JD 630

bruce werner · Dec 27, 2009

I did a lot of cosmetic restoration to a 630 a few years back, including paint, new tires etc, fixed a lot of little stuff. Motor seemed good so I left it alone. However, I"ve worried a lot about the oil pressure. I"ve used 15W40 oil in it, and start out with only 20 Lbs pressure, After she"s hot, it drops to about 15. Does not use any oil, and sounds great, seemingly all is well. Should I be concerned?, and maybe get a new oil pump---or even more? What is normal for this engine? Thanks

mike321 · Dec 27, 2009

10 psi per 1000 rpms. I think you have enough, unless Deere says different.

mike321 · Dec 27, 2009

10 psi per 1000 rpms. I think you have enough, unless Deere says different.

bruce werner · Dec 27, 2009

Thanks Mike, I think those engines are about 1100 or maybe a bit more RPM's wide open, so maybe I'm just fine.

johndeereman · Dec 27, 2009

deeres went by volume not pressure but if you are worried you can turn the oil pump up if my memory serves me right under the pulley theres a square plug you remove that and you should see a slotted screw thats your adjustment

PJH · Dec 27, 2009

I dialed my 630 up to 20 PSI, warmed up. Seems like I read in one of the manuals that 20 was the correct PSI, keeping in mind that my "standard" was a cheap replacement dash guage.

Paul

JD 630

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