Removal of brake accumulator; help
I am trying to remove and replace my brake accumulator, but it will not budge. Any advice? Used a ratchet with Allen socket and vice grips holding the base. I’ve read to remove the whole assembly, any tutorials for that?
My brake light and anti-lock illuminates every time I press the brake pedal but only in PARK. When driving it doesn’t light up. In PARK every time I depress brake pedal you can hear the electric motor run for approx 1-2 seconds. When initially putting the key to position two the electric pump runs for approx 1-3 seconds. When driving braking seems fine maybe a little soft but otherwise fine. Is this any cause for concern or should I just leave well enough alone?? Thanks |
If it doesn't light up after cruising along for a while and then when you press the brake and nothing illuminates, it's probably just fine.
Soft pedal is normal, hard pedal is bad (no power assist!) Larry |
I use GIANT channel lock pliers or a band type oil filter wrench along with the socket head wrench.
bob |
Thanks for the help guys! Got it replaced, here are the results: used GM part# 25676065 it was $104 shipped to the house. Screwed right in, on initial key turn the electric motor filled the ball for approx 30-60 seconds. No more lights at all! Brakes are much better. I believe my rear brakes were not engaging with the old accumulator ball.
Here are some pictures of the set-up I used. 1 and 1/8in wrench holding the base of the assembly and a big long breaker bar and Allen socket. Broke loose on the first try and was able to unscrew by hand after. I did give it a small shot of liquid wrench the night before not sure if that helped as well. https://cimg7.ibsrv.net/gimg/www.jag...798f4ddd7.jpeg GM part number 25676065 on the left. I’m assuming original one one the right, that’s the one that came off the car https://cimg9.ibsrv.net/gimg/www.jag...10d42c88a.jpeg 1 and 1/8inch wrench holding the assembly https://cimg2.ibsrv.net/gimg/www.jag...aa8247c7f.jpeg https://cimg5.ibsrv.net/gimg/www.jag...59ffcb88c.jpeg Didn’t take a picture of the old accumulator ball but here is the GM one installed |
What did you do with the accumulator to take the pressure out of it prior to unscrewing? This worked on the 91 sovereign ok? Asking because mine is a 91 sovereign vin 658822
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KEY OFF, pump the pedal till you leg muscles get tired.
Remove accumulator, |
I just changed mine. Was expecting a project of it, what with all the things to disconnect if I was going to have to pull the whole assembly & put it in the vise. Instead, I shimmed the assembly tight in place with wood bits so it was locked in position. One good grunt & she's loose!:icon_banana: Directions with replacement ball referred to adding new fluid to the accumulator reservoir, I assumed that's the ball itself. What little went in, dripped back out upon installation. Road test! I have brakes like I've never had before in the 9 years or so of owning "Bigkitty". Just a slight left pull sometimes, & the brake light still lights upon activation of pedal. Next up is whole system bleed, as the fluid is ???years old & a bit dark. So a successful half-hour under the bonnet, we're both happy.
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Originally Posted by catmanboo
(Post 2410333)
Just a slight left pull sometimes, & the brake light still lights upon activation of pedal.
Once potential cause of the BRAKE light coming on when you press the pedal is a brake pad wear sensor is worn and grounding against the rotor when you activate the brakes. Cheers, Don |
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