Adjust brakes?

[cbvet]

We've got two deuces, with very "different" brakes.
1952 M35, has great brakes with only about 2.5" of pedal travel & no sponginess at all.
1970 M35A2 stops okay, but the pedal goes down over 1/2 way. I always pump the brakes a couple of times to build up pedal. I don't like it.
I've bled all the wheels & the booster twice.
What do you guys think?
Might the booster be causing the problem?
Master cylinder worn?
I haven't gone around & adjusted the brakes, I guess just because it's such a pita to do.
Thanks for any suggestions.
Eric

 

[clinto]

When I got mine, the pedal was kind of lower than I would have preferred. I went around and adjusted all 6 and it made a big difference. Make sure to pay attention to the TM in this arena; it claims the "major" adjustment (bottom pins) are only done with new shoes and that the "minor" adjustment (upper pins) are for periodic maintenance (i.e. adjusting for lining wear)

 

[OPCOM]

sponginess on mine was a severely empty master cylinder.. it took 4 years and 20K miles to slowly 'use' the fluid. shoes are still excellent!

 

[acetomatoco]

Yup... there are 25 adjustments to make... and the MC and the airpak cannot compensate for them when they all add uop... do your PM....only takes a coupla hours...