JDcrawlers Messageboard

I got my 420 in 3 pieces, engine final drive and frame and it took me about 3 years and several dollars to fix it. I've never regretted it and love to fool around on it and if I run out of something to do I'll just take something apart to look at to see how its doing. Jump in and get your feet wet a...

A lathe needs to be level within .0002" front to back and side to side. A lot of older lathes have a dip in the ways from sanding and not cleaning which causes them to cut a taper. The tail stock needs to be centered, if it isn't it will cut a taper when using a center and it will break tools such a...

Thanks for all of the input. Next time we have 12+ inches believe I'll try the 420.

I own a 420 JD w/#62 blade, a 50hp bobcat and a 82hp Kubota front end loader, a parking lot about 100ft x 200ft. Which would be best for pushing snow? I never had to push much snow.

Thanks for the info, that is exactly what I needed to know.

I used grade 8 fine thread bolts and I torqued them properly however the holes in the pads, cleats or whatever were worn larger than stock specs. By cleats or pad I mean the part that comes in contact with the ground to harness the power of the crawler. So with the holes being to large the pads work...

I purchased a used set of rails a few years ago and the cleats were worn down so I had good cleats so I changed them. I didn't realize the holes in the cleats were important and the bolts need constantly tighten. Can I weld the cleat to the rail or is the metal used on rails and cleats high carbon s...

Thanks for the thoughts, I always store it in a building although normal rainfall for us a year is around 40" we've already had 44"
Thanks again.

I own a 1977 IH 140, cultivating tractor, and the clutch sticks after setting a while. The clutch is the same mechanical concept as the JD 420C engine tranny clutch is there anything I can do to prevent this? I bought the tractor new in 1977 and its been well maintained and I don't know why all of a...

I lay down a 4x4 wood drive on it until dozer rocks forward, then I put a block that is precut under the drawbaw(fits tight), then I activate the blade down and the dozer raises it self, then I put jackstands under square pieses that tracks are hooked to. Then you're ready to have fun.

Thanks for the comments. I repaced the plugs with autolite machine would hit on both cylinders then but still didn't have any power. Checked the coil it was very hot to touch. Checked the module inside the distributor it wouldn't ever go to a dead ground it read infinity unactivated and 95 kilo-ohms...

I timed the engine to shop manual specs, which is to spark at a fast idle(2150 rpm)

I installed a GM one wire alternator on my 420C. I converted it over to 12VDC negative ground. I also changed the igniton system to solid state. I got the kit from denny's carb shop and it included solid state breaker, magnet to go on distributor cam, thunder bolt coil, ballast resitor and wires, I ...

pictures? How much?

I had the same question a few years ago and I found out there isn't one. So I understand You pick one heat it and beat it apart.