Allowable play on backhoe/fel mounts

[kjbpe]

I thought the kubota l48 I bought was routinely greased. Every joint had no play in them. But...when I greased all the joints (four needed the pins removed and the grease channels cleaned out) I noticed some play in the backhoe and fel pivot joints. My question is: how much, if any play is acceptable? It appears to be about a 3/16" movement across the end caps. Is this normal for a machine with 600 hours and will it get much worse?