I recently bought a high hour mid '80's vintage 843. Overall condition is very good, has plenty of power but has started to cost me some bucks as expected. I've blown a few hyd lines, had to replace the screen filter in the block under the seat etc. From the get go, I've had a light hammering noise coming from the lower left side of the rig. No noise when traveling straight but a "jack hammering" type noise when turning. I really didn't have the time to address it but I believe its now a bigger issue! My neighbor borrowed it to work on his go cart track. All was well until he was parking it up near his house and a hose blew on the bucket. He parked it, pulled the hose and had a new one made. By the next weekend when he got back to working on it, he found the rig sunk up to the TOP of the tires in the mud. Turns out he had an unknown leak in PVC pipe underground and happened to park directly over the break. The rig was listing over about 15 degrees. He dug and jacked, got blocks under it and then found the rig wouldn't move. Turns out he had the right stick in the accessory "detent" position. I had him move the stick back towards center and the rig drove out of the mud a few feet where he parked it. I went to get it but the left side won't power up. Right side works fine but the left stick does nothing. Any ideas? Could fact that some fluid was lost with the hose break (and then replaced) or that the rig rested a few days at an angle could cause the left side not to work? Or is it something more serious? I've never owned/operated a skid steer before so am at a loss with what to do next. Any help is appreciated! Thanks Lance