New rear PMB alloy calipers. Now no break pressure |
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New rear PMB alloy calipers. Now no break pressure |
Downerman |
Sep 17 2014, 04:57 PM
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#1
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Member Group: Members Posts: 168 Joined: 23-April 09 From: Monterey County, California Member No.: 10,296 Region Association: None |
OK, OBVIOUSLY no negative to the calipers. Here's the deal..... removed the 911 rear calipers (well for that matter the entire swing arms) but I just let the brake fluid lines hang and drain into jars. Finally got my swing arms mods done and now putting on the new calipers. Filled the brake resevoir up and had all 4 wheels off the car. Used my handy dandy brake sucker pump and had fluid running to all four bleeders on the rear (2 each for a caliper) and then did the fronts. Had to refill a couple of times because I was pulling some darker fluid until it was clear. Went into the cab and hit the breaks. Nothing.... I mean NADA. Pumped like a 100 times to no avail.
RE-DID the entire process again. NADA and I mean nothing. So, I'm wondering if my master has gone south in this time line?? and why?? Seems the only logical answer at this point. Anyone have any ideas? Dave |
IronHillRestorations |
Sep 23 2014, 07:41 AM
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#2
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I. I. R. C. Group: Members Posts: 6,719 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None |
Pressure bleeding is the only way to go.
Here's what I posted back in Mar 05. Get a spare cap for the brake fluid reservoir. Get a tire valve & stem. Drill a hole in the center of the reservoir cap, the same size as the hole in a wheel (or measure the narrow part of the tire valve). Pull the valve stem through the hole. Remove the plastic screen in the reservoir. Fill the brake reservoir completely, not to the fill line, all the way full to the bottom of the tube that holds the plastic screen. Put on your new modified pressure bleeder cap. Drain your air tank to 10 psi, for cheaper compressors setting the regulator at 10 psi may not work. If you put too much pressure in the system, you'll blow off the blue lines that connect the supply lines to the reservoir, or worse. Take a clip on air chuck and clip it on your new pressure bleeder cap. Bleed the brakes, starting at the furthest bleeder from the master cyl, and finish at the bleeder nearest the master cyl. Bleeding sequence (LR-RR-LF-RF) Pump the pedal hard about ten times and repeat the procedure. Do not get brake fluid on painted surfaces it will ruin them. If the pressure bleeder cap retains pressure, bleed it down before taking it off the reservoir. This works very well, and makes it a one person job. Replace brake fluid every two years. Properly discard used brake fluid. |
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