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1996 - Volume #20, Issue #6, Page #07
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Deere 4020 Repowered With Cummins Engine

After the 404 cu. in. diesel engine on his mother-in-law's Deere 4020 wore out, Jim Woita of J & J Diesel in Lincoln, Neb., re-placed it with a Cummins 359 cu. in. naturally aspirated diesel engine. The tractor was displayed at the recent Husker Harvest Days show near Grand Island, Neb.
"It was a big job and the only one we've done so far. We're studying the possibility of offering commercial repower kits for Deere 4020's," says Woita, a Cummins ag industrial dealer.
A connecting rod bearing failed on the original engine and took out the crankshaft. Because it would have cost more than $5,000 to have a Deere dealer overhaul it Woita decided it was worth tackling the job himself. The Cummins 6B5 9A diesel engine he installed has 115 hp at 2,500 rpm's. "The new engine's frame wasn't built as strong as the one on the Deere engine so we had to build a new subframe to support it," says Woita. "We didn't have to stretch the tractor at all. However, we did have to modify the intake tube that leads from the air cleaner to the engine. We also had to modify the fuel lines.
"The original Deere engine was rated at 98 hp but a good one could actually deliver closer to 110 hp so the horsepower on the two engines is about the same. The conversion worked great and cost much less than an overhaul. We think that in many cases farmers can save money by having us in-stall a new Cummins."
Contact: FARMS HOW Followup, Jim Woita, J & J Diesel Service, Inc., 3430 N. 35th St. Circle, Lincoln, Neb. 68504 (ph 402 466-3842).

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1996 - Volume #20, Issue #6