jbc3 Posted August 27, 2008 Share Posted August 27, 2008 I was driving to work this morning. All was good and while at a stop sign, suddenly the brake pedal got hard and basically the power brakes were gone. Major pressure on the pedal still stopped the car. I babied it the last couple of blocks to work and checked the vacuum lines, check valve and fluid levels and all was good, but still no power brakes. I pulled the vacuum line apart at the check valve and put a shop vac on it and still no power brakes. I even bled the brakes and still no power brakes. I have never had power brakes die suddenly like this. Does this sound like the "reaction disk" failure or is this a dead booster? Quote Link to comment Share on other sites More sharing options...
TrumpetRhapsody Posted August 27, 2008 Share Posted August 27, 2008 Sounds like exactly what happened to me about a month ago. New 8.5" booster $110 at Oreilly's solved the problem. I dumped quite a bit of nasty old brake fluid out of the old booster when I took it off. That could have been the problem Quote Link to comment Share on other sites More sharing options...
jbc3 Posted August 27, 2008 Author Share Posted August 27, 2008 I just ordered the larger, 10", booster from RockAuto. 118.79 and $7 to ship. Hopefully that is all that is wrong. 30 year old parts.... and I am "wondering why" there was a failure Jody Quote Link to comment Share on other sites More sharing options...
WizardBlack Posted August 28, 2008 Share Posted August 28, 2008 LUK how it goes... Quote Link to comment Share on other sites More sharing options...
jbc3 Posted August 29, 2008 Author Share Posted August 29, 2008 I received the booster from RockAuto (they deliver fast) and went to install it last night and found the real cause of the problem. As I separated the master cylinder, about an ounce of brake fluid poured out of the booster. So I ordered a master cylinder, it'll be here tomorrow. Thinking back: The day of Mike Kelly's shindig I noticed the level of the brake fluid to the front brakes was a little low. I thought that it was from the S12 caliper volume as the brakes were wearing down some. So I just added some fluid and went about my business... silly me. I bought the 10" booster after reading some old posts saying that the larger booster will fit in the 280's. Well... it does fit, but just barely. Less than 1/8" at most clearance with the clutch master cylinder and it also took re-routing of some of the brake lines, but the fun was just getting the damn thing in place.... My AC lines run in the same area. If all goes well, I'll be driving it again tomorrow. Jody Quote Link to comment Share on other sites More sharing options...
WizardBlack Posted August 29, 2008 Share Posted August 29, 2008 Sweet. Quote Link to comment Share on other sites More sharing options...
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