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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum

White 2-70 Coupler Chain

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Anthony

05-05-2005 17:23:22

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I was using my White 2-70 on a subsoiler and as I started to slow down at the end of the field I heard a loud ticking or rat-tat-tat noise and shut off the engine; the tractor was still moving under power.

I crawled underneath and looked at the chain. It was still in place but the single long cotterpin was laying on the ground along with the little plate that goes over the 2 link pins. The ends of the cotter pin that you bend over were sheared/broken off. The master link had been installed with the single long cotter pin on the transmission side and the 2 short little cotters on the over/under side (facing front of tractor).
The heads on the two little cotterpins are pointing in the direction of rotation.
Is this the right way to install? Does it matter what side of the sprockets the long pin goes on? It looks like it would be easier to install with the small pins on the side facing the over/under. Does it matter which way the head of the pin faces relative to engine rotation?

What makes these cotter pins break? Can I just go and get another AGCO master link and put it back together, the chain looks in good shape?? I guess I was lucky to stop when I did as the chain didn't even fly off. Do they usually let loose when you slow down or push the clutch in because then the tension is off of the chain??

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CEB

05-09-2005 08:12:34

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Re: White 2-70 Coupler Chain in reply to Anthony, 05-05-2005 17:23:22

My 1655 has the long cotter pin on the tranny side and the two short ones on the engine side and it has over 6000 hours on it and I have never had any trouble like that. First of all-what do the sprockets look like? If they are worn down too much this could be the cause of the problem. Second, I would check the alignment of the two sprockets. The engine side sprocket should be just a little bit higher than the one on the tranny side (about 1/16 of an inch or so). My 1655 has a bolt on the bottom of the frame that can be turned in or out to adjust the height of the engine side sprocket (of course you'll need to loosen the engine mounting bolts first). If your tractor doesn't have that adjustment bolt, then you'll have to attach a hoist to the engine (after loosening the engine mounting bolts) and lift the engine slightly. Before lifting the engine check all lines/linkages to make sure you don't bend anything-some may need to be removed. Then you'll either need to remove shims or add more depending on whether you need to raise or lower the engine side sprocket.

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