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Cattle Boards
Trucks, Tractors & Machinery
PTO shaft frustration
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<blockquote data-quote="dun" data-source="post: 231336" data-attributes="member: 34"><p>This problem only happens with the brushhog shaft. The pin that slides into the groove on the tractor pto shaft climbs out of the groove and burrs up the tractor shaft and and wedges in place.</p><p>Is it possible that the mower shaft is too long and doesn;t collapse enough when on rough ground? Weak spring in the coupler, replaced the locking mechanism twice on the coupler? The splines are a nice tight sliding fit and there is no play when the coupler is connected to the tractor.</p><p>I've been considering drilling out the coupler and just using a hardened bolt with a castled nut in place of the spring loaded catch. What size bolt would be the correct size. I've measured pins from a couple of different shafts and they're all different diameters.</p><p>Help</p><p></p><p>Thanks</p><p></p><p>dun</p></blockquote><p></p>
[QUOTE="dun, post: 231336, member: 34"] This problem only happens with the brushhog shaft. The pin that slides into the groove on the tractor pto shaft climbs out of the groove and burrs up the tractor shaft and and wedges in place. Is it possible that the mower shaft is too long and doesn;t collapse enough when on rough ground? Weak spring in the coupler, replaced the locking mechanism twice on the coupler? The splines are a nice tight sliding fit and there is no play when the coupler is connected to the tractor. I've been considering drilling out the coupler and just using a hardened bolt with a castled nut in place of the spring loaded catch. What size bolt would be the correct size. I've measured pins from a couple of different shafts and they're all different diameters. Help Thanks dun [/QUOTE]
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