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Old tractors grinding when you try to put them in gear

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ryan

04-02-2003 16:28:25




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Why do all old tractors seem to grind when you try to put them in gear? They eventually stop and then the shifter falls in gear and your good to go. Is there any way to remedy this? some kind of adjustment or something?




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JIM

04-04-2003 20:43:54




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 Re: old tractors grinding when you try to put them in gear in reply to ryan, 04-02-2003 16:28:25  
Had a problem with my M. Replaced the clutch disk, pressure plate, throw out bearing and pilot bearing. Still would grind with all the adjustment I could get out of the clutch rod. I had a badly worn clutch pedal and cross shaft which the clutch and brake pedals turn on. rebuilt the shaft and everything worked well.



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john d - You can try this....

04-03-2003 10:34:19




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 Re: old tractors grinding when you try to put them in gear in reply to ryan, 04-02-2003 16:28:25  
If you're talking about an old Farmall, as the others said, it's a case of push the clutch and wait. If it's an old H or M with a lift-all (belly pump) hyrdraulic system and you just CAN'T force yourself to wait, you can pull the hydraulic lever after the clutch is pushed, and those transmission gears will stop in a millisecond!



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Rick(MN)

04-02-2003 19:55:47




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 Re: old tractors grinding when you try to put them in gear in reply to ryan, 04-02-2003 16:28:25  
If everything is right in clutch, gears should not grind after 2-3 seconds in the winter and 3-5 seconds when it is warmer. A couple of common problems I have found that make them "grinders" are a sticky pilot bearing and clutch dust and rust building up inside the flywheel. Another common problem is the clutch disk not sliding away from the flywheel when the clutch disk is released because of either rust or a buildup of crud on the input shaft. In all 3 cases, it is a cheap fix. In extreme cases, the input shaft have serious grooves worn in it from the clutch disk that it drags on the flywheel when released. This is more common in tractors with a TA, but I have almost never seen it on the older ones. Rick

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Bryce Andreasen (Magnum)

04-02-2003 19:13:10




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 Re: old tractors grinding when you try to put them in gear in reply to ryan, 04-02-2003 16:28:25  
Both of my tractors (H and 400) grind prety bad, but you just have to think about the farmalls, or most of them, they are running at engine rpm., it's like making a tanker semi stop on a dime, it's just not going to happen. One trick i've learned, is when you know your trans. well, like when shifting from 5th to 4th, you can put in the clutch, take it out of fifth, let the clutch out, and when it seems like you would be going the speed in fourth, push the gearshift lever in, it sould work, mine does.

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dave

04-02-2003 19:11:55




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 Re: old tractors grinding when you try to put them in gear in reply to ryan, 04-02-2003 16:28:25  
The others have covered this well, my additional comment is before putting the pto in gear, make sure you are in a gear with transmission. I probably will catch some flack but if your tractor starts well, put the thing in gear before you start it up. Good luck Dave



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none

08-22-2003 00:31:37




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 Re: Re: old tractors grinding when you try to put in reply to dave, 04-02-2003 19:11:55  
Thats how the reproduced Farmall M manual I have says to start tractor: Put in gear, push in clutch and start. Others are right to, just give it time to wind down & stop before meshing gears



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Gary-Miss

04-02-2003 18:04:02




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 Re: old tractors grinding when you try to put them in gear in reply to ryan, 04-02-2003 16:28:25  
It just takes awhile for all of that stuff to stop turning. Big trucks have a clutch brake that stops the input shaft on the transmission from turning when you push the pedal ALL OF THE WAY DOWN. Cars and most pickups have synchronizers which are, essentially, brakes that make the drum and the next gear rotate at the same speed. Tractors don't have that because you are usually in the same gear for hours.

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gene b

04-02-2003 17:58:37




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 Re: old tractors grinding when you try to put them in gear in reply to ryan, 04-02-2003 16:28:25  
The pilot brng in the crankshaft is probably dry by now and worn after 50yrs or so it has a right to be. If you replace the clutch sometime and then also put in a new pilot bng and the rite lube the condition will improve much.



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CNKS

04-02-2003 17:43:27




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 Re: old tractors grinding when you try to put them in gear in reply to ryan, 04-02-2003 16:28:25  
There is no adjustment. The gears are not synchronized. Use of 140 trans fluid instead of 90 will help some. Put rpm at low idle and wait a few seconds. Wide open throttle guarantees grinding. Usually only occurs the first time you push in the clutch. Should not occur to any great extent when shifing up or down (quickly) on the fly unless you shift to neutral and release the clutch for some reason.

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The Red Barron

04-02-2003 16:59:37




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 Re: old tractors grinding when you try to put them in gear in reply to ryan, 04-02-2003 16:28:25  
It almost certainly has virtually nothing to do with your clutch releasing properly. In days of yore, gears were cut with what they termed "square teeth" meaning that the end of the gear teeth were simply cut by running out the cutting die as opposed to somehow tapering the ends of the teeth. This results in endless grinding during shifting unless the drive train after the engine itself is at a dead stop. You are going to have to wait for things to stop before shifting unless you get proficient at "shifting on the fly"--most likely at the expense of your gear teeth which are worn to an unknown quantity. If you are lucky enough to have some sort of belt pulley or simply the shaft which drives it--you can watch it when you push in the clutch. When it stops you can shift without the "grind me a pound" syndrome--otherwise you are just going to have to push in the clutch, wait and be patient. There is no other substitute.

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F14

04-02-2003 16:42:38




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 Re: old tractors grinding when you try to put them in gear in reply to ryan, 04-02-2003 16:28:25  
Mine doesn't. Most likely your clutch isn't releasing properly, you aren't waiting long enough for things to coast to a stop, or the tractor is moving a bit while you're trying to shift.



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