I am putting my thinking cap on here but I believe the two spools in the brake valve are slightly different and can be mixed up,in wrong hole. Other thing is that the screw holding pistons on inside valve have to be bottomed out or they will contact valve cover and hold valve applied. I would just run a bleeder hose off bleeder back into tractor dip stick and see if brake is free then and if so you are darn sure problem is brake valve not self adjusters etc. I have had to do some compensating over the years on those self adjusters and the portion of housing they contact to make up for worn or resurfaced parts to overcome brake dragging. You need to have like .020 clearance on disc when brake is released, engine running.
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Today's Featured Article - Horsepower Defined - by Staff. Indicated Horsepower This represents the power developed in the enine cylinder as obtained from the pressure in the cylinders. This is pressure obtained from an indicator which shows cylinder pressures. Indicated horsepower does not represent the actual useful power delivered by the engine. Brake Horsepower This is the actual horse power delivered by the engine to the shaft. It is equal to the "indicated horsepower" less the friction of the engine. It is useful hor
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