Hi everyone, excessive housing heat paired with uneven gear face wear usually points to mounting flex or severe shaft misalignment caused by repeated high-impact shock loads.
Running timber chippers with shaft play forces gear teeth to mesh off-center, which rapidly generates friction heat and destroys the hardened surface profiles.
Check the housing casting for hairline stress cracks and inspect the main shaft bearings for inner ring movement before attempting any field adjustment.
Getting specialized mechanics to recalibrate your Cotta gearbox will realign the internal shafts, balance tooth mesh tolerances, and prevent catastrophic casing splits.