Major brake issues, help please - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**tdangle** · 10-09-2018, 12:30 AM

If you have fluid coming out of the hoses at the rear calipers when they are disconnected but none or very little coming out of the rear caliper bleed screw I think there is a problem with the rear calipers. Manufacturing defect?? I'd take them apart and verify all is good with the fluid path.

**Steeveedee** · 10-09-2018, 09:48 AM

Have you adjusted the rear calipers so that the pads are almost touching the rotors? If you try to bleed them without the resistance of the pad to rotors, you could just be cycling the pistons in the calipers. I'm not intimately familiar with rear discs, but I've seen where not being properly adjusted was an issue. The fronts don't use a parking brake for the take-up due to wear, like the rears do.

88Stanger · 10-10-2018, 12:01 AM

Steevee, I did not, but out of just dire want, i just ordered the Wilwood rear conversion and front disc brakes. Always wanted them, so now is a good time to "justify" it to myself. Lol

OL SKOOL · 10-10-2018, 04:56 PM

The emergency brakes have to be adjusted up on rear disc brakes. You will get weak fluid flow and you will be able to turn rear brakes with pedal pushed. Don't ask me how I know this 3 day disaster. I can't tell you what to do but I can tell you what not to do!

Andy4639 · 10-10-2018, 06:54 PM

I can't speak for the Wilwood brakes but the CPP rear disc brakes suck! I hate I ever spent the money on them. I never have gotten them to work as good as my old drums did. I have spent weeks on them adjusting them and bleeding them. They are the worst upgrade I ever done.

88Stanger · 10-12-2018, 01:32 AM

Quote:

Originally Posted by OL SKOOL

The emergency brakes have to be adjusted up on rear disc brakes. You will get weak fluid flow and you will be able to turn rear brakes with pedal pushed. Don't ask me how I know this 3 day disaster. I can't tell you what to do but I can tell you what not to do!

Well that unfortunately sounds like it could be the issue, as we have done everything else. But, I did buy all new 2 piston wildwood for rear and front. That way I'm all Wilwood.
Thanks for all the input. Maybe it will help others

10-09-2018, 12:30 AM	#1
tdangle Senior Member Join Date: Mar 2005 Location: Jurupa Valley, Ca Posts: 1,210	Re: Major brake issues, help please If you have fluid coming out of the hoses at the rear calipers when they are disconnected but none or very little coming out of the rear caliper bleed screw I think there is a problem with the rear calipers. Manufacturing defect?? I'd take them apart and verify all is good with the fluid path. __________________ Terry 1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC

10-09-2018, 09:48 AM	#2
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,132	Re: Major brake issues, help please Have you adjusted the rear calipers so that the pads are almost touching the rotors? If you try to bleed them without the resistance of the pad to rotors, you could just be cycling the pistons in the calipers. I'm not intimately familiar with rear discs, but I've seen where not being properly adjusted was an issue. The fronts don't use a parking brake for the take-up due to wear, like the rears do. __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA

10-10-2018, 12:01 AM	#3
88Stanger Registered User Join Date: Mar 2015 Location: Washington State Posts: 1,644	Re: Major brake issues, help please Steevee, I did not, but out of just dire want, i just ordered the Wilwood rear conversion and front disc brakes. Always wanted them, so now is a good time to "justify" it to myself. Lol

10-10-2018, 04:56 PM	#4
OL SKOOL Registered User Join Date: Feb 2010 Location: rochelle il. Posts: 356	Re: Major brake issues, help please The emergency brakes have to be adjusted up on rear disc brakes. You will get weak fluid flow and you will be able to turn rear brakes with pedal pushed. Don't ask me how I know this 3 day disaster. I can't tell you what to do but I can tell you what not to do!

10-10-2018, 06:54 PM	#5
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: Major brake issues, help please I can't speak for the Wilwood brakes but the CPP rear disc brakes suck! I hate I ever spent the money on them. I never have gotten them to work as good as my old drums did. I have spent weeks on them adjusting them and bleeding them. They are the worst upgrade I ever done. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.



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