Question about long tube method of brake bleeding |
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Question about long tube method of brake bleeding |
computers4kids |
Nov 26 2011, 10:42 AM
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#1
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Love these little cars! Group: Members Posts: 2,443 Joined: 11-June 05 From: Port Townsend, WA Member No.: 4,253 Region Association: None |
I have some air trapped in my brakes and want to try the long tube method to purge. With the tubes in the resevoir and connected to each caliper nipple, I understand the idea of cracking each nippple open and pumping until the cows come come.
What puzzles me is the idea of injecting air back into the system using this method. Until the lines are full of fluid, won't you be sucking air on each pump of the brakes back throuh the nipple from the empty tubes? I have a motive bleeder but can't seem to get all the air out. It takes a couple pumps to get a hard pedal. New MC All new rebuilt calipers, etc Used the pedal pump and release method Flushed a 1/2 gallon of fluid throuh the calipers Rear vented to .004 Driven the car and repeated the bleeding with motive and two people Yes, the front caliper nipples are pointed up No speed bleeders (IMG:http://www.914world.com/bbs2/uploads/post-419-1182989448.jpg) |
computers4kids |
Nov 28 2011, 08:54 AM
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#2
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Love these little cars! Group: Members Posts: 2,443 Joined: 11-June 05 From: Port Townsend, WA Member No.: 4,253 Region Association: None |
Driven the car and repeated the bleeding with motive and two people (IMG:style_emoticons/default/idea.gif) Well, the car has been about 10 miles all together on side roads doing all the brake in steps suggested to bed the pads. Your suggestion and the one earlier makes me wonder now. I have the car to what I thought was a good hard pedal on two separate occasions until I put the wheels back on and drove it--assuming that trapped air bubbles were the culprit. I decided to go ahead and bed the pads to the new rotors before I would try to bleed again. So if the pistons are being pulled back too far, then the couple of pumps for a hard brake makes sense. If this is the case, how long does it normally take to normalize? The plywood option sounds interesting as well. Mark |
ArtechnikA |
Nov 29 2011, 05:34 AM
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#3
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rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
If this is the case, how long does it normally take to normalize? The plywood option sounds interesting as well. The standard rule of thumb was "a hundred miles." That car looks like it might not get driven in traffic much... The thread I referred to earlier is here: Front End Changeover The brake issue shows up around the middle of page 2. |
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