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JD 40 standard

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Fred Mills

06-20-2000 00:54:07

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What is the purpose of the heavy springs attached to the lift arms? Do I need both? I see the springs only on JD 40 standard tractors.

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ToddT

06-20-2000 04:09:10

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Re: JD 40 standard in reply to Fred Mills, 06-20-2000 00:54:07

The purpose of the springs is to provide "down pressure" on the lift arms. Without this, the lift arms are not heavy enough to lower themselves with gravity. (With equipment attached is another story.)

The Standard and Utility versions with single cylinder touch-o-matics only had one spring. The Tricycle, Hi-crop, Special, and Two-row utility versions with Dual touch-o-matic had two springs due to having two independent lifts.

I'm not sure why your Standard would have two springs. Either it has been converted to Dual Touch-o-matic, someone may have changed a lift arm and added a spring, or you have a rare early version of a standard. I have a service bulletin that talks about a last minute design change before production of the 40S where Deere decided to go from two rear springs to one. The first batch of owner's manuals still showed two. I've often wondered if any 40S tractors with the two springs were actually produced.

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