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Faunsdale, AL | Much of what everybody is telling you is about sheave timing not alignment. In other words as you open or close the hydraulic adjustable sheave, the other spring loaded one must close or open to keep the belt tight.
If everything is working properly and a new, full width belt, you should get full range of rpm out of the drive. If belt is worn down you will not get the highest or lowest speed out of it and it may get slack at either extreme.
Once an edge is worn off the belt, it is going to tend to roll over in the sheaves, so just go ahead and get a new one if yours ever gets like that.
For alignment, a yard stick or other straight edge, or even a piece of string stretched across the two sheaves flat sides should get you close enough for good service.
Watched a neighbor fight a sticky variable speed sheave one year. He was cutting wheat for us. If they weren't unplugging the cylinder, they were replacing the big belt. I got the tech manual out and we went through the proper greasing procedure, but it didn't help much. He finally just got a reman and put it on there, but that was after they had left our place. | |
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JD 6620 Cylinder Drives Alignment
