Sticky Calipers

[Stevepipeman]

I just finished a complete rebuild of rear drum brakes on 71 FJ40. New wheel cylinders, shoes, drums, rear brake lines and replaced leaky OEM master cylinder with 80 series non-ABS type. I Converted to front discs and time of initial resto 3 years ago. Like many, I had a bitch of a time bleeding the system but finally got it. After test driving, noticed much resistance and no rolling back on the sloping driveway. Turns out both front calipers are not releasing and binding on rotors. I have to believe this a master cylinder issue, but what do you guys thinks? I did carefully bench bleed the master before installing.

 

[Skreddy]

Did you check/adjust the booster to master cylinder pushrod length? Brake lines going to correct ports? (Not sure if that master has residual valves). Do you have residual valves or stock proportioning valve still, if it came with one?

 

[JackA]

Sounds like the push rod needs adjusting. Had the same issue.

 

[Stevepipeman]

Did you check/adjust the booster to master cylinder pushrod length? Brake lines going to correct ports? (Not sure if that master has residual valves). Do you have residual valves or stock proportioning valve still, if it came with one?

Thanks, that's the general consensus.