View Single Post
Old 09-08-2018, 10:03 PM   #23
adavis
Senior Member
 
adavis's Avatar
 
Join Date: Apr 2012
Location: Washington State
Posts: 289
Default Re: 1940 brake issue....

So I have an update. I swapped the front drums with a pair of freshly turned drums that measure 12.050". I pulled the master cylinder and bench bled it. After I reinstalled the MC I bled the system starting with the right rear wheel. Using speed bleeders I'm able to do everything by myself with the car on my lift. I can pump the brake pedal by pulling down on the arm from under the car....giving me the ability to watch the clear line I attach to the bleeder. It took about 25 slow pumps to get completely bubble-free fluid out of the right wheel cylinder. Moving to the left rear cylinder it only took about 10 pumps. Right front was about 10 and left front was about 3.

After all was done I can say that the brakes are as good as I would ever expect original 1940 drums brakes to be. The pedal is firm each press and feels very solid. I have found an old Ammco brake shoe arc-ing machine and will be picking it up in a week or so. When I get that machine I'll double check the shoes just to make sure, but right now I'd consider the brakes good.

Thanks everyone for the information and advice. I'd say that the problem was a culmination of several things....from brake adjustment to bench bleeding the master cylinder to starting at the right rear wheel when bleeding the system.

Sent from my SM-G960U using Tapatalk
adavis is offline   Reply With Quote