Join Date: Oct 2010
Location: SW Saskatchewan
Mentioned: 0 Post(s)
Quoted: 292 Post(s)
Change the shaft and the bearings. I have had this situation and there was a "tick" coming from the bearings and shaft. I ignored it as bearings appeared to be okay on the eccentrics. Having a hex shaft and looseness slams the sieve system hard. My first experience with this was. a broken bolt and later broken sieve rail due to stress likely caused by broken bolt. It also pays to make sure any shaker bushings that are damaged to be changed out ASAP, don't leave until the end of season. Sieves themselves will also breakup. Microscopic wear on that hex shaft is very detrimental. You want to save a lot of money in the long - change that hex shaft!
This is more applicable to the long sieve system. Increasing the length of sieve system puts more stress on the old system than it was originally designed for. The additional wall support for the needle bearings were again a byproduct of additional sieve length.
When you change everything out, make sure that the bearings are mounted square to each other in the system. There was a jig to make sure you get proper placement of those bearings in the "cheeks" of the combine. Having the system stroking at a bias to each other leads to quick failure of sieve hangers, bolts and bushings. I made my own jig which I borrowed from my local CaseIH dealer to get it right.
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Last edited by RunninREDharD; Today at 12:32 PM.