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Case Tractors Discussion Board

70series PTOs not stoping.----- Warning!!!

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Posted by Adirondack case guy on October 05, 2012 at 15:57:18 from (

Been watching Kow Farmers thread. The cable linkage is critical to proper performance of the PTO. As stated the first place to look! --If all is good in this area and a preasure check shows no pressure to the PTO clutch pack when lever is in OFF position and PTO is still turning, BEWARE.
If you can (carefully grab the shaft) with your hand, and stop it, your clutch plates are OK,but the brake could be worn out or broken off the brake acuation shaft, only 5/16" diamiter. In 970s and 1070s this could result in" blowing out" the bottom of the Tranny housing. 7,8 and 1170/5s have smaller bull gears, Not so much of an issue, BUT as I said 9s&10s have big bullgears that just clear the bottom of the tranny case and when the pto brake pad casting peice falls from the back of the PTO assy, it falls into the tranny housing, and Murphy will eventually push it between 0ne of the bullgears and the housing. Like stated on an earlier post about LA tranny, (broken, due to broken drive chain ) I have had to weld back the peices in far too many 9s&10s Trannys. My recomendation, if it doesn't stop "pull the rear housing and inspect the PTO assy and brake to be on the safe side"



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