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JD 1070 Clutch Replacement
Anyone here ever replace a worn out clutch on a 70 series JD? Went to use my tractor yesterday and found out I could not shift with engine running. I did try to adjust linkage but could not get any neutral action except in neutral. I thought if the clutch were worn then I would not be engaged, as it is I can't disengage drive with clutch depressed. I can disengage PTO on second clutching action. Am I missing something? If anyone could shed some light on what might be happening please post. I will start going through my repair manuals. Only 550hrs but I bought it off a rental Co. that I think used a Highway sweeper on it. Thanks
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JD 1070 Clutch Replacement
Eric
It sounds like the clutch plate is rusted to the flywheel. Was the tractor stored outside? You can move the tractor up against an immovable object like a big tree, place it in first or reverse and put your foot on the clutch. With pressure it should break free.
Eric
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JD 1070 Clutch Replacement
It is stored under cover but yes outside. I'm not sure I understand but here goes. I have to start it in gear to move it and then I should bump up against somthing solid with gears engaged in first or somthing and should I be pressing on the clutch pedal or somthing.
Won't the tires just spin or should I have the rear tires against something to catch while I have the drive line engaged and (now I'm getting it) clutch depressed. I don't know why the breaks didn't act to do this.
Also I think the clutch needs replacement. I adjusted it once 6 mths ago and barely had enough room to have grab in gear and also have PTO clutching. It's not true independent. Only one adjustment for both clutching actions. Do you think its metal on metal now and that's why it's frozen?
And finally? If I need a new clutch will a moderately handy person be able to accomplish that on a machine like this?
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JD 1070 Clutch Replacement
There is a clutch stack. I am not sure which clutch plate is next to the flywheel on this tractor. The plate can be rusted to the flywheel or the pressure plate.
It is normally better to have it free before you try to take it apart. If it is rusted a lot it can be difficult to dismantle.
You can search the TP for clutch problems we have talked about this problem before.
The 1070 is not too hard to take apart and replace the clutch. Have you replaced a clutch in a car before? Ideally you need beyond what you need for a car is a flat smooth cement floor and a hydraulic jack on wheels. In some ways it is easier than in a car.
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JD 1070 Clutch Replacement
Definitely sounds like the clutch disk or disks are stuck to the flywheel or pressure plate of both. What you said about bumping it into a something solid with the cluth pedal fully depressed may break the clutch disk free. BEFORE you try this, see if you can gain access to the clutch assembly via an inspection of cover panel and ensure that one of more of the clutch diaphram fingers is not broken or pivot bolt hardware has fallen out. This can cause the same problem. Once you have the clutch broken free, it is best to store the tractor for any length of time with the spacer block holding the clutch pedal slightly depressed so as to hold the clutch disk, flywheel, and pressure plate apart and unlikely to rust together.
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JD 1070 Clutch Replacement
Thanks for all the responses guys, I went up to the woodlot today and tried to break er free. No such luck. I took the farmi winch off, put on the roto-tiller(a nice old kuhn el50 with 3 speed tranny and everthing, I can't help but love that tiller even thought it's rusted to nothing), and tilled the garden under. Still no clutching action. The 1070 has a syncro-mesh trans. . I was able to pop it in and out of gear in rare occurrences but reverse was tough.
Anyway, I guess it's time to get some prices on parts. I'd have no problem with tearing her down but all I have is gravel with an overhead cover. Not a great idea probably. But maybe my only option. I've always worked on her myself, that is, with the JD manuals. I can't really afford to have the professionals do it.
I'll take a look at the manuals for that peek window and try to see what's going on. I won't have time for a few days though; bugs need to be caught and the wind should subside I hope.
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JD 1070 Clutch Replacement
I was talking best (to have a concrete and floor jack). I have seen people use a floor jack on a dirt floor. I guess you could lay down a sheet of plywood or something. You don't really need to move back very far. Make sure the front half is blocked well.
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JD 1070 Clutch Replacement
I priced out the clutch assembly at $1800. Individual parts could quickly go past this amt if you needed much more than clutch discs and disk springs and pressure plates. The tractor is only worth about $13K. How rediculous is that? Anyway, I guess I won't know exactly what the problems are until I take it down. Are there any places that sell JD parts at better than retail prices. I did a web search but got nowhere. I can only imagine how much it would cost to have JD do the job. They wouldn't give me a price to do it. I figured they had a book with hrs to do this kind of figuring like you'd find in the auto industry. Just venting...
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JD 1070 Clutch Replacement
Just a stab in the dark here, but aren't there places that can rebuild clutch disks and pressure plates? You might have nothing to lose by calling around some. Here in Oregon we have a place called Friction Supply that I think does that sort of work.
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JD 1070 Clutch Replacement
$1800 is about right for the clutch assy. part# AM879876 you could probably get about 10% to 15% off of that price from a competitive parts department. If you are going to have to split the tractor, it is usually best to replace as much as you can that is likely to wear or potentially cause problems in the future. You could probably have the clutch assy. refurbished but I would imagine the costs would still not be too much less. Item # 25 is the complete assy.
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JD 1070 Clutch Replacement: Tractor Engine Repair Rebuild -- Tractor Maintenance Discussion Forum
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11-03-2005, 12:45 
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