Click on image for the lowdown. 
====
| | | Forums66 Topics128,026 Posts1,055,403 Members48,422 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Oct 2013 Posts: 23 New Guy | | New Guy Joined: Oct 2013 Posts: 23 | I have a power brake boost master combo in the original location. mustang II front disc brakes, gm drum brakes rear. i do have residual check valves in place but no proportioning valve on the rear brakes. I have carefully pumped at least two quarts of brake fluid through the system and still no pressure at the pedal. i have adjusted the rear drums and see no air coming out of the tubes as the fluid is going into the catch bottle. Any thoughts? | | | | | Joined: Feb 2004 Posts: 29,747 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,747 | Are you using a new, used, or rebuilt master cylinder? Some rebuilt MC's are just plain junk, right out of the box. Also, did you "bench bleed" the master cylinder to make sure it doesn't have an air lock in one or both of the chambers?
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Jan 2015 Posts: 914 'Bolter | | 'Bolter Joined: Jan 2015 Posts: 914 | Yes one should always bench bleed a master cylinder before installation.
Jeffrey
Last edited by 32vld; 07/13/2015 3:51 AM.
| | | | | Joined: Mar 2008 Posts: 3,750 'Bolter | | 'Bolter Joined: Mar 2008 Posts: 3,750 | I'll second the bench bleed suggestions.
fore,i've been running a similar set-up,except I have discs on the rear. I have NO proportioning valve,i've had a couple of panic braking situations and have had no issues with rear wheel lock-up.
Last edited by jockbolter50; 07/13/2015 11:32 AM.
1950 Chevy Advance Design 3100 in ScotlandIn the Stovebolt GalleryMore pix on Flickr. I've definately got this truck thing in my blood ... my DNA sequence has torque settings"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.
| | | | | Joined: Jan 2015 Posts: 39 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2015 Posts: 39 | Are the bleed plugs on the disc calipers on top or bottom? If the bleed plugs are not installed at the top of the caliper air pockets will form in the piston chamber and no MC pressure. It is possible to install calipers on the wrong side which will cause the bleed plugs to be on the lower end of the caliper. If this sounds a little convoluted I apologize maybe Hotrod will explain it better.
Tim White
49 Chevy panel
91 Jeep YJ
| | | | | Joined: Dec 2000 Posts: 3,399 Gas Pumper | | Gas Pumper Joined: Dec 2000 Posts: 3,399 | You can also get Speed Bleeders for each corner. I really like how they work and it saves me from needing another person to bleed brakes properly. | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | I also use speed bleeders, but a one-person bleed job is also quite easy using this $6.00 one-person brake bleeder kit. | | | | | Joined: Aug 2000 Posts: 1,438 'Bolter | | 'Bolter Joined: Aug 2000 Posts: 1,438 | I've got the same bleeder Tim. It works great. I also got this kit for bleeding the master cylinder. I like it as well. http://www.classicperform.com/Store/Tools/CPBK.htmDennis
40 Chevy 1/2 ton
| | | | | Joined: Oct 2013 Posts: 23 New Guy | | New Guy Joined: Oct 2013 Posts: 23 | got em bled, my wife helped out since my son had football practice, just gotta hook up the vacuum line to intake/booster.
gonna rub it over to the muffler shop next week for exhaust, then some new wheels n tires - should be ready to roll!
bleeding seemed to go better after I ran a tube from the bleed screw into a bottle half full of fluid so no air got back in before i got the fockers closed. sorry I'm rambling, scotch is talking now thanks for your help and advise. | | |
|
|
