![]() ![]() it takes 24 horsepower to run the "23 GPM" pump at 2200 PSI. It takes 20 horsepower to run a "15 GPM" pump at 2200 PSI. The JD420 & 430 crawlers used different numbers of plates depending on their serial numbers. The JD MC crawler uses qty 6 of the friction discs and 5 of the steel separator plates. Horsepower/engine size is another factor. The John Deere crawler models MC, 420, 430, 440, and 1010 use the same fiber discs and steel separator plates. A 15 GPM pump at 1200 RPM puts out a little over 7GPM. To keep cylinder speed at around 4" a second at fairly low engine speeds - a 1.4 cubic-inch-per-rev pump often called "15 GPM" is usually used with dozers and a 2 cubic-inch-per-rev AKA "23" GPM with loaders - OR dozers with rear attachments. Deere tends to use 3" cylinders on crawler-dozers and 4" cylinders on crawler-loaders. The Eaton-Cessna pump prices have gone out of this world.Ībout the pump size. It's a better built pump then the Cessna. ![]() Webster-Danfoss makes a direct Cessna replacement with a cast-iron center housing. Last year, those pumps were available brand new for $200 and for that price, paying over $100 for kit isn't usually cost effective unless the pump is perfect. Used to cost $28 - seems to have gone up. The kit will come with a new spider gasket and thrust plate. #2 - if the spider gasket is blown that goes against the metal thrust plate. #1 - when the gears and housing are worn and there is too much clearance. Generally speaking though - there is no way for the pump to lose capacity other then two ways that I know of. I contacted knight hawk and ordered complete rebuild kit $118 and will see how it goes. The gears and shaft look good with no visible signs of wear so I'm guessing it has something to do with worn out internal seals plates etc. The pump isn't leaking its loosing pressure when the oil gets hot and the backhoe slows way down. Outback farm wrote:Thanks for the feedback. Somewhere around 2.1 cubic inches per revolution. The Deere AT38801 is a direct bolt-in replacement for the 1010 crawler-loader pump. When the 1010 was new it came with either a Webster-Electric (AU11551U) or a Cessna (AU11949 U). 15 GPM pump - Cessna # AT11608Tġ010 crawler-loader or dozer with rear attachments came with a bigger 23 GPM pump with a 7/8" X 13 spline shaft. what size splined shaft?ġ010 crawler-dozer came new with a smaller approx. Main thing to know is which pump is your crawler set up for? I.e. The 1010 uses a generic SAE pump two-bolt mount - same as used by Allis Chalmers, Case, Ford, Oliver, Massey Ferguson, etc. You can buy a brand new pump for $200 if you shop around. When the shafts and bearings get worn, and/or gear faces scored, pressure works its way out the front shaft and pushes out the dust seal - and leaks. That seal is not designed to hold any pressure. When a Cessna gear pump is worn out beyond repair, it keeps blowing out the front shaft seal. The kit is for situations when the pump isn't worn -but somehow the seals get blown - which is rare. ![]() If the pump shafts, bearings, and/or housings are worn - there is no way to renew it. That seal kit is stocked by my local Deere dealer. Of course my JD parts guy tells me most of the parts for this pump are unavailable.ĭoes anyone know where I can find the complete seal kit for a Cessna 24509LBZ Deere part # AT38801? From what I can find its off of a 350 or 450 Deere Dozer. It turns out it is a Cessna 24509LBZ (AT38801). the pump on the machine is NOT the original (Cessna AT11068)!!! I did the home work and ordered the parts from Deere out my parts catalog, No problem all in stock ect. Many changes that you can look into.Outback farm wrote:I decided that the hydraulic pump on my 1010 crawler needs rebuilding. If it has an oil bath air-cleaner it's earlier then serial # 42,001 (late 1963), etc. So, if the shifter is in the dash - it's a model made 1060 to the middle of 1961. E.g., the trans shifter is in the dashboard up to serial # 21,900. If the tag is missing from the engine, you can narrow down the age by changes over the years. 810 is the model of the loader that's on your 1010. Machine serial number is on the engine block with any I know of - on a metal ID plate. Thank youġ010s started with serial # 10,001 in 1960. Could you please help me out to know if these are the correct for the ID or should I look another place for the proper numbers. Looking at a service manual for early and late models these numbers do not seem correct. I found a plate on the front of the hydraulic control console and wondered if this would be enough info. Grappleloader wrote:I recently purchased a 1010 trackloader and would like to find out what year it was made. ![]()
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