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Oil Cooler Boosts Tractor's Hydraulic Capacities
If you've got a job to do that overheats your hydraulic system, you'll be interested in this "cooler" built by Alberta farmer Raymond Hart.
He uses a Case 2470 4-WD tractor to pull a chain-type earth mover fitted with an "endless" chain loader. It'll handle up to 8 yards of dirt at a time and is operated by tr
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Oil Cooler Boosts Tractor's Hydraulic Capacities TRACTORS Hydraulics 24-3-40 If you've got a job to do that overheats your hydraulic system, you'll be interested in this "cooler" built by Alberta farmer Raymond Hart.
He uses a Case 2470 4-WD tractor to pull a chain-type earth mover fitted with an "endless" chain loader. It'll handle up to 8 yards of dirt at a time and is operated by tractor hydraulics.
"This tractor's hydraulics were originally designed to handle just the power steering and front-end loader. It did not have enough capacity to run the earth mover," says Hart. "So I bought a large hydraulic pump and mounted it on front of the tractor's diesel engine and installed a 30-gal. reservoir behind the cab. Then a new problem developed.
"The hydraulic oil was running too hot. The hydraulic motor on the earthmover would get extremely hot and smoke.
"A friend of mine suggested I mount a 45-gal. drum of water on the tractor drawbar and coil up about 60 ft. of 1/2-in. dia. copper tubing inside the barrel. I attached the line coming from the hydraulic pump to the copper tubing and then hooked the line to the 30-gal. reservoir to the output from the barrel.
"Before I installed the cooler, I could only run for 3/4 of an hour and had to shut down for four hours before it was safe to go again. Since installing the cooler, I can run continuously 12 to 15 hrs. a day. I've loaded about 40,000 yards of dirt in the past two years since making the change.
"To install the hydraulic pump on the front of the tractor, I had to alter the radiator. I needed to make room for a driveshaft and universal joint which run to the pump, which is mounted ahead of the radiator.
"The water barrel holds 40 gal. of water and had to be mounted very firmly so it would stay in place on rough ground. The barrel sits on top of a large steel pulley with four hold-down bolts. It never moves.
"The final modification I made was installing a 3-speed transmission off a 1-ton Chevy truck behind the hydraulic motor on the earth mover. The output shaft connects to the drive shaft on the chain. It was originally pto-powered."
Contact: FARM SHOW Followup, Raymond H. Hart, Box 578, Claresholm, Alberta T0L 0T0 Canada.
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