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Author Topic: Deere 440a clutch replacement  (Read 3168 times)

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Offline thenorthman

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Re: Deere 440a clutch replacement
« Reply #20 on: June 04, 2016, 11:53:09 PM »
Throw out bearing looked good, as new or better the the rest.

Well, I got er back together today... and now she won't disengage far enough to shift, in fact it still wants to drag a little bit, adjusted pedal to max and then some, no difference.

So basically I screwed up on the plate adjustment, and have to yard the motor again, start over... Yay... This time I should be able to just drag the motor forward and leave nearly everything connected though should be enough room to tweak the adjuster screws. On the bright side most of the oil and grease is already on me so I should stay a little cleaner this time.

Sometimes I hate my life...

While testing I managed to run over my very favorite water cooler, since the brakes weren't stopping nothing, and stabbing a screw driver into a key hole while being slammed around in the cab is sooo easy and stuff.
well that didn't work

Offline Grandpa

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Re: Deere 440a clutch replacement
« Reply #21 on: June 05, 2016, 06:31:44 AM »
May I suggest you go back and reread snowstorms posts.

Sounds like you have brake issues too, they should kill the engine at idle.

Offline RHP Logging

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Re: Deere 440a clutch replacement
« Reply #22 on: June 05, 2016, 10:14:01 AM »
Sounds like you may need the spacers.  You get everything adjusted out so far and then what when the disc starts to wear?  If the throw is too far over center the pusher can fall behind and under it.  At least on my machine anyway. I learned the hard way.
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Offline treeslayer2003

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Re: Deere 440a clutch replacement
« Reply #23 on: June 05, 2016, 10:52:15 AM »
Matt i never done a deere skidder but i did help do a 3020. the plate we had set up by the dealer.......it still don't make sense to me why they made it so complicated.

Offline bill m

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Re: Deere 440a clutch replacement
« Reply #24 on: June 05, 2016, 11:06:16 AM »
I don't you screwed up on the plate adjustment, I think you need the spacers.
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Offline thenorthman

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Re: Deere 440a clutch replacement
« Reply #25 on: June 05, 2016, 08:36:51 PM »
So since the last clutch barely had any pressure at all, putting spacers is going to help?


Or perhaps I simply screwed up on adjusting the fingers, and have them to far in, so the throw out dogs are running out of throw before doing their job. They are after all, very short, and being that they are turned 20-30 degrees before making contact... that first 20-30 degrees is where most of the travel is going to happen. The throw out bearing only moves about .5 inches, or less, a 1/4 inch adjustment on the fingers is literally only 2 full turns on the adjusters, or about 1/16 on the plate side.

I appreciate the help, I do.
well that didn't work

Offline ohiowoodchuck

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Re: Deere 440a clutch replacement
« Reply #26 on: June 05, 2016, 09:37:39 PM »
The spacers control the wear of the clutch so to speak. The reason it isn't releasing is there isn't enough room for the pressure plate to come off the disc so it will spin. The fingers are just a set height parallel to the flywheel, and disc. The clutches I ran when I use to truck pull, had spacers under the stands, so after so many hooks you took a spacer out to account for wear, if you took them all out it wouldn't release. Which I believe is the problem your having. When I would adjust my fingers I simply used a straight edge on the back of the pressure plate and make them just touch the straight edge. What I gather from reading in the manual and my take is to adjust the clutch for wear should be done on the rod. just trying to share my thoughts and experience with clutches. I've tore up more clutches than Kellogg's has corn flakes.
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Offline thenorthman

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Re: Deere 440a clutch replacement
« Reply #27 on: June 12, 2016, 09:37:37 PM »
Right, so spacers don't exist, never did... called every dealer, parts house, and friend I can think of, this may be a hot rod thing, but its not a deere thing.

That out of the way, the new clutch... is just wrong, slightly bigger in diameter, and the pads are much wider, so its rubbing on the frame of the pressure plate.

Yes I tore it apart today... again... No it wasn't in backwards, no the splines wheren't hitting on the pto drive.

So I stuck the old one back in cause it didn't look as bad I feared when I first tore it apart. After adjusting the pressure plate to a better spec, and dressing the flywheel.

Guess what

It works flawlessly, took 7 tries but at least now its working and I can get back to logging.

The moral of this story, adjustable pressure plates suck...
well that didn't work

Offline thenorthman

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Re: Deere 440a clutch replacement
« Reply #28 on: June 12, 2016, 09:42:28 PM »
P.S. this isn't my first clutch replacement, just first one on this kind of machine

if this where a car I wouldn't have needed to ask any questions, but tractor clutches is weird, all adjustable and stoopid

Knowing what I know now though, about the only thing I'm worried about replacing on the ole girl now is the tranny, everything else is fairly easy to get to... except most of the hydraulic hoses... they are a nightmare...
well that didn't work

Offline snowstorm

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Re: Deere 440a clutch replacement
« Reply #29 on: June 13, 2016, 06:29:58 AM »
spacers dont exist never did. yes they did. find a 440 tech manual from the 80's they are there

Offline thenorthman

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Re: Deere 440a clutch replacement
« Reply #30 on: June 13, 2016, 08:21:35 AM »
That may be, but the Deere dealer never heard of em, and this 440 is an A and was built in the early 70's so no spacers, Napa never heard of em, washington tractor never heard of em.
well that didn't work

Offline ohiowoodchuck

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Re: Deere 440a clutch replacement
« Reply #31 on: June 13, 2016, 12:22:56 PM »
Not to start a argument but my book shows the spacers. I'm glad you got it fixed and working correctly. That's all that matters
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Offline grassfed

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Re: Deere 440a clutch replacement
« Reply #32 on: June 13, 2016, 01:46:45 PM »
I looked on the John Deere parts website and I could not find any spacers in the parts diagram. I did notice that they revised the design at least 3 times and they did list washers that they specified as 5/16 or 3/8. I could not tell if that was thickness or diameter so they could have been spacers and they were part of the revised part numbers. I would suspect that the clearance all comes down the pressure plate design and as long as you can come up with the correct distance adjustment, be it with spacers of adjusting the fingers, the clutch will work the same. Did the adjustment that finally worked fit into any of the numbers that I sent you from my manual? I am sure that I will have to do this eventually on my machine so thanks for keeping us informed.     
Mike

Offline ohiowoodchuck

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Re: Deere 440a clutch replacement
« Reply #33 on: June 13, 2016, 03:15:11 PM »
my books calls them spacers and I was even able to find them aftermarket for 7.24 for a set of six, the new parts breakdown doesn't show them though, probably like grassfed said they have revised the clutch three times since.
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Offline thenorthman

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Re: Deere 440a clutch replacement
« Reply #34 on: June 13, 2016, 09:26:10 PM »
You folks looking at a power shift? cause thats a totally different clutch pack. That takes some warshers, and spacers, and a pile of other easy to loose parts.
well that didn't work

Offline thenorthman

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Re: Deere 440a clutch replacement
« Reply #35 on: June 13, 2016, 09:38:04 PM »
I looked on the John Deere parts website and I could not find any spacers in the parts diagram. I did notice that they revised the design at least 3 times and they did list washers that they specified as 5/16 or 3/8. I could not tell if that was thickness or diameter so they could have been spacers and they were part of the revised part numbers. I would suspect that the clearance all comes down the pressure plate design and as long as you can come up with the correct distance adjustment, be it with spacers of adjusting the fingers, the clutch will work the same. Did the adjustment that finally worked fit into any of the numbers that I sent you from my manual? I am sure that I will have to do this eventually on my machine so thanks for keeping us informed.   

Those numbers where close, in that originally with some adjusting the pedal side, it would have worked (other then the disk rubbing the plate frame bit) and would have allowed plenty of wear before needing adjusting again. but I honestly got a little er upset.. and winged the final try. Also factor in a redressed fly wheel, and a slightly worn disk, so the fingers are probably a little past those specs, by like say .37-.5".  A little on the jack screw is a bunch on the finger, somewheres around .5 turns equals about .125 on the finger, and the screw is fine pitched.

When yer ready its fairly easy, motor don't have to come all the way out even, just remove a couple of short wires, main power from battery, temp wire thing(mechanical), throttle linkage, and maybe one of the clamp bolts for the alternator wiring. On mine at least it allowed the motor to slip forward 4-6 inches, giving access to the adjusting bolts. The cherry picker engine hoist worked for this part, not so much for completely pulling motor (though on flat concrete it would have done the trick).

Oh and nose guard, air cleaner assm,front belly pan, and hood all have to come off, nose guard being the most awckward bit.

For full removal there are a few fuel and hydro hoses that need disconnected but nothing terrible.

Also the RPM drive wire thing will fall out once motor has been removed... mine don't work so its staying out anyway. gauge is wonky.
well that didn't work

Offline ohiowoodchuck

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Re: Deere 440a clutch replacement
« Reply #36 on: June 13, 2016, 11:16:32 PM »
I'm looking at a syncro range clutch set up. My book is a 84 print year.
Education is the best defense against the media.


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