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#57248 03/03/2006 12:04 AM | Joined: Aug 2004 Posts: 56 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2004 Posts: 56 | Hey Guys,
I finished installing and bleeding the brake lines and master cylander on my '40 GMC. Problem is I cant get much response when pressing the pedal unless I pump the pedal. I have bled the lines and can see no problem there. The system has a new rebuilt single cylander master. What am I doing wrong or is this typicle of these systems?
G. Lee | | |
#57249 03/03/2006 12:14 AM | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | do you have all wheels adjusted up properly, slight drag?
Bill | | |
#57250 03/03/2006 12:16 AM | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | When these brakes are right there is practically no movement on the brake pedal. You just apply pressure. Each wheel has 2 adjusters. They both are right hand threads so turn in opposite directions. It,s hard to understand which way to turn the starwheels unless you see a wheel cylinder. Adjust each adjustment till you get a heavy drag. Then back it up 2-4 notches. If you still have a low pedal you may still have air in the system. Make shure the pedal has a little free play before it starts pushing the master cyl. piston.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
#57251 03/03/2006 2:04 AM | Joined: Dec 2003 Posts: 975 Shop Shark | | Shop Shark Joined: Dec 2003 Posts: 975 | gelee,
just chiming in on what red and W.B.R. said. I messed around for days until I opened the shop manual and figured out that I did not have the brakes adjusted correctly.
I adjusted as described above and they worked like a charm. | | |
#57252 03/03/2006 2:32 AM | Joined: Mar 2004 Posts: 3,068 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 3,068 | Sometimes when I redo a brake system, I adjust all of the brakes up tight which means BOTH shoes per wheel. Then I bleed them until the air is gone. It will give you a better idea of how much air is still in the system when you know the brakes are already to their limits. Sometimes you'll need to adjust your master to pedal linkage too,
Scott | | |
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