Rebulding Cman impact

[bilko1]

I have a 300 ft lb, Cman 1/2 in impact gun that just stoped working.
This stay's in the home garage and is mostly used for changing tires and non automotive repairs around the home. Lonmower blades, small trailer for the tractor and such.
I kind of like this thing, it no longer has any markings and I would like to try and get a repair kit for it. Dos anyone know where to get repair parts,
YA I KNOW, sears parts, but I dont have the part # of the gun anymore.

 

[vssjim]

You will have to post a picture so we can see which impact it is as they have had many suppliers for these tools over the years.