Tractor project done.

[jon f mn]

I finished my 830 project this week. A bearing went out on the axle and the parts got in the rear end and destroyed the pinion and some other stuff. So to fix it I had to tear the entire thing down. I started by making some splitting stands.

I had to pull everything out of the entire transmission and rear end.

Since I rebuilt the engine and case-o-matic last year, I have had virtually every bolt and nut out of this tractor and everything rebuilt front to back. Hope it works well for a while now.

 

[Fritz Maurer]

How does Case-o-matic work? Is converter, or powershift or what?

I had first heard of it in Green Magazine, they were trying to explain it but it wasn't with very much admiration.

 

[ss55]

How does Case-o-matic work? Is converter, or powershift or what?

I had first heard of it in Green Magazine, they were trying to explain it but it wasn't with very much admiration.

Case-O-Matic is a lockup torque converter instead of a clutch in front of a standard eight speed dual range transmission ( 4 X 2 ). In direct the torque converter clutch is locked up solid. In Case-O-Matic the lockup clutch is released so the torque converter can slip. Start out in Case-O-Matic and then go into Direct when you get to speed. The torque converter can freewheel down hills and it generates an increasing amount of heat into the transmission oil the more it slips, they have a big transmission oil cooler. Torque climbs fast but horsepower drops in Case-O-Matic as slip increases faster than the torque rise until the tractor stops moving with the engine still at full RPM. Slow the engine down to idle for several seconds before attempting to shift gears to minimize gear grinding.

People either really love or really hate a Case-O-Matic with very few in the middle.

 

[jon f mn]

How does Case-o-matic work? Is converter, or powershift or what?

I had first heard of it in Green Magazine, they were trying to explain it but it wasn't with very much admiration.

The simple answer is that its the same system as an automatic transmission in a car or truck but with manual controls so you have to manually shift gears and lock the converter.

 

[John Deere D]

I finished my 830 project this week. A bearing went out on the axle and the parts got in the rear end and destroyed the pinion and some other stuff. So to fix it I had to tear the entire thing down. I started by making some splitting stands.

View attachment 149481View attachment 149482

I had to pull everything out of the entire transmission and rear end.

View attachment 149484View attachment 149485View attachment 149487View attachment 149488View attachment 149489View attachment 149490View attachment 149491

Since I rebuilt the engine and case-o-matic last year, I have had virtually every bolt and nut out of this tractor and everything rebuilt front to back. Hope it works well for a while now.

Thanks for posting these pics.....
I like the Case 830's.....
I own a Case 8 speed comfort King.....
Bob.......

 

[Fritz Maurer]

I like that locking converter idea

 

[DanielW]

I like that locking converter idea

I love my 630 COM. When you need plain old pulling power, it'll outpull any similar-sized tractor by a large margin. And the COM was one of the few 'on-the-fly' shifting systems that was bulletproof right from the get-go (think of the early Ford Select-O-Speeds and IH TA's for comparison). But it never really caught on like the other systems. Unfortunately the COM was really aimed towards maintaining oodles of grunt pulling power at the cost of variable ground speed and varying effective HP output. And it came out right as most equipment was moving toward needing more constant/controllable ground speed and steady power output and PTO RPM, and moving away from the elder days of only needing oodles of good ol' fashioned grunt pulling force.

Something that always bugged me is that most tractor pull rules (even those for the most basic stock classes) don't allow torque-converters - even if they were OEM equipment. So most pulls won't allow stock COM tractors. Rather too bad, as these old girls would really shine in a good old stock pull.

 

[Fritz Maurer]

How is it for loader work?

 

[jon f mn]

How is it for loader work?

That is almost the exact system used on commercial front end loaders, so its the best there is. You can apply max force but completely control wheel slip with just throttle. That and heavy pto work like silage chopping are where they really shine. But heavy village like plowing are also great.