, 2017 8:10 am

Don't forget to bench bleed the new master before installing it.
I personally use dot4 fluid. It mixes with dot 3 and it has a higher resistance to moisture as your car like mine sits all winter long and that stuff doesn't hurt paint like the dot 3 stuff.

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Re: brake cyl and master cyl replacement

Post by JGL on Mon Dec 11, 2017 6:32 am

philcollins wrote:Remove your brake cylinder, then unscrew the bleeders on front calipers. Remove the master cyl, use air to remove all remaining fluid.. Then reinstall eveything and bleed.

I don't have a compressor and can't blow that hard.

Keith, what is bench bleeding a master cylinder?
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Re: brake cyl and master cyl replacement

Post by mikes mopar on Mon Dec 11, 2017 7:16 am

Here is a youtube video on bench bleeding. very easy to do.
https://www.youtube.com/watch?v=kEPXgDGU6_0
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Re: brake cyl and master cyl replacement

Post by Keith Mopar on Mon Dec 11, 2017 7:22 am

Thanks Mike, yea it is essential that you do that. If not it takes forever to get all the air out of the system when bleeding.

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Re: brake cyl and master cyl replacement

Post by Ragtacker on Mon Dec 11, 2017 6:04 pm

And if you are like me keep some rags close as one of the tubes got loose on me and there was brake fluid everywhere on the bench, not a good thing in an upholstery shop lol
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Re: brake cyl and master cyl replacement

Post by JGL on Mon Dec 11, 2017 6:45 pm

Ragtacker wrote:And if you are like me keep some rags close as one of the tubes got loose on me and there was brake fluid everywhere on the bench, not a good thing in an upholstery shop lol


I don't have a bench so I am going to have to figure something out.
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Re: brake cyl and master cyl replacement

Post by Ragtacker on Mon Dec 11, 2017 6:55 pm

Oh hell kitchen counter it is, I`m sure Jaqueline will understand
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Re: brake cyl and master cyl replacement

Post by smoken340 Yesterday at 5:02 am

Be careful not to get brake fluid on any painted surfaces, like your fenders. Brake fluid is one of the best paint removers ever made.

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Re: brake cyl and master cyl replacement

Post by JGL Yesterday at 6:09 am

smoken340 wrote:Be careful not to get brake fluid on any painted surfaces, like your fenders. Brake fluid is one of the best paint removers ever made.

I know you should see my firewall just below the master cylinder, but I will be using dot 4 which Keith told me was not as hard on the paint.
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Re: brake cyl and master cyl replacement

Post by philcollins Today at 7:58 am

JG, do you have flare nut wrench?
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Re: brake cyl and master cyl replacement

Post by JGL Today at 10:41 am

philcollins wrote:JG, do you have flare nut wrench?

NO, At least I don't think so.
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