![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
|
![]() |
#1 |
Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
|
Bleeding brakes for the first time...need help
I put a new passenger side rear wheel cylinder in my truck today, b/c the old one was leaking brake fluid pretty bad. I got the old one out, put the new one in, and went to bleed the brakes. I pumped the pedal a couple times, with the engine off (truck has PB). After all the vaccum was out of the lines, i had a friend hold down the brake pedal and i opened the bleeder valve. Some air and some brake fluid came out. Anyway, we did this a couple times, until i accidently left the bleeder valve open as my friend let off the brake pedal. Now, when i try to bleed them, no or very little brake fluid comes out. When we took off the master cylinder cap, and slowly pressed down on the brake pedal, air bubbles come up. So....what is the easiest way for me to fix this? Just keep pressing the brake pedal slowly over and over until air bubbles stop comming out of the master cylinder, or is there an easier way? Right now, the brake pedal is super mushy, and the rear brakes don't work at all.
__________________
'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg |
![]() |
![]() |
![]() |
#2 |
FARMER/RANCHER
Join Date: Apr 2001
Location: SD
Posts: 597
|
Ok first try the easy way. fill up the resevoir with brake fluid, leave the top off and crack the bleeder screw on the rears. You probably have air in all the lines now so you will have to take the front bleeders off also. try just letting it gravity bleed for a while and if this doesn't work write back again........
__________________
1972 chevy super, long box, 402 big block (2,000 miles on rebuild) 2wd tach, tilt, tool box on bedside, a/c, sliding rear window, orange and white. 1972 Chevy Blazer 2wd, tach, tilt, a/c, my first engine overhauling experience, Orange, with white top 2006 Gmc Sierra, XM, Z-71, dark blue, onstar, leather, rear entertainment (audio only) heated seats, (the wife loves that feature) upgraded tires immediately after purchase to Goodyear Wrangler AT/S (hate those rock throwers that come from the factory) BWC |
![]() |
![]() |
![]() |
#3 |
Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,525
|
what I do rather than loosening and tightening the bleeder valve is just run hose into a bottle with a litte extra brake fluid in it. This way you just keep pumping the brake untill you don't see any air bubbles.
|
![]() |
![]() |
![]() |
#4 |
Registered User
Join Date: Jul 2000
Location: Auburn,Ca USA
Posts: 369
|
brakes
Back to basics. Bleed the master. Put a rag around the fittings and crack the lines on master as buddy SLOWLY pushes pedal. Get clear fluid and then go to rt rear, left rear , rt front then left front. Take your time and make sure you keep fluid in m/c while bleeding.
__________________
68 Chevy l/b, 4 whl disc in the foothills of No Calif |
![]() |
![]() |
![]() |
#5 |
Registered User
Join Date: May 2002
Location: Oakley, Ca. USA
Posts: 137
|
On a side note - it's good practice to replace both wheel cylinders at the same time - if ones bad, the other is not far from failing....
__________________
Rudy Fierros '95 Honda VFR750F Used to have a '71 Chevy Stepside, Guards Red, Lowered 4" rear, 3" front, White Oak bed wood, 700R4 w/373 gears until some low life stole it! |
![]() |
![]() |
![]() |
#6 |
Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
|
Thanks for the help. I kept trying to bleed them, but after taking out what seemed like 5 gallons of air, the problem was found. To remove the wheel cylinder, i had to grind off one of the bolts on the backing plate (it was rounded off). Well, in the process i accidently touched the brake fitting with the grinder. After i put it in, it was letting air seep in. So, i will get a new hard brake line tomorrow and see how it works. I have the other wheel cylinder, but if the brakes don't pull to one side after i get them properly bled, i won't bother installing it just yet.
__________________
'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg |
![]() |
![]() |
![]() |
Bookmarks |
|
|