Thanks for the post!

If you can reply with the model# of the compressor I'm sure I can locate it for you. It sounds like you need the Piston/Connecting Rod itself, which the Piston Ring installs on.

Thanks!
- MTR

I think your model is actually "WL611002AJ", after doing some research. Typically you'll have six digits then an "AJ" as a suffix.
If this is your model you can view this on our site at the below link:

www.mastertoolrepair.com/campbell-hausfe...l611002-p-26822.html

If you need the Eccentric Weight/Bearing, this is unfortunately not available separately from the manufacturer (Campbell Hausfeld); it's only available as an entire Motor/Pump Assembly.

You're probably right, however, as the Piston bolts down onto the Eccentric and if it's worn or wobbles on the shaft, the Piston won't last very long.

You may want to give a tech at Campbell a call directly at 800-543-6400 to confirm this with them, they'll probably say the same. If they can't offer the Eccentric Assy to you then the compressor may be a boat anchor :-/

I hope this helps, thanks again for the post!
- MTR