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John Deere Tractors Discussion Forum
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Pull start 4250 quad range ?

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HA in Oh

11-18-2004 07:04:23




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This tractor hasn't been ran 5 hours in the last year, it is a part of an estate. We need to move it from a shed with no power to get the batteries charged. What range and gear to use to pull start? If jump started can I use my diesel pickup on one side and use another tractor on the other? Also what's this tractor worth it's a one owner about 3800 hrs, 4 post canopy, needs new rubber on back and a new seat.?

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buickanddeere

11-18-2004 14:35:32




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 careful... Re: Pull start 4250 quad range ? in reply to HA in Oh, 11-18-2004 07:04:23  
Boosting six volt batteries with 12V may get you, the trucks and the tractor covered with acid. Unless as previously mentioned it was converted to a non factory 2x twelve. Assuming it's a quad range 4250 then put in "tow" mode and roll it to the shed for service if outside work isn't possible. Tow $tarting that hydraulic $hifted and clutched tran$mi$$ion will co$t more than what it$s worth. $hould tour a Deere dealer$hip and a$k about 2355'$ etc that "Uncle Tinker" tried to pull $tart. DON"T RUN YOUR SELF OVER. Every once and a while somebody jump starts/bypass starts a tractor while it's in gear. The hydraulic transmission types are the most dangerous. 1-2 seconds after it starts and when you've let your guard down during that feeling of success. The tractor will develop oil pressure and jump right on and over you and everything in it’s way. Usually a child or two who are watching Daddy as well. It's tough on volunteer firemen picking up flat bodies with tread marks crushed into the flesh. Worse when it's a child killed or the rest of the frantic family is gathered around the tractor/body when we pull up. And some of you wonder why I get "bent and twisted" about dangerous “tinker fixes” and short cuts. I could rant about body parts flapping around PTO shafts but I doubt anyone will then run out and repair the machines/tractor shielding. " It will never happen to me"………... Famous last words.

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HA in Oh

11-18-2004 09:05:38




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 Re: Pull start 4250 quad range ? in reply to HA in Oh, 11-18-2004 07:04:23  
Thanks to everyone. The tractor was used regulerily till the winter of 03, then has been ran a few hours off and on this summer then has set the past 2 months. I will try to jump it first if no go I will take batteries out and charge. I have a 2755 that can be pull started, belville washers engage the low side of the Hi/Lo when not running. I have read on here that a 2640 w/ Hi/Lo can not be pull started. Must need oil pressure at all times. I just wanted to make sure it wouldn't damage it if I pulled it. Thanks HA

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GeeMAN

11-18-2004 13:45:23




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 Re: Pull start 4250 quad range ? in reply to HA in Oh, 11-18-2004 09:05:38  
Getting the batteries in shape or replacing them will be easiest and safest by far. Regardless of whether or not the tranny would be damaged, steering one of those things without the engine running is a pain. Completely possible, but a pain nonetheless. When jumping, connect the negative cable to a ground source on the 4250 and the positive cable to the LH battery positive terminal or more ideally, directly to the starter post if you can. On the off chance the tractor has been converted to 12-volt batteries in parallel instead of the factory 6-volts in series, it would be easier and faster to use two sets of jumpers and two vehicles, one connected to each battery as when jumping a single 12-volt. Use good heavy jumper cables as that thing will pull a lot of amps if the batteries are way down. If the tractor was operated in recent months, it should start without much trouble. Priming the hand-primer a few pumps is still a good idea, as some of the older tractors tend to lose some prime after sitting for extended periods of time.

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thurlow

11-18-2004 09:05:35




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 Re: Pull start 4250 quad range ? in reply to HA in Oh, 11-18-2004 07:04:23  
As usual, tons of dis-information; lots of it worth just what it cost you; as I understand your post, the tractor HAS been run within the last year; it CAN'T be pull started; it CAN be safely boosted, if you know (or can figure out) how..... .MY OPINION ONLY



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Gerald J.

11-18-2004 08:01:36




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 Re: Pull start 4250 quad range ? in reply to HA in Oh, 11-18-2004 07:04:23  
Isn't that a 12 volt system, not 24 volt? Aren't those two batteries either a pair of 12 volt in parallel or a pair of 6 volt in series? If 6 volt you sure don't want to kill your other 12 volt systems or the 6 volt batteries jumping 6 volt batteries with 12 volts. One battery or the other could inflate rapidly (e.g. explode). A bath in sulfuric acid can be bad for the complexion (to say nothing for the clothes which turn to nothing).

If there are only 3 battery caps per battery this is a 12 volt SYSTEM and you jump from the ungrounded battery's positive post and ground with a SINGLE 12 volt system.

After sitting 5 years the batteries are probably done and jumping may not accomplish anything. New batteries are needed.

Seat cushions cost around $100. Rear tires $400 to 1100 (radials are the most expensive) each, front tires $90 to 150 each.

Sitting 5 years has not enhanced the value of the tractor, at least one cylinder sleeve would be rusty and could wear fast. Before cranking you might want to clean out the wasp an mud dauber nests from the intake and exhaust pipes. And put in a new air filter to replace the one perforated by mice.

Gerald J.

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GeeMAN

11-18-2004 07:46:48




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 Re: Pull start 4250 quad range ? in reply to HA in Oh, 11-18-2004 07:04:23  
Want the easiest solution? Remove the batteries for charging. After sitting for five years, they may not take a charge, and you'll be there forever trying to jump it, particularly with a substandard set of jumper cables or if it's cold. If the batteries won't take a charge, replace them. And pump the hand primer on the injection pump before attempting to start the tractor. An engine oil and filter change after getting it running would also be advisable.

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walter squires

11-18-2004 07:36:36




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 Re: Pull start 4250 quad range ? in reply to HA in Oh, 11-18-2004 07:04:23  
These tractors have a (wet) perma-clutch so when you have no hydraulic pressure the clutch is disengaged, You can pull these tractors by putting the inside shift lever in N and the outside shift lever between A and Park.
To jump start a 50 series:
Make sure the tractor is in park
Remove the left battery step cover
Connect the neg. jumper cable to the frame
Connect the pos. jumper cable to the cable that goes from the battery to the starter
This is also the proper procedure for charging.
I strongley suggest you get the tractor moving under its own power for it hard to handle without any hydraulics.
Been there, Done that.....

Good Luck, Walter

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Bob

11-18-2004 08:10:54




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 Re: Pull start 4250 quad range ? in reply to walter squires, 11-18-2004 07:36:36  
Walter, at least you're not dislexic, like I am this morning! You are absolutely correct on the hydraulic wet clutch! (I read "4250" as "4520", a totally different animal with a dry clutch!)



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walter squires

11-18-2004 07:39:07




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 Re: Pull start 4250 quad range ? in reply to walter squires, 11-18-2004 07:36:36  
Had a brain fart, Tow is between C and D



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WTW (Caution!)

11-18-2004 07:30:22




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 Re: Pull start 4250 quad range ? in reply to HA in Oh, 11-18-2004 07:04:23  
Do NOT tow or pull this tractor in any gear without engine running as damage can result rather quickly. Put you range lever in the tow position before you move or tow the tractor. Tow position is located between "C" and "D" on the range shift lever. The transmission has to have lube oil pressure to survive just as the engine has to have oil pressure. Towing the tractor with out it being in a tow mode will cause parts to turn without lubrication. So don't do it or a cutting torch may be required to disassemble and repair it. You are safe to tow it as long as it is in the tow mode. DW

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Bob

11-18-2004 07:37:44




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 Re: Pull start 4250 quad range ? in reply to WTW (Caution!), 11-18-2004 07:30:22  
If he gets it in a high enough gear so that he can actually crank the engine over while pulling it, there will be no harm to the transmission.

Damage to the transmission from towing occurs because with the transmission in neutral the transmission top shaft, which drives the transmission oil pump is not turning, and it is this shaft that drives the transmission oil pump.

To repeat, pull starting will not hurt the tranny, but towing it without the engine turning, at any shift position other than "TOW" will deprive the upper shaft of oil.

(When it's in "TOW", the gears on the upper shaft are not being turned by the gears on the lower [Output Pinion] shaft, so there's no need for lube to the top shaft.)

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GeeMAN

11-18-2004 07:43:47




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 Re: Pull start 4250 quad range ? in reply to Bob, 11-18-2004 07:37:44  
If they could crank the engine, I would think they would start it instead of towing it.



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Bob

11-18-2004 07:56:17




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 Re: Pull start 4250 quad range ? in reply to GeeMAN, 11-18-2004 07:43:47  
GeeGuy,

If you will notice, the poster's original question was "Can I Pull Start a 4520 Quad Range?", and I gave him a factual answer to that question.



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GeeMAN

11-18-2004 13:41:02




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 Re: Pull start 4250 quad range ? in reply to Bob, 11-18-2004 07:56:17  
I wasn't knocking you, just stating that if a guy had the engine cranking, it would be a waste of time to pull it. And I've never seen a 4520 Quad-Range, have you? We could also get into just how hard it actually is to effectively steer a 4520 OR a 4250 with no hydraulic pressure. Clearly removing the batteries and charging them would be the easiest and safest way to start the tractor.



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Bob

11-19-2004 18:55:01




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 Re: Pull start 4250 quad range ? in reply to GeeMAN, 11-18-2004 13:41:02  
I corrected myself above for transposing the tractor model number, and appologize to you, also, for my incorrect statement!



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Fred G

11-18-2004 07:34:00




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 Re: Pull start 4250 quad range ? in reply to WTW (Caution!), 11-18-2004 07:30:22  
Maybe my memory is faulty but I recall there also being a trans disconnect switch/lever somewhere on the trans? Now that you said it I do recall the "tow" setting between C and D ranges, just like the syncro. Maybe the disconnect was only for powershift tractors, it been a while (20 years) since I read the owner's manual and almost that long since I've operated one!



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GeeMAN

11-18-2004 07:42:19




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 Re: Pull start 4250 quad range ? in reply to Fred G, 11-18-2004 07:34:00  
The powershift tractors have a tow disconnect. The synchro-range and quad-range tractors have a tow position built into the shifter mechanism.



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RalphinWI

11-18-2004 07:18:33




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 Re: Pull start 4250 quad range ? in reply to HA in Oh, 11-18-2004 07:04:23  
I'm not sure pull starting will work. Tried a 2640 with a loaded 3/4 ton pickup, stopped the pickup dead in its tracks. You will want the tractor in the highest possible gear, and I doubt if the hydralic H-L will shift into the high range without hydralic pressure. If you have the power to pull it in D4L it may work. If on level ground (you don't have much for brakes)tow it to a power supply. Battery terminals all need cleaning anyway, remove batteries and give them a good charge.

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