Testing either the mechanical (small frame tractors like a 450) or the Hydraulic Big frame tractors like a 806 is the same. The best test is pulling a tillage implement. with the tractor pulling hard in direct drive (lever forward) crisply pull the lever back (or switch). it should down shift int the reduction like a n automatic does going up a hill. Clean change in ratios. Then crisply pushing the lever forward it should up shift with very small transitional slippage. The engine should come down to loaded in tenths of a second. The other way is to test it on a county road by starting out in road gear with the lever back. give it near wide open throttle and (when safe) let the clutch out like you are avoiding an accident. It should pull from a stop cleanly and when shifted to direct, act as above with little slippage. If the master clutch is worn, slippage will occur in all tests. If the tractor does not move, the sprag clutch is out. If it will not go into direct, (no shift) the TA front clutch is out. Jim
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Today's Featured Article - Massey Ferguson 35 (and up) Tractor Assembly Notes - by Jack Wetmore. These assembly notes are for Massey Ferguson tractors with a two stage clutch and 6 speed, 8 speed and mutli-power transmissions. I see a lot of discussion forum messages regarding damaged clutches from improper assembly. The objective is to have the engine and transmission slide together safely and easily until the gap between the two halves is less than 1/4", BEFORE tightening any of the bolts holding the two together. Using bolts to draw the two halves together will damage the PTO
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