Carnut
Member
Need your expert help. I am having trouble adjusting my power drum brakes on my 66 Belvedere. I can see the front shoes moving roughly a 1/4 inch inside the drums when I have someone apply the brakes and someone rotate the tire. You can hear them clank around a little sometimes. I do have new shoes and wheel cylinders, re-used the hardware. If I adjust them up higher and take it for a drive, they are way too tight and hot as hell. In the records that came with the car someone wrote on a work order back in 2005:
Checked and found valve stuck inside booster. Could not get new one. Removed and made rod for master cylinder . Bled system mounted master cylinder.
I thought maybe the rod was a little long going into the master, holding the wheel cylinders out and not letting me adjust them properly. What I measured was the hole in the master is roughly .915 deep. I took an aluminum block I had lying around that was 1.005 thick and dropped a hole in it so I could put it over the rod and measure the distance down to subtract the two numbers and find out how far out it protrudes, which is roughly .885. I say roughly because it is a rounded end and I did my best to be accurate. That leaves .030 clearance which I am assuming is ok? It has been a while since I have adjusted front drums and never on a mopar, but the slop just doesn't seem right. Stops great though. Any guidance would be greatly appreciated.
Thanks,
Tim
Checked and found valve stuck inside booster. Could not get new one. Removed and made rod for master cylinder . Bled system mounted master cylinder.
I thought maybe the rod was a little long going into the master, holding the wheel cylinders out and not letting me adjust them properly. What I measured was the hole in the master is roughly .915 deep. I took an aluminum block I had lying around that was 1.005 thick and dropped a hole in it so I could put it over the rod and measure the distance down to subtract the two numbers and find out how far out it protrudes, which is roughly .885. I say roughly because it is a rounded end and I did my best to be accurate. That leaves .030 clearance which I am assuming is ok? It has been a while since I have adjusted front drums and never on a mopar, but the slop just doesn't seem right. Stops great though. Any guidance would be greatly appreciated.
Thanks,
Tim