Cat 315C L turntable play

Hi,



I've got about 100 hrs on a 315 I bought mainly doing landscaping and clearing. I am having some play on the turntable with some rocking that is worrying me. Don't want to have to replace the slew bearing after just 100 hrs. The machine has 8900 hrs on it.



My question is how do I check the bearing and how much play should be there?



Thanks