JDcrawlers Messageboard

Hi, With the differential style reverser, the clutch packs, the differential gears, and the entire housing that holds the mess together is running as one really fat shaft when in forward. In reverse, the clutches change things and the forward half turns forward, then the tiny differential gears come...

Hi, You should be OK as far as damage you might have caused (not to say that there isn't any previous damage). The thing would have had the clutch packs both in the halfway position, and so acted like a neutral. Sounds like nothing grabbed suddenly, so this should not have hurt anything. The real pr...

Hi, You mean, they're *not* supposed to do this sort of thing! Heck, I just figured I'd missed the section of the manual where they mention the oil peeing part! :P It's not just the old iron that does this. New stuff is equally happy to pee on you. I have a brand-new JD/Frontier sicklebar mower. Bou...

Hi,

Oooh. I bet that caused a few choice words to pop out! You find that out by trying the gears with the case still on the bench or did you wait until after the machine was reassembled?

Stan

Hi, Sounds like you have the differential-style reverser. These work by using two clutch packs, made of alternating fiber and steel discs (like a motorcycle ot auto trans clutch). One is for forward motion, and the other is for reverse. In between the clutch packs, there is a set of spyder gears. Th...

Hi, Cool! :) As fer as the two valves go, how would you do it with only one and have a double acting cylinder? The modern spool control valves still have two valves inside. It's just that these old girls have two single-acting valves out in the open with control rods to the lever. You can adjust tho...

Hi, When I first saw these photos, I thought it was a backhoe unit. I remember a guy that dug farm ponds having a 450 loader/hoe which had tanks that looked like that. However, I wasn't positive, so I said nothing. I mean, the thing is dozer, not a loader, and I never have seen a dozer/backhoe combi...

Hi, Well, there were several of those parts in the scrap heap at Disbrow Equipment Co in Pine Plains, NY at one time. Although the building became a specialty coffee roasting operation after my uncle sold it around 1982, the old scrap heap way out back might still be there. ;) The option essentially...

Hi, Well, first off, did you have a Pilot's licence for that crawler? Sounds like you needed one! Either that, or *he* needed a Crawler licence instead for that Cessna.... Yep. The headlines: Crawler crashes into Cessna at 1500 feet! You think the story is wierd here, just imagine the story as told ...

Hi,

BTW, the main reason for the oil dipstick change on the P3 420's was that they knew they were changing the hood design for the 430 and 440 series, and that one was no longer going to be able to access the oil fill cap on top of the valve cover without removing the hood.....

Stan

Hi, Just an odd bit of information. The original decals were not actually decals. The information was screen printed directly onto the metal during production. Even the yellow stripes on the later 420 series was a screenprint. It was ink rather than paint (the difference involves the size of the pig...

Hi, My personaly favorite is when plowing snow that has ice under it and the machine suddenly does a 180 with you on the business end of the whip. Then, you get to hang onto a steering lever with one hand while hanging your arse out over the tracks which are still spinning. Coming in a close second ...

Hi, Oh, yeah. The tracks do that with rattlesnakes, too. I used to live in an area chock full of timber rattlers. They were easy to avoid, all one had to do was go thru the woods on a crawler. They scarper off. However, one day while wandering thru the woods to get some firewood, I ran over an old, ...

Hi, I doubt it. I was the only one in the family that was into photography. I took lots of shots of lots of things at the time, but I never thought to take photos of farm equipment, unless it was something really old sitting rusting with a tree growing out of it. The 3010 crawlers were interesting t...

Hi,

Well, a buddy has a Clark-Air dozer. That's about as close to a flying crawler as I can come!

BTW, it's pretty much the same thing as the old Terratrac GT-25 I had.

Stan