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CAT 307ssr Excavator Experiencing Play in Gear Mesh When Swinging Cab Back and Forth

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I've encountered a similar issue with a different model. It turned out to be wear in the swing bearing. Check the tolerances.

Sounds like you might need to inspect the swing gear and pinion for wear. It’s a common issue with older machines.

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I had a similar problem and it ended up being a loose swing motor mount. Tightening it up resolved the issue.

Check the lubrication of the swing drive. If it’s low on grease, it can cause excessive play and noise.

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