Alright I'm going to list everything I have done and do my best to explain. AC HD6G Track Loader. 24 volt system, two brand new batteries hooked up in series 1000 CCA(each batt.) at 32 degrees. Ground strap #1 attached to the frame below the gas tank I pulled the starter sent it to TX Alternator and Starter in Austin TX, manual solenoid rebuilt, replaced brushes, New gear. Hooked everything back up the way it was and hit the peg(kick a peg to start it) and nothing. No click or spinning, absolutely nothing. Took the starter back off and took it back up and it tested fine. The guy at TX Alt said that the bolt sticking off the end of the starter was for ground. I thought it may have been grounded through the case because I had heard of that and there was nothing hooked up to that post before, although the bolt was resting up against the oil filter housing base so it might have been grounded there(or not, I don't know.) So he made me a ground strap and I grounded it to the frame. It turned over one turn of the engine and thats it. It would barely turn the motor. Each battery terminal and the starter terminals get pretty warm to the touch. I cleaned all the terminals and connections. Where I have the new ground strap #2 hooked to has been scraped good with a wire brush. Right now I hit the peg and it just makes a clank noise. Any ideas or suggestions are appreciated. I was told the set-up is pretty straight forward with it being such an old machine. If you need pics let me know and I can post some tomorrow. Hopefully we can figure this out. Thanks again.