Posted by Janicholson on December 20, 2008 at 11:55:01 from (64.83.205.193):
In Reply to: farmall H '47 belts posted by Doug M on December 20, 2008 at 11:21:38:
You are in for a interesting time. The first item is to remove a square headed set screw on the front half of the Water Pump pulley. This set screw (and rust) prevent the unscrewing of the front half of the pulley. Use PB Blaster, liquid Wrench, or other penetrating oil (Auto trans fluid will do) and liberally spray and apply it to the pulley adjustment mechanism. Heat the front pulley with a Propane torch until it is a bit too hot to touch (not more) then using a brass drift and a hammer, tap in both tightening (CW from the front of tractor) and CCW, on the metal bars that the setscrew came out of, and the one on the opposite side. This continuous tapping and more heat, and tapping, will eventually get it moving so that the two halves of the pump pulley can be rotated apart substantially. Put a new generator (or alternator) drive belt on it now! with a warm belt (if possible!!) loop the belt over the tips of the fan blades, (one at a time) placing it on the pulley side of the fan. Put it on the Gen/alt. Do the same with the fat belt. (it is possible!! Pull the big Belt downward to be snaked into the space between the crank snout, and the hand crank drive (bottom pulley. Now place the belt into the groove of the pump pulley (wide open now) and then run it onto the crank pulley. Tighten the pulley back together until the belt tension is about an inch and a quarter total play pushing and pulling on it with your hand in the middle of one side. This seems loose, but they are run with this tension. Put in the setscrew with anti Sieze on it (and the big threads of the pulley) in place, and run the tractor for an hour or so. then check the tension and adjust to the 1.125 range push pull, to make it perfect. Do not over tighten the big bely, it will destroy the Water pump. JimN
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