Quote:
Originally Posted by James McClure
Mine has the same lock-up issue. Brakes are in good shape with no fluid leaks & adjusted properly. Height sensing valve is new and in correct position, BUT, it only happens once or twice when I first start out. The rest of the day it's fine. The drums will get a light rust coating when it's damp out and the truck sits for a few days. The first few stops cleans the rust off and the issue goes away. If you have a fluid leak and don't know if it's brake fluid or rear end grease, here's a trick. DOT3 brake fluid is water soluable and rear end grease isn't. Get some of the wet stuff on a finger and wet it. If it rinces off easily it's brake fluid, if not, rear end grease. This won't work with DOT5 though, as silicone brake fluid isn't water soluable. jim
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I know you guys will all have your own fix for this problem , but here is what fixed my truck. Yes it was something you would never suspect causing the problem. What fixed it was just having the rear drums resurfaced , Yes take them off have your local machine shop or anyone that has a brake lathe with the proper adapters cut them.
The only thing that I could figure is that shiney mirror like glaze the get over the years causes the first few stops to grab and in my case lock up, it would skid the rear tires. My truck would almost throw you through the windshield until they got a little heat in them. Trust me this is your problem if there are no fluid leaks on the shoe surface this will cure it!
Desert
PS: My 83 has the 8600 GVW pakage with the same floating rear you have