I installed the ARB compressor and mount under the hood in September. It hasn't seen much use overall, but now the compressor is loose. I checked the two 13mm bolts for the mount (tight), the four 10mm bolts holding the compressor to the mount (tight), and three of the four allen head bolts, which were all tight, but there I can still wiggle the compressor about 1/8inch, and it appears the allen head bolts are not tight enough, but I don't want to over tighten them.

Anyone else have this issue, or any ideas?

I thought I would check before I took the compressor off the mount.

Thanks

 

Maybe stick a washer or two under them.

 

A little red loctite will keep them from loosening once you get them snugged up again.