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Farm Machinery
Classic Machinery
MF506 Ground Speed Variator problem
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<blockquote data-quote="GmB" data-source="post: 7683619" data-attributes="member: 88304"><p>As usual, last minute rush to service the old combine ready for a smooth harvest, only to have an issue with the ground speed variator.</p><p>This will be my 3rd season with it and have suffered with belt slip for the last 2 harvests when trying to speed up, thought I had better sort it out.</p><p>Both belts are the correct ones and in good condition, but I can’t get the belt from the variator to the gearbox to stay tight when I push the lever forward to increase ground speed.</p><p>It becomes so slack that it looks like it might jump out of the variator pulley. Try to tension it up and it makes a nasty noise, but still goes slack when trying to increase speed. The belt from the engine to the variator seems to stay the same tension at all times.</p><p>Have tried adjusting using the thread on the bottom of the ram, no better.</p><p>Could it be a problem with the variator itself? Have no idea what is inside it, is it something that can be easily stripped?</p><p>Would like it sorted, not an issue in the field, but driving the 3 miles from home to the fields is a SLOW job.[ATTACH=full]977297[/ATTACH][ATTACH=full]977298[/ATTACH]</p></blockquote><p></p>
[QUOTE="GmB, post: 7683619, member: 88304"] As usual, last minute rush to service the old combine ready for a smooth harvest, only to have an issue with the ground speed variator. This will be my 3rd season with it and have suffered with belt slip for the last 2 harvests when trying to speed up, thought I had better sort it out. Both belts are the correct ones and in good condition, but I can’t get the belt from the variator to the gearbox to stay tight when I push the lever forward to increase ground speed. It becomes so slack that it looks like it might jump out of the variator pulley. Try to tension it up and it makes a nasty noise, but still goes slack when trying to increase speed. The belt from the engine to the variator seems to stay the same tension at all times. Have tried adjusting using the thread on the bottom of the ram, no better. Could it be a problem with the variator itself? Have no idea what is inside it, is it something that can be easily stripped? Would like it sorted, not an issue in the field, but driving the 3 miles from home to the fields is a SLOW job.[ATTACH type="full"]977297[/ATTACH][ATTACH type="full"]977298[/ATTACH] [/QUOTE]
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Farm Machinery
Classic Machinery
MF506 Ground Speed Variator problem
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