| |
Labor Day Putting down your wrenches or time for
MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
====
| | | Forums66 Topics128,004 Posts1,055,265 Members48,418 | | 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 2011 Posts: 118 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 118 | have a 48 gmc 1/2 ton, took out original mc and install dual bowl mc, how much of the plunger should go into the mc, new at this brake stuff, cause I bled front driver side, but having problems with other 3. | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy 696969, at rest the pluger should have a slight amount of clearance before it starts to move the master cylinder piston, hope that helps. | | | | | Joined: Oct 2011 Posts: 118 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 118 | it moves in about 3/4 of a inch, as I press in the brake | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy 696969, if you are saying that your plunger moves 3/4" before it starts to push the master cylinder piston, then that is too much clearance. If your saying that the pedal moves 3/4" before it starts to push the master cylinder piston, then your clearance is probably sufficient. There should be 1/16" to 1/8" clearance between the brake linkage plunger and the master cylinder piston when the brakes are released, don't forget to install a return spring on the brake pedal to make sure the linkage returns to its clearance position each time you release the brake pedal, hope that helps. | | | | | Joined: Oct 2011 Posts: 118 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 118 | will look again, thinking maybe didn't bench bleed that well, but my front driver side was okay, just the other 3 were the problem, thanks for info 3B | | | | | Joined: Mar 2013 Posts: 30 New Guy | | New Guy Joined: Mar 2013 Posts: 30 | Did you re-plumb the right front line? | | |
|
|
| |
