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Hello all - My name is Paul and I am AC-holic. I have just purchased my first AC, an HD 5, for work around the property. Right now we are using it to move pitrun gravel into the bays of our newly built RV storage facility. I wish I could give you more info on the tractor, but I have to remove the winch to gain access to the S/N. The photos below are the pics the previous owner posted on Kijiji. We have since removed the "cab", as it was way too low for me to get in and out without doing the human pretzel imitation. It seems to run well, supposed to have a "new" rebuild 2-71, starts easy, doesn't smoke too badly.  Not sure if it's as powerful as it's supposed to be, I have not had anything to compare it to. It drips (used to) oil. Actually, it flows out. Got underneath and had a look and the whole of the undercarriage, from the clutch back, was covered with nice, clean, clear oil. My first thought was that I had been had, but it turns out it wasn't so bad. Seems whoever was working on it in the past, neglected to re-install the shift lever guide, and the tranny oil was flowing out of the bolt holes almost as fast as I was pouring it in, not to mention that when it came out the breather, it dripped onto the yoke of the driveshaft, and was flung everywhere. Thanks, meathead. It must have been that way for quite a while, as like I said the whole underside was wet to the point where the dirt was washed off. Anyway, that was yesterday, today we are going to try to get the winch off. The cable is so badly wrapped around the drum it's useless (for now). From there, it's onto the final drives to check them out. But so far, I absolutely love this machine. So  simple to work on.  So, that's it for now.  I'll be back.

The transmission use 5gallons oil 80/90 and if you do't have dip stick on the level

on the side of the transmission is a small plug - that is the fill level .

Thanks, guys. Got the transmission straightened out, oil is good now. We decided not to remove the winch yet. We don't have any way of protecting the output shaft, so until I fab one up, we will leave the winch on. Bad news time: checked the final drive oil levels, rhs was fine, lhs not showing, pulled the drain plug on the lhs final drive. Lots of metal had settled in the bottom of the housing. There didn't seem to be a lot in the oil itself, so here's hoping that not too much damage for too long of a time occurred.  Flushed it out with a couple of refills. On the first refill more metal came out, but I think it was just the stuff near the hole, but some fair sized flakes. There isn't a lot of sparkle to the oil, so I don't think it is bearing material, more likely a gear/shaft problem. I'm not sure why the oil level would have been so low, as there are no apparent leaks in the drive seals (so far). Unfortunately, we need this machine to work. So we decided to use it and keep an eye on the oil, maybe even flush it daily if need be. We aren't working it hard, maybe an hour/hour and a half a day, for fifteen minutes at a time. If it lasts for six more days, we will be done, if not, oh well, it was broke before.

The lower bearings per say are the ones which get oil from gears - the one that needs oil worst as when it goes bad is the top one for the first reduction - the one at top outside of rear housing - for if that bear fails it is known to break the case (housing) 

Thanks, guys. This is invaluable info. I have the operator's manual, and the parts manual,  but not the service manual (yet). It's ordered and supposed to be on it's way, but who knows how long? Just looking at the arrangement of the bearings, I wondered how the top shaft was lubricated. It seemed to be too high for a "splash" system, and how much splash would these drives create? It's not like they're doing 30mph. Needless to say, both these covers are coming off as soon as it gets light. I'm almost afraid to look, what with the flakes that were in the bottom. As an aside, I left the plugs in the drain holes yesterday, just to get an idea of how much oil I was losing. Of course, the rhs was fine, and there was less than a half of an ounce on the lhs. But, we only worked the machine for maybe two hours. My first thought was how long did this guy run this without checking his levels? Thanks again, fellas, most helpful.

The HD6 final drive should have 3 gals.oil each