Left rear brake drum gets hot

cudamark said

Agreed, it's not that the left side is working too much, it's that the right side isn't working much if at all. Make sure you didn't run the U-bolt on that side over the brake line. I've seen that happen with the same result. Anything plugging the line can do it too.

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You know what I found once? It was on a Volkswagen Beetle. This was probably about 1981 and in the high school auto shop. The other two shop classes had all taken a swing at it and struck out. So, Mr. Lovett came to me and asked if I would look at it. He knew I was sharp on brakes, as even though I was a kid, I had been in the work force since I was nine. I started a simple trace of fluid pressure. Why the other classes hadn't done that I have no clue. Within 20 minutes I had it isolated to the very left rear wheel cylinder where the brake line screwed in. There was a small ROCK blocking the fluid passage in the wheel cylinder. So unbelievable, but that's what it was. Just crazy.