JDcrawlers Messageboard

Hi, I just got off the SAME website, and it looks like the smallest one is 70 HP, which puts it into the JD450 class. I'd like something smaller, or at worst no bigger. So I'll keep on looking at used JD350 and JD450 machines. I'm not holding my breath that there will be a new small crawler from Dee...

Hi, The Yanmar is interesting. At least they have rollers on the bottom to carry some load unlike many other things I've seen. My ususal beef about rubber tracks is not that they're made from rubber, it that they tend to be wrapped around wheels without any rollers. So, the load is carried just like...

Hi, It's rather annoying to me that Deere has never made a 420 sized crawler in all these years since the end of the 1010 line. I can see where the market could well have dried up come the end of the 1010, but that was so long ago that most of the old iron is pretty well worn out. I'd absolutely lov...

Hi, No, silver is the best but it does have it's issues, one of which is that it likes to corrode. Gold is quite good, and has the advantage that it doesn't oxidize like silver, copper and aluminum (all better conductors) do. It has the disadvantage of being a lot more costly. We use it a lot in the...

Hi, Soak 'em in a puddle of water for a couple days, then drive around for a while. Water will loosen the rust scale better than anything and then running will drive it out between the pins and bushings. The bad part is that if you don't then use the machine enough, they'll just set up again. It hel...

Hi,

Just thought I'd point out that the model 64 blade for the 440 was a power angle tilt blade. Pretty sweet if you happen to have one....

Stan

Hi,

That's page 12 of the old document. It's page 10 of the PDF the link takes you to.....

Stan

Hi, It's not the reverser that does this, it's the simple act of backing up. I suppose if one worked in a high gear a lot, then having a reverser would accelerate the wear rate on the reverse side. Of course, working in a high gear a lot would also accelerate the forward wear rate as well. So, in th...

Hi, I guess that depends on how much backing up vs. running forward a given machine has done. I know I back up just about as much as I go forward. Keep in mind that reverse operation wears the sprockets at a greater rate than going forwards does, so the overall wear is actually about equal going for...

The change to negative ground was not at the same time as the change to 12V. The 440 ICD is 12V positive ground. Silver is notorious for electromigration.... I think you managed to find one of the rare exceptions to the changeover. I was thinking overall, as in cars, trucks, etc. as well as tractor...

Hi, The galvanic reaction mentioned is really more of a metal migration in the presence of an electical field, although for the purposes of our discussions here we can pretty much equate both phenomenons as being the same thing. This is referring to the movment of the silver between the contacts of ...

Hi, Well, the only practical difference between neg and pos ground *was* how the points pit. Doesn't matter now, but here's the story in case anyone cares. I researched this years ago out of curiosity (why did everyone change?)..... In the early days, the contact material used for the points was sil...

Hi, Yes, I think the blade model numbers from the 440 carried over to the 1010, so this would be a model 63 in both cases. The 63 blade and frame is pretty much the same as the 62 blade used on the 420, as far as I could ever tell. The only obvious difference is that the mounting frame for the lift ...

Hi,

Man, don't you just love it when a plan comes together like that!

Stan

Hi, Yeah, I thought the same thing - that it's a 5-roller missing two bottom rollers and the top idler on each side. Looks to me like there's too much space between the front idler and the first roller on both sides. Looks like something is missing up front there..... Then, again, my 420 has the roc...