Diamond Drive Question

[barleyfarmer]

Is there supposed to be any free play(front to back) in these?I have a 09 m6 and m1000 that I'm changing fluid in and wondering do I have to do any adjustments?Both are at about 1800 miles.

 

[Stg2Suby]

The play is probably normal and due to the clearances in the planetary carriers, but you should be concerned with the condition of the bearing center bearing on the lower shaft assembly. Here's a link to a thread I started awhile back https://www.snowandmud.com/forum/f456/diamond-drive-bearing-upgrade-thread-lots-47974.html