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JD 40 gearshift

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Fred

01-21-2000 11:58:44




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Just bought the 40 and got it home. The gear shift lever is "L" shaped and goes around in circles. Don't have a manual yet so was wondering if this is serious or not.




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clooney

01-21-2000 12:34:11




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 Re: JD 40 gearshift in reply to Fred, 01-21-2000 11:58:44  
Fred, not serious,there is a pin in shift tower on the top ft. edge that engages a slot in shift lever ball. It is either broken off or missing. I usually make a new one about the size of the hole, then braze it in. The manual says to peen it in place by holding a piece of steel inside & peeing on the outside but if you braze it it won't come loose again. If the slot in the shift ball is really worn you might have to weld it up & cut new slot with a die grinder. Let me know if you need a picture & I will scan you one. Be careful with the shift boot they are hard to find. (if anyone has a source please post)

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RJones

01-24-2000 08:18:37




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 Re: Re: JD 40 gearshift in reply to clooney , 01-21-2000 12:34:11  
I just bought a 40 T, my second one, and both have had terribly sloppy shifters. I have had a problem with the shifter going into neutral but the tractor still being in gear. Is this pin and shift ball my problem? If it is I would really appreciate a picture showing how to fix this. I have all of the tools to do this I just lack the experience. Thanks in advance!!



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clooney

01-24-2000 15:21:01




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 Re: Re: Re: JD 40 gearshift in reply to RJones, 01-24-2000 08:18:37  
RJones,If your transmission is going into neutral by itself while driving,it is probably worn bearings in the transmission, or the shift forks "detent balls" or "shafts" are worn (the shafts have notches machined in them & spring loaded balls keep the transmission in the gear you put it in. If it is going into neutral when you are shifting, it could still be the "detents",but more than likely it is a worn shifter upper bearing, or the shifter ball is worn. Look at the shifter & try to move it up & down, if it moves up & down more than just slightly replace the upper shifter bearing & possibly the shifter, or make a shim to go between the upper snap ring & the upper bearing to remove all the vertical play in the shift lever. While you have the shift lever out look at the bottom ball on the shift lever & see if it is badly worn. If it is, build it up with weld & grind it round again. The pin in the tower just keeps the lever from rotating, but the lever is straight below the pivot ball & shouldn't cause it to go into neutral. Before you go into the shifter very far you should get a repair manual,it will make things far more clear.

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RJones

01-25-2000 07:49:30




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 Re: Re: Re: Re: JD 40 gearshift in reply to clooney, 01-24-2000 15:21:01  
I am sorry I didn't make myself clear enough on my first post, but my tractor is not jumping out of gear. When I have driven a while in 3rd and stop and attempt to shift to 2nd, the shifter comes out of third and into the neutral position but sometimes it does not take the tractor out of third. If you let out on the clutch, of course, the tractor takes off with the shifter in neutral. I can shift back into 3rd and back to neutral and it will take the tractor out of gear. I had this problem with the other 40 I had a few years ago. Again, sorry I was so vague about the problem and thanks for everyone's help.

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clooney

01-25-2000 15:18:26




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 Re: Re: Re: Re: Re: JD 40 gearshift in reply to RJones, 01-25-2000 07:49:30  
RJones, no need to apologize, that is why they allow follow up posts. It still sounds like wear in the shifter ball, the ball on the end of the shifter,or the upper bearing on the shifter. Especially if there is vertical play in the shifter. Or all of the above combined. Wear in the detent balls or shaft notches could contribute to the problem also. Wear in the shift forks to allow them to turn farther apart when shifting should be looked at also.

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RonMC

01-24-2000 13:33:39




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 Re: Re: Re: JD 40 gearshift in reply to RJones, 01-24-2000 08:18:37  
Hi - just e-mailed a diagram from I&T, hope it helps. Anyone else wants the same, e-mail me or post under this. RonMC



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Fred

01-25-2000 06:02:27




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 Re: Re: Re: Re: JD 40 gearshift in reply to RonMC, 01-24-2000 13:33:39  
Ron, my manual still hasn't arrived yet. If you don't mind, send me that picture also. Thanks.



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RonMC

01-25-2000 07:31:23




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 Re: Re: Re: Re: Re: JD 40 gearshift in reply to Fred, 01-25-2000 06:02:27  
It's on the way, Fred



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Henry

01-23-2000 10:01:43




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 Re: Re: JD 40 gearshift in reply to clooney , 01-21-2000 12:34:11  
clooney: should have addressed my question to you rather than Fred. Sorry



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Henry

01-23-2000 09:58:05




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 Re: Re: JD 40 gearshift in reply to clooney , 01-21-2000 12:34:11  
Fred: Does the same fix of the shifter wobble problem apply to the JD420. Mine does the same thing. Thanks Henry



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clooney

01-23-2000 13:22:38




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 Re: Re: Re: JD 40 gearshift in reply to Henry, 01-23-2000 09:58:05  
Henry,if your 420 has a 4-speed trans. it has the same transmission as a 40. If it has the 5-speed I think the shift tower is different. Let us know what trans you have. --clooney



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Henry

01-23-2000 14:41:43




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 Re: Re: Re: Re: JD 40 gearshift in reply to clooney, 01-23-2000 13:22:38  
clooney -- My 420 std. s/n 86932 has the 4 spd box. I took the shift tower cover bolts out to take a look at the situation but it appeared tha the cover would have to be taken off the hydraulic area to get the shifter out, so I put it back on until I had more info. While we're at it, how do I check the fluid levels in the hydraulics, transm and rear axle. Obviously I need a manual. What are the best sources? Thanks for the help!

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clooney

01-23-2000 15:39:45




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 Re: Re: Re: Re: Re: JD 40 gearshift in reply to Henry , 01-23-2000 14:41:43  
Henry, you should be able to remove the snap ring around the top of the shift lever & pull the lever out to inspect it & the pin. I think the 420-4spd is the same as the 40-4spd when it comes to pulling the shift cover. You will probably have to drain the touch-o-matic then undo the hydraulic lines,then remove the the 2 nuts on the load control spring (they are on the tongue that the upper link goes in),then remove the return spring (it runs from the l/h upper lift arm to the final drive,then remove the (4) bolts that hold the touch-o-matic on. BE CAREFUL, that baby is top heavy,then slide to the rear just enough to allow the shift cover to come off. You might be able to slide it rearward enough without draining it or removing the lines but DO NOT bend the lines. Maybe somone with a 420-std manual can verify this is correct on a 420 also.--John Deere books & manuals can be ordered from "John Deere publications" 1-800-5227448 or 1-309-7652967

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ToddT

01-22-2000 04:03:03




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 Re: Re: JD 40 gearshift in reply to clooney , 01-21-2000 12:34:11  
I purchased a shift boot at my Deere dealer last year without a problem.



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Fred

01-21-2000 14:01:41




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 Re: Re: JD 40 gearshift in reply to clooney , 01-21-2000 12:34:11  
Thanks, My manual is supposed to be in next week but atleast now I can sleep a little easier.



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