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Nick_R_23 · 10-31-2023, 08:18 PM

I can’t ever recall having a set of drums that didn’t feel like they worked well. The proportioning valve should also balance the brakes between front and rear.

The backing plates are in good condition and didn’t have any wear or grooves that I saw, but I will double check to verify.

Here’s an interesting bit of info I found out: On the 1 ton trucks, they use a 1-5/16” master cylinder with 13” brakes (difference being 3.5” wide shoes vs 2.5” wide on 3/4 ton) BUT the wheel cylinder used is the same. Honestly, I think I will try a 1-5/16” master cylinder, which should give me a higher pedal and move a higher volume of fluid through the system, which I’m thinking this truck needs. If I can get shoes to feel like they properly actuate against the drums, then I may still just have to let the shoes wear to the drum and adjust again after a few miles of use.

10-31-2023, 08:18 PM	#26
Nick_R_23 Registered User Join Date: May 2016 Location: Willow, Alaska Posts: 847	Re: Why the won’t my rear brakes work?? I can’t ever recall having a set of drums that didn’t feel like they worked well. The proportioning valve should also balance the brakes between front and rear. The backing plates are in good condition and didn’t have any wear or grooves that I saw, but I will double check to verify. Here’s an interesting bit of info I found out: On the 1 ton trucks, they use a 1-5/16” master cylinder with 13” brakes (difference being 3.5” wide shoes vs 2.5” wide on 3/4 ton) BUT the wheel cylinder used is the same. Honestly, I think I will try a 1-5/16” master cylinder, which should give me a higher pedal and move a higher volume of fluid through the system, which I’m thinking this truck needs. If I can get shoes to feel like they properly actuate against the drums, then I may still just have to let the shoes wear to the drum and adjust again after a few miles of use.