Was sent to check a YT with some unusual vibration and noise. Met with a sub who ran a vibration test on the machine and I pulled the coupling and checked the shaft alignment. Before reassembling I checked the compressor shaft for side to side travel and with light (hand only) pressure I found the shaft would travel side to side 0.015 each way .030 total and with light pull up (again by hand only) would lift 0.020.
Seems excessive to me for bearings to allow that much travel and the seal was beginning to seap a little more before the checks but I would like your thoughts and opinions. I of course have run into a wall trying to locate manufacturer tolerances but I have tried before asking here.