 Rebuilt Brake Caliper and...Pedal goes to the floor? |
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| atomix8 |
 Aug 16 2015, 11:14 AM
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Member  Group: Members Posts: 73 Joined: 10-September 07 From: Annapolis, MD Member No.: 8,105 Region Association: MidAtlantic Region  |
Have been battling this problem myself for a few weeks...and realizing I just missed the annual Northeast meet up, and am about to miss 2 more car shows... I think I have finally tried everything I can personally think of -- I need help!
Long story short, I hope: Front right caliper was dragging a little bit, figured I'd rebuild before it got worse. Took the caliper off and lost a bit of fluid, still plenty in the master cylinder. Had trouble getting the pistons out, so ended up using the "grease gun trick", not recommended but it worked. Cleaned up the caliper with tons of brake clean, put in new seals, pressed pistons back in, indexed them and bolted it back up. Then the saga of bleeding: 1. Did the "two man" brake bleeding method at first on just the rebuilt caliper...and couldn't get a hard pedal. 2. Did "2 man" on all 4 calipers -- pedal still soft. 3. Put on the Motive power bleeder, burst a hose on the motive...cleaned up a fountain of brake fluid 4. Actually bled all 4 with the Motive (new hose) -- pedal still soft. 5. Drove around the block, had to pump the brakes like heck to stop -- no change. 6. Had a friend 'pump up' the brakes and then 2 man bled the fronts -- no change. Other relevant facts: A. Before I started this adventure, I had a great hard pedal. B. Brake fluid squirts out of all calipers when I bleed, so I don't suspect a master cylinder issue (should I?) C. Rear brake pads are worn on one side, but seems unrelated...again pedal was great. So, what the heck am I forgetting?? (IMG:style_emoticons/default/confused24.gif) |
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| stugray |
Aug 16 2015, 02:49 PM
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Advanced Member Group: Members Posts: 3,824 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
Another common error is putting the calipers on the wrong sides and having the bleeders at the bottom of the calipers.
You are bleeding from bleeders at the TOP of each caliper? Some calipers have both top & bottom and people bleed from the first one they see. |
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| Chris H. |
Aug 16 2015, 08:13 PM
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#3
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Senior Member Group: Members Posts: 4,031 Joined: 2-January 03 From: Chicago 'burbs Member No.: 73 Region Association: Upper MidWest 
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QUOTE(stugray @ Aug 16 2015, 03:49 PM)  Another common error is putting the calipers on the wrong sides and having the bleeders at the bottom of the calipers. You are bleeding from bleeders at the TOP of each caliper? Some calipers have both top & bottom and people bleed from the first one they see. I did this once. Bled ONLY the bottom rears for DAYS. Once I found the TOP REARS and bled those I had the firmest pedal ever. |
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Posts in this topic
atomix8 Rebuilt Brake Caliper and...Pedal goes to the floor? Aug 16 2015, 11:14 AM
stugray I have read MANY of these threads and just went th... Aug 16 2015, 11:54 AM Mikey914 Also the URO master cylinders are $hit. I did... Aug 16 2015, 11:58 AM Cuda911 Hmmmm.... just had brakes redone in my '73 a w... Aug 16 2015, 12:02 PM atomix8 Appreciate the quick replies guys.
I had heard ... Aug 16 2015, 12:16 PM
Bartlett 914
Appreciate the quick replies guys.
I had heard... Aug 16 2015, 01:13 PM GeorgeRud I will also attest to the bumpy ride then bleed ag... Aug 16 2015, 12:54 PM nukepipe Once I have a hard time bleeding the clutch line, ... Aug 16 2015, 06:15 PM mgp4591 I thought I'd mention this because I haven... Aug 16 2015, 06:28 PM Vacca Rabite Chris and Stu are on the ball.
Check to make sure ... Aug 17 2015, 10:51 AM atomix8 Thanks again for all the advice. Will climb under... Aug 17 2015, 06:48 PM Jeffs9146
Thanks again for all the advice. Will climb unde... Aug 17 2015, 07:08 PM atomix8 Well, did everything I promised.
Bled the lines ... Aug 28 2015, 06:46 PM cwpeden You don't suppose one of the hoses could be ba... Aug 28 2015, 07:24 PM |
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