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Farm Machinery
Classic Machinery
Massey Ferguson pressure control coupler
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<blockquote data-quote="Cowabunga" data-source="post: 4746012" data-attributes="member: 718"><p>Marvellous thing when used appropriately. There is no need for that little check chain shown in the picture, which stops the links dropping. Just use the minimum pressure needed to hold the links up and increase the pressure to transfer weight when wheelslip becomes excessive. Don't use too much pressure or steering ability may be impaired.</p><p> </p><p>Its important to initially adjust the plates to clamp the lower links properly for the different sizes of lower links found on MF tractors. Also to tighten the sideways external stabiliser chains or fit bars to centralise the links securely.</p><p></p><p>The chain should ideally not hang vertically down when wrapped around the implement drawbar, but it should slope a bit backwards so that it wraps about a foot or two behind the hook on the coupler. To accomplish this there should be a strong loop welded beneath the implement drawbar to keep the chain in place and the Implement drawbar itself should be strong enough to take the load vertically trying to lift the implement at its mid point. It will not have been designed for this, although it may be strong enough. Or not.</p><p></p><p>Its an ideal tool to use on a land roller or trailed disc. The second picture probably shows it on a Watson roller but it does hang vertically. Better than nothing but not as effective as it could be. </p><p></p><p>The ball can jump out of its socket should the implement ever accidentally detach during work. This is to stop the tractor being pulled over backwards and squishing the driver.</p></blockquote><p></p>
[QUOTE="Cowabunga, post: 4746012, member: 718"] Marvellous thing when used appropriately. There is no need for that little check chain shown in the picture, which stops the links dropping. Just use the minimum pressure needed to hold the links up and increase the pressure to transfer weight when wheelslip becomes excessive. Don't use too much pressure or steering ability may be impaired. Its important to initially adjust the plates to clamp the lower links properly for the different sizes of lower links found on MF tractors. Also to tighten the sideways external stabiliser chains or fit bars to centralise the links securely. The chain should ideally not hang vertically down when wrapped around the implement drawbar, but it should slope a bit backwards so that it wraps about a foot or two behind the hook on the coupler. To accomplish this there should be a strong loop welded beneath the implement drawbar to keep the chain in place and the Implement drawbar itself should be strong enough to take the load vertically trying to lift the implement at its mid point. It will not have been designed for this, although it may be strong enough. Or not. Its an ideal tool to use on a land roller or trailed disc. The second picture probably shows it on a Watson roller but it does hang vertically. Better than nothing but not as effective as it could be. The ball can jump out of its socket should the implement ever accidentally detach during work. This is to stop the tractor being pulled over backwards and squishing the driver. [/QUOTE]
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Massey Ferguson pressure control coupler
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