540/1000 rpm pto difference between 10 & 20 series was mentioned in that on the earlier series pto stub shaft bolted on while 20 series was held in with a snap. Although that is true the tiny speed shift pin that was eliminated on the 20 series is more important in my opinion than how the stub shafts were attached to tractor. Once the tiny pin(parts key 32) was bent/broken 10 series required a tractor split to repair pto. 540 stub shaft pushes on rod(parts key #59) that pushes on tiny pin(parts key 32) to change speed of pto.20 series pto speed changed when correct stub shaft(540 or 1000) was inserted it went in the correct speed drive gear. Photo is of 10 series pto not 20 series.
This post was edited by Tx Jim at 03:31:53 07/06/12.
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Today's Featured Article - Fasteners: The Nuts and Bolts of Nuts and Bolts - by Curtis Von Fange. The nuts and bolts of nuts and bolts is an interesting and essential piece of knowledge that applies to our older tractors. An improperly torqued capscrew on an engine head or a shear bolt that is too hard on the driving shaft of a bushog can create havoc and make an expensive and uncalled for repair. Let�s examine the purpose and design of these fasteners in order to ensure their proper use. Fasteners are probably one of the aspects of mechanics that is given the least amount of thought.
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