Master cylinder question
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Drifting
Joined: Mar 2002
Posts: 1,876
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From: cincinnati ohio
Cruise-In V Veteran
Master cylinder question
Can a new master cylinder be installed without bleeding the brake system?I thought I have heard of this a long time ago but I can't remember for sure.If it can be done how do I go about it?
Le Mans Master
Joined: Oct 2003
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From: Director of Bands
St. Jude Donor '08
Technically, there is a way you can swap it without doing a full bleed. But I wouldn't.
Here it is straight out of Richard Newton's "101 Projects for Your Corvette" book:
"Now that you have the new master cylinder in place, you want to bleed the final amount of air out of the unit. There's a trick here tha your local Corvette shop probably never showed you. Get your buddy to sit in the car as you loosen one of the master cylinder line fittings so that a little luid leaks out. Now have him push the brake pedal slowly to the floor. Now repeat this with the other brake line.
Any air in the master cylinder will be expelled before it gets to the brale lines that go to the corners of the car. Do this with both the front and rear brake lines about three times. Just remember to close the brake line before your friend lets the brake pedal return. If you do this correctly, you won't have to bleed the individual calipers."
I chose not to do this, but to rather bleed all four corners after the install. That way I knew for sure that there was no air in the lines and I knew that there was fresh brake fluid from the MC to the calipers.
Hope this helps...
-Ed
Here it is straight out of Richard Newton's "101 Projects for Your Corvette" book:
"Now that you have the new master cylinder in place, you want to bleed the final amount of air out of the unit. There's a trick here tha your local Corvette shop probably never showed you. Get your buddy to sit in the car as you loosen one of the master cylinder line fittings so that a little luid leaks out. Now have him push the brake pedal slowly to the floor. Now repeat this with the other brake line.
Any air in the master cylinder will be expelled before it gets to the brale lines that go to the corners of the car. Do this with both the front and rear brake lines about three times. Just remember to close the brake line before your friend lets the brake pedal return. If you do this correctly, you won't have to bleed the individual calipers."
I chose not to do this, but to rather bleed all four corners after the install. That way I knew for sure that there was no air in the lines and I knew that there was fresh brake fluid from the MC to the calipers.
Hope this helps...
-Ed
Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
Originally Posted by eschoendorff
Technically, there is a way you can swap it without doing a full bleed. But I wouldn't.
Here it is straight out of Richard Newton's "101 Projects for Your Corvette" book:
"Now that you have the new master cylinder in place, you want to bleed the final amount of air out of the unit. There's a trick here tha your local Corvette shop probably never showed you. Get your buddy to sit in the car as you loosen one of the master cylinder line fittings so that a little luid leaks out. Now have him push the brake pedal slowly to the floor. Now repeat this with the other brake line.
Any air in the master cylinder will be expelled before it gets to the brale lines that go to the corners of the car. Do this with both the front and rear brake lines about three times. Just remember to close the brake line before your friend lets the brake pedal return. If you do this correctly, you won't have to bleed the individual calipers."
I chose not to do this, but to rather bleed all four corners after the install. That way I knew for sure that there was no air in the lines and I knew that there was fresh brake fluid from the MC to the calipers.
Hope this helps...
-Ed
Here it is straight out of Richard Newton's "101 Projects for Your Corvette" book:
"Now that you have the new master cylinder in place, you want to bleed the final amount of air out of the unit. There's a trick here tha your local Corvette shop probably never showed you. Get your buddy to sit in the car as you loosen one of the master cylinder line fittings so that a little luid leaks out. Now have him push the brake pedal slowly to the floor. Now repeat this with the other brake line.
Any air in the master cylinder will be expelled before it gets to the brale lines that go to the corners of the car. Do this with both the front and rear brake lines about three times. Just remember to close the brake line before your friend lets the brake pedal return. If you do this correctly, you won't have to bleed the individual calipers."
I chose not to do this, but to rather bleed all four corners after the install. That way I knew for sure that there was no air in the lines and I knew that there was fresh brake fluid from the MC to the calipers.
Hope this helps...
-Ed
