Rear caliper
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Joined: Sep 2002
Posts: 57
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From: Gautier ms
Re: Rear caliper (Jvette73)
Got everything cleaned out. Replaced caliper and bled whole system. Power brakes. Now don't have any type of resistance. Pedal goes to floor with foot pressure. Any suggestions
Melting Slicks
Joined: Oct 2001
Posts: 2,064
Likes: 1,382
From: Halifax, Nova Scotia, Canada
Re: Rear caliper (ddwood50)
The rear flex lines (rubber) do go bad. The internal lining of rubber cracks. Line looks good on the outside.
When you apply the brakes, fluid passes the cracks in the line. When the brakes are released, and the fluid returns, the cracked lining can act as a one way valve. A loose piece of rubber will restrict or prevent the fluid from completely releasing the pressure to that wheel.
If you have had the caliper apart and/or replaced, and it still does it, then it is a good chance it is the flex line.
How do I know this ??? I took my rear caliper off twice because it was still applying pressure. It was the flex line.
As for the pedal going to the floor, sounds like air in the system.
Gravety bleeding has worked for me in the past.
When you apply the brakes, fluid passes the cracks in the line. When the brakes are released, and the fluid returns, the cracked lining can act as a one way valve. A loose piece of rubber will restrict or prevent the fluid from completely releasing the pressure to that wheel.
If you have had the caliper apart and/or replaced, and it still does it, then it is a good chance it is the flex line.
How do I know this ??? I took my rear caliper off twice because it was still applying pressure. It was the flex line.
As for the pedal going to the floor, sounds like air in the system.
Gravety bleeding has worked for me in the past.
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Racer
Joined: Apr 2002
Posts: 324
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From: port jefferson station ny
Re: Rear caliper (ddwood50)
if all of the fluid was lost in the master when you changed the caliper, the master may be air bound. tru cracking the line at the master and bleeding the master. if this doesn't bleed out, disconnect the line at the master, put your thumb over the hole (protect all of your car from brake fluid) and have someone slowly depress the pedal. when it his bottom, take your finger off, put it back on and tell them to release the pedal. do this until you feel pressure on your finger. when you feel pressure, have them bottom the pedal again slowly (fluid will tend to shoot out) and when the pedal is at the bottom of it's travel tell them to hold it there while you reconnect the line. after this have them pump up the brake pedal and crack the lines at the master until there are no more air bubbles. then go to each wheel and bleed off the calipers one by one until there is no more air. hope this helps, wcj.
