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Burt: I have had this problem on some of my Ford tractors with drum brakes. As Chuck said, sometimes this can be solved by "breaking the glaze" on the shoes and/or drums with very course sandpaper. If this doesn't do it, try turning the drums. While they are off, check the fit between the shoes and drums. You will need to remove the shoes and put them inside of the drums to do this. When drums are turned the ID of the drum is increased slightly. If the drums are turned several times the shoes will contact the drums only in the middle of the arc and braking effort will be significantly reduced. In years past, is was common practice to cam gring new shoes to fit the ID of the drums after turning automotive drums. Currently, I have a Ford with this very condition on the left side and the brake has little effect even though the lining is new and not glazed and the drum has been turned. When asking at various auto parts stores if they can cam grind brake shoes for me or even still have the machine to do so, I get only blank stares. Only one guy who has been in the business for about 25 years knew what I was talking about and he told me that it was now "illegal" to cam grind shoes so he gave his machine away. By the way, if this is your problem, the shoes will eventually wear to fit the ID of the drums. On a car this can take several thousand miles of normal driving. On a farm tractor it will take years. You can, of course, buy new drums. Dean
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