Heeeelp!!! I have a local cop friend with a GN also. He had a local shop do a front brake job today. The pedal went to the floor afterwards and they bled them with no results. Whats wrong? They are stumped and he is naturally worried. What went wrong? What is needed? Huge thanks.
Hydroboost question ASAP?
- Thread starter davidf
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Thats normal the first time the brake pedal is pressed after a brake job.
After a couple pumps, it should be fine.
After a couple pumps, it should be fine.
TurboTnZ06
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Rod popped off the brake pedal?
Low on power steering fluid?
Low on power steering fluid?
Yes I am %#@&*^!:redface: The story has changed since. Just got off the phone and it was the rear shoes that were changed, not from pads. This kinda changes everything. I've changed many many rear shoes with rarely having pumping issues. He's sweating bullets about having to buy a reman'd powermaster. Sorry for the huge typeo!:redface:
novaderrik
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if the rear shoes aren't adjusted out properly, the pedal could go waaaay down to the floor until you pump it a few times and the rods actually push the shoes out against the drums. then, if you let the pressure bleed off, the shoes wil lcompletely retract and it will feel like no brakes again.
the solution is to get under the car with a screwdriver andcrank out the star wheels until the shoes have a slight drag on the drums, then do a few hard stops in reverse to get the shoes to self adjust.
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the solution is to get under the car with a screwdriver andcrank out the star wheels until the shoes have a slight drag on the drums, then do a few hard stops in reverse to get the shoes to self adjust.
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Hey Guys, My customer referred me to your site to find answers to some of the questions on his GN, Let me first say that after spending a hour or so reading your forum that you guys know these cars front to back and top to bottom and I am impressed..... Thanks for sharing your knowledge. The GN in question was in my shop for engine repair and he also said check the brakes they are fading....... Front looks great and rear shoes had plenty of meat but were crystallized; The drums turned and are still in spec. wheel cylinders were great with no leakage so we replaced shoes, adjusted and should have been done...... Test drive shows good peddle but brakes fade to the floor with very little pressure ..... No leaks in system and I suspect master cylinder is bypassing due to contamination of fluid..... Cure replace master cylinder ..... COST is making me second guess the failure but I know that it is what it is regardless of cost !!! There is some other conversions that will work and I will let you know, Thanks again, Steve
Try shimming the master away from the booster with a couple washers. You wont have to disconnect the brakes lines to do this. Start with 2 washer and see if there is an effective change. Then try with one washer for another effective change. Sometimes the piston in the reman Masters arent set to the correct depth causing the port to only be open for a short time before it compresses the fluid.
What method did you use to bleed the brakes? Bleed them with the pedal all the way through the system, the old fashion way. I've seen sooooo many people think they have the brakes bled and search for things that may be wrong, spending more money, and it ends up just needing to be bled with the pedal.
What method did you use to bleed the brakes? Bleed them with the pedal all the way through the system, the old fashion way. I've seen sooooo many people think they have the brakes bled and search for things that may be wrong, spending more money, and it ends up just needing to be bled with the pedal.
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