mp470 Posted March 31, 2019 Share Posted March 31, 2019 Hi all, Big red is coming out for the spring and i have no brakes. The larger part of the reservoir was empty for some reason and I have replenished it. Did not see any leaks at the master cylinder though. The pedal goes to the floor only when the vehicle is running but pumps up fine when off. I did a stupid thing and left the e-brake on all winter so the light is on but I don't think it's related. Please and thanks for any suggestions. Link to comment Share on other sites More sharing options...
Gary Lewis Posted March 31, 2019 Share Posted March 31, 2019 You might want to read this post, or the whole thread for that matter. As for the e-brake, sometimes that moves the shoes out so far it lets the pistons get into a rusted area of the brake cylinder, and causes leaks to start. Link to comment Share on other sites More sharing options...
mp470 Posted April 2, 2019 Author Share Posted April 2, 2019 You might want to read this post, or the whole thread for that matter. As for the e-brake, sometimes that moves the shoes out so far it lets the pistons get into a rusted area of the brake cylinder, and causes leaks to start. Thanks. I suspect the master cylinder seals went from the extreme cold of our winters (-40C at times) and it's leaking internally as I didn't see any leaks at the wheels either. Link to comment Share on other sites More sharing options...
Gary Lewis Posted April 2, 2019 Share Posted April 2, 2019 Thanks. I suspect the master cylinder seals went from the extreme cold of our winters (-40C at times) and it's leaking internally as I didn't see any leaks at the wheels either. That might do it. I think I'd lose my seals at that temp. Link to comment Share on other sites More sharing options...
mp470 Posted April 22, 2019 Author Share Posted April 22, 2019 That might do it. I think I'd lose my seals at that temp. New cylinder did it, leaked out internally and through the rear. When bleeding the two rear brakes, couldn't get much to come out though. It wasn't a dribble but not the powerful flow I'd expect with as much vacuum as was applied. Tried with a vacuum pump to 20-25 psi and the manual method. Couldn't do the fronts as they face forward for some reason and had no way to get wheels off out there. Nonetheless, the pedal is good enough for the road now. Link to comment Share on other sites More sharing options...
Gary Lewis Posted April 22, 2019 Share Posted April 22, 2019 New cylinder did it, leaked out internally and through the rear. When bleeding the two rear brakes, couldn't get much to come out though. It wasn't a dribble but not the powerful flow I'd expect with as much vacuum as was applied. Tried with a vacuum pump to 20-25 psi and the manual method. Couldn't do the fronts as they face forward for some reason and had no way to get wheels off out there. Nonetheless, the pedal is good enough for the road now. Did you bleed the master itself? See Page 12 here: Driveline/Brakes and on the Factory Shop Manual tab and then the General Brake Service tab. (That's a new section, so you didn't miss it.) Link to comment Share on other sites More sharing options...
mp470 Posted April 22, 2019 Author Share Posted April 22, 2019 Did you bleed the master itself? See Page 12 here: Driveline/Brakes and on the Factory Shop Manual tab and then the General Brake Service tab. (That's a new section, so you didn't miss it.) I sure did, on the bench before installing. Wish I could've tried the fronts to compare. Link to comment Share on other sites More sharing options...
Gary Lewis Posted April 22, 2019 Share Posted April 22, 2019 I sure did, on the bench before installing. Wish I could've tried the fronts to compare. Ok. Might the fronts be swapped side-for-side? Link to comment Share on other sites More sharing options...
mp470 Posted April 22, 2019 Author Share Posted April 22, 2019 Ok. Might the fronts be swapped side-for-side? Never crossed my mind, are the bleeders supposed to face the rear? Link to comment Share on other sites More sharing options...
Gary Lewis Posted April 22, 2019 Share Posted April 22, 2019 Never crossed my mind, are the bleeders supposed to face the rear? I'll check the shop manual tomorrow to see if it says which way they should point. Link to comment Share on other sites More sharing options...
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