Since repacking the tilt cylinders on the CAT 941B the machine has been sitting a while (several weeks) and when I moved it to test out the repacked cylinders I noticed a loud squeal coming from the left track. Appeared the upper idler wasn't moving so I marked it and moved the machine a few feet and the idler didn't move. Loosened the center nut and noticed there was no oil. I'm thinking the lack of oil and sitting for some time things might have gotten a bit rusty. So, I have two questions I'm hoping someone can answer. 1) How do I get the idler rolling again and 2) what type of oil goes in there.
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