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I checked the front axle brake shoes and they are worn down more than the rear axle brake shoes. I would say there is only about .010 inch left before it hits rivets. When I checked the brake shoes on the rear axle they still look great. Its hard for me to estimate how many miles are on the brake shoes, but I put 25,000 miles on it since I got it and the truck was in great shape. You wheel cylinders looked to be replaced before I got the truck (uncle sam changed them last). The truck now has about 50,000 miles on it. I just wanted to give some of those specs so you know what situation I am in. So who knows exactly how many miles are on the shoes.
Now, I am fairly sure the truck has the same wheel cylinders all the way around. If all the wheels turn the exact same speed and all the brake pressure is the exact same all the way around, why would the front shoes wear out faster than the rears? I really do not think I have any stuck wheel cylinders because they looked to be new when I got the truck and it has good brakes for a deuce. I also had similar brake drum temps when I checked them with an IR heat gun. I heard the M35A3 has bigger diameter wheel cylinders, is this true? I did a search and did not find an answer.
Long story short, I am going to replace the front shoes. I just want to understand why the fronts would wear out faster… ASSUMING Uncle Sam put all new brake shoes on the truck when they did the wheel cylinders.
Now, I am fairly sure the truck has the same wheel cylinders all the way around. If all the wheels turn the exact same speed and all the brake pressure is the exact same all the way around, why would the front shoes wear out faster than the rears? I really do not think I have any stuck wheel cylinders because they looked to be new when I got the truck and it has good brakes for a deuce. I also had similar brake drum temps when I checked them with an IR heat gun. I heard the M35A3 has bigger diameter wheel cylinders, is this true? I did a search and did not find an answer.
Long story short, I am going to replace the front shoes. I just want to understand why the fronts would wear out faster… ASSUMING Uncle Sam put all new brake shoes on the truck when they did the wheel cylinders.
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