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M602 Diesel

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Dean E

04-10-2000 18:58:55




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What could be done to make the TA go into high range? Low range the tractor works and free wheels.The lever moves into the correct spot for high range but it does not shift into high range.what should I do?




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Tony

04-10-2000 19:50:42




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 Re: M602 Diesel in reply to Dean E, 04-10-2000 18:58:55  
I have an M5, which is a very similar earlier model to the 602. Your TA lever should require a hefty push (35-50#) and snap crisply into high range. This action compresses a disc-pack clutch to lock up the TA planetary reduction gears and make them direct-drive. Without enough pressure, the pack may slip and not give high range (and possibly overheat and be damaged). If the lever is soft, unbolt the round cover below and behind the lever entrance. Inside you'll see a notched ring on the pressure plate assembly. This adjusts the pressure, but it's held by a locking pin engaging one of the notches. Pull the TA lever to low range, put the tranny in neutral and use a block of wood to fully depress the clutch pedal. Use a long screwdirver or bar to gently rotate the pressure plate (it should turn easily) until you find the locking pin; pry against something other than the notched ring. Align the pin ith the access hole. I use the side of a flatblade screwdriver to press the lock pin rearward and rotate the ring clockwise a notch. Check the handle for push/snap. If too soft, continue adjusting the ring a notch at a time until it firms up; if it takes more than 5-6 notches to firm up, you may have a damaged clutch pack. If the lever is hard and snaps into high position, yet there is no high range, the only thing that comes to mind is that the ears on the clutch discs have broken off. There's no hope except to split 'er, as far as I know. You should be able to see at least part of the clutch basket directly behind the adjuster area through the adjustment cover with a penlight; tabs should be visible sticking out into the slots in the basket. It's also possible that the teeth in the center of the clutch discs are gone, but that's not visible.

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robbie

04-11-2000 09:21:47




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 Re: Re: M602 Diesel in reply to Tony, 04-10-2000 19:50:42  
Would this work for a G1000. What plate are you talking about, the small one on the side or on top. My G1000 has a plate on top under the propane tank. I sure would hate to split it in half if I can get around it.



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Tony

04-11-2000 13:30:59




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 Re: Re: Re: M602 Diesel in reply to robbie, 04-11-2000 09:21:47  
Robbie - I'm familiar with only the M5, but the basic 2-speed ampli-torc seems to be used on many models. If your handle is a single bent rod, and there is a round cover with a bolt in the center just below & rearward of where it enters the TA housing, that ought to be the adjustment port. The handle force may not be the same, but it should still require a substantial push and snap crisply. As you drive the tractor in 3rd or 4th gear and engage high range you should feel the clutch engage completely at about half to two-thirds of the force needed to reach the snap.

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robbie

04-12-2000 15:18:09




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 Re: Re: Re: Re: M602 Diesel in reply to Tony, 04-11-2000 13:30:59  
I think I will give it a try before I split it. I will try almost anything not to have to split her.



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Harrold Rhodes

04-14-2000 05:04:00




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 Re: Re: Re: Re: Re: M602 Diesel in reply to robbie, 04-12-2000 15:18:09  
If lever snaps in good but won't go into high my guess is ears on outside edges of clutch plates are gone. This would be better than planetary gear trouble would require a split.



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