Posted by Troy Schubert on January 12, 2011 at 17:01:11 from (76.127.220.198):
I have the hydraulic lift apart on my IH 434 and found that the safety chain P/N 3070768R91 (item 13 in attached image) is in pieces. messicks.com has it for $108. Yuck.
My understanding of the function of this chain is when using draft control, if the lift comes all the way to the top, the chain tightens and shuts down the hyd pressure. I think the chain is intended to "break" as the links are just aluminum... furthermore, the end link is not even closed (as designed).
On my tractor, there is no safety chain hose (short or long) in the hydraulic reservoir so I think these components were never installed.
My questions are: 1/ can I cobble something together provided it"s the same length and includes a similar "break away" feature? Part of the original alum chain is still intact, so I could use that. 2/ what function do the long and short hoses have? Do the hoses just constrain the chain and keep the links from catching on anything inside the reservoir?
I"m thinking I could use a cable to make up the length where the links are damaged. or maybe just replace with steel links... as they say, the chain is only as strong as the weakest link.
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