turning up the injection pump on a 1959 730 diesel

JDalltheway1959730D · Dec 11, 2012

i need to know how to turn up the pump. what is the right way to do it? thanks

buickanddeere · Dec 11, 2012

In all honesty. There is no right way. Those engines are about
maxed out , more fuel is going to just make extra smoke, heat
and dilution of the lube oil.
The service manual has several pages of text and
illustrations on how to set the rack.
What are your motives and plans

just thinkin · Dec 11, 2012

First of all make sure you want to. More black smoke on this tractor is not always better. A dyno fee is well worth the money when setting a 30 series pump. You set the fuel up by removing the square cover on the back of the pump, has four bolts. In there you will find a set screw with a jam nut lossen it and turn it one turn then check and make sure you changed the smoke from the stack.

thesmoothedeere · Dec 11, 2012

I was going to post ,, Don't let b and d see this post ... too late . I don't see any reason to turn them up either . Already a powerhouse.

just thinkin · Dec 11, 2012

Disregard my remarks. I was brain challenged when I read your post I was thinking of a 730 Case diesel. Sorry

JDalltheway1959730D · Dec 11, 2012

i already have free use of a dyno so that isnt a problem but the motor is needing more fuel because of the way my grandpa and i set it up. and since he passed away i didnt know how. thanks

Dalet · Dec 11, 2012

(quoted from post at 21:26:33 12/11/12) i already have free use of a dyno so that isnt a problem but the motor is needing more fuel because of the way my grandpa and i set it up. and since he passed away i didnt know how. thanks

I hope you were in the will.. You and your Grandpa did this? You should have did more than handing wrenches to him. He knew what he was doing. If your Deere is as good as you say it is, leave it alone. I bet your Grandpa knew what he was doing.

JD Seller · Dec 11, 2012

You don't just "set the pump" on a JD 730 diesel. You need to adjust the rack to change the fuel delivery. To do that you had better have done a few of them or buy the factory manual and go set by step to get it correct.

I have seen several of them ruined because someone adjusted the rack without know what they where doing.

This is not something you can read few paragraphs on a web site and go do. I would either hire someone that really knows how to do it or buy a manual and study it an ask questions to learn what you are doing before you do it.

JDalltheway1959730D · Dec 12, 2012

(quoted from post at 20:06:41 12/11/12)

(quoted from post at 21:26:33 12/11/12) i already have free use of a dyno so that isnt a problem but the motor is needing more fuel because of the way my grandpa and i set it up. and since he passed away i didnt know how. thanks

Click to expand...

I hope you were in the will.. You and your Grandpa did this? You should have did more than handing wrenches to him. He knew what he was doing. If your Deere is as good as you say it is, leave it alone. I bet your Grandpa knew what he was doing.

i am. and my grandpa and i built it and restored it when i was just 8 so handing wrenches was about all i was able to do at that time.

mkirsch · Dec 12, 2012

Out of curiosity, what makes you think that "it needs more fuel?"

What are you trying to accomplish through this?

Understanding that might help with people that are telling you, "Don't!" If you're trying to fix a problem.

rrlund · Dec 12, 2012

That was my thought. Just gonna drip off the drip tubes.

1206SWMO · Dec 12, 2012

I"m guessing that this guy would know how to turn a pump
up..Rantoul,Illinois 2011..

JDalltheway1959730D · Dec 12, 2012

(quoted from post at 07:43:17 12/12/12) Out of curiosity, what makes you think that "it needs more fuel?"

What are you trying to accomplish through this?

Understanding that might help with people that are telling you, "Don't!" If you're trying to fix a problem.

the reason i believe it needs more fuel is that we had the exhaust and intake manifolds machined out for more air flow and it was even bored and sleeved and turning up the fuel was the last thing he was going to do with it before he passed

buickanddeere · Dec 13, 2012

Depending on the wear on the cam lobes if it wasn't re-ground
on the overhaul. And the type of valve and valve seat grinding.
The airflow maybe less than factory specs even if the
manifolds and ports were cleaned up.
Only way to really know is to use a dyno and measure
exhaust gas temps.
Yes we know 99.9% of the time Bubba just gets on the rack
and starts cranking up the delivery and tries to make the
tractor into something it isn't.
Extra heat, higher pressure and raw unburned or heavy soot
doesn't make it good for that expensive 60+ year old engine.

showcrop · Dec 13, 2012

I know a guy who has about 25 JDs including about ten that the pulls. He does extremely well with his 730, which tells me that it is producing a little extra power along with smoke. He told me that he had worked on both the pump and the injectors. I assume that he got injector tips with more holes.

buickanddeere · Dec 13, 2012

If he was using factory parts on the 730. He may have
swapped the 720/730 6 x 10thou tips with 6x 12thou tips from
a late 820/830/840. Same 13mm pumps on all of those.
The 70,80 and early 820 used 10mm pumps. Five hole tips
iirc.

turning up the injection pump on a 1959 730 diesel

JDalltheway1959730D

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