John Deere 4430 [no start] - The Combine Forum
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post #1 of 19 (permalink) Old 04-23-2019, 12:19 PM Thread Starter
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John Deere 4430 [no start]

I may have the opportunity to buy a 4430 incredibly cheap.......but.....

It's from an estate... what I know about it is that the gentleman that owned it was not mechanically inclined..... at all.
I understand it used 2, 6 volt batteries.... in which said gentleman installed 2, 12 volt batteries.
Also apparently the engine is seized because last time it ran.... it shut down with a clunk....

So take all that info with a grain of salt. I'm not offering much money due to how much is known [or, unknown] and how far I need to go to get it.

Question 1- what happens on these tractors if given 24v?
Question 2- these engines have any tendency of catastrophic failure?
[No rod has exited block]


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post #2 of 19 (permalink) Old 04-23-2019, 01:24 PM
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2 6 volt in series is 12 volts, 2 12 volt parallel is still only twelve volts. Are you sure it had 24 volts applied to it?

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post #3 of 19 (permalink) Old 04-23-2019, 02:25 PM
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They where decent engine for there day other then hard starting. The cam driven oil pump gives trouble if started lots in winter. Ive only see a few that had bad failures. Mainly because of cam or oil pump gear striped off. Not sure about 24v what would happen burnt alt and probably gauges in the cab.
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post #4 of 19 (permalink) Old 04-23-2019, 07:36 PM
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I wouldn’t worry so much about electrical. If the engine seized that’s not good. The 404 was a reliable engine for it to seize indicates either a lot of hours or lack of maintenance
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post #5 of 19 (permalink) Old 04-23-2019, 08:45 PM Thread Starter
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I need to have a closer look at it.. I would imagine that 12v batteries were installed in the same configuration as if they were 6...
A lot is unknown at this time.
I just didn't know if there were any controllers in a tractor of that vintage... an alt and a few gauges I can desk with.
I dont even know the hours on it...
I read that they were hard starting usually because the valves begin to settle too deep in the seats lowering compression.
Did they typically have 1000/540 PTO??
Transmissions were tough?

Thanks.

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post #6 of 19 (permalink) Old 04-24-2019, 12:26 AM
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Yes always had both pto's quad range are pretty tough trans not the best shiftng but there decent when you get used to them. I got 10k hrs out our 4440 trans before we had to do the top shaft. Clutchs have never been touched dad bought it new 79.
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post #7 of 19 (permalink) Old 04-25-2019, 12:04 AM
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If they hooked them up is series then you would have 24 volt. If in parallel then you’d have 12 volts. As for the engine locking up it is probably the teeth on the cam gear have stripped that drive the oil pump. Common failure if not inspected regularly. You can take the tach drive off the side of the block and inspect the gear
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post #8 of 19 (permalink) Old 04-25-2019, 08:34 AM
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No controllers. Transmissions were good we put 20000 hours on a quad range with out problems
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post #9 of 19 (permalink) Old 04-25-2019, 08:40 AM
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if the motor is seized, then you can replace it, or part out what's left that's good ..

regards, warren
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post #10 of 19 (permalink) Old 04-25-2019, 09:50 AM Thread Starter
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Quote:
Originally Posted by BeckmanFarms View Post
If they hooked them up is series then you would have 24 volt. If in parallel then you’d have 12 volts. As for the engine locking up it is probably the teeth on the cam gear have stripped that drive the oil pump. Common failure if not inspected regularly. You can take the tach drive off the side of the block and inspect the gear
Thanks for that tidbit... I'll check it next time I'm out there.

Is there a easy way to manually turn those engines over?
Pry bar through hole to ring gear or a BIG bolt on the front pulley that's easy to get a wrench or socket onto?


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