TEF20 clutch

[12 bore]

Hi all

I'm hoping someone may be able to help, father in law bought s fergie diesel a while back with a slipping clutch, we have split the tractor this week and replaced with a new clutch kit from local dealer. Put back together push pedal and nothing no resistance so took top off gearbox and steering box off to have a look and the thrust bearing at its furthest point of travel doesn't reach the clutch fingers to release clutch from flywheel. I have tried adjusting it, re split tractor checked everything put back together and still the same I can't see what we are doing wrong. its driving me mad any help greatly appreciated
Cheers

 

[Electronic]

Sounds like the pedal is out of adjustment. Slacken the 11/16" nut & bolt on the end of the pedal and then turn the square section (1 1/16th) on the end of the shaft until you feel the release bearing make contact with the clutch fingers, lift the pedal keeping the shaft stationary and retighten the clamp bolt. You will then need to readjust until you have about 1/4" free play on the pedal, I can't remember the exact measurement.

 

[12 bore]

Thanks for the reply I have done that and the release bearing sits just in front of pedal but when you push clutch pedal down nothing happens it just spins on the shaft. Forgot to mention the engine feels real tight when you spin it and tractor back together but when we re split tractor spins a treat no problem I'm wondering if the new clutch is no good,

 

[agrimax]

Shouldn't the TEF have a release plate fitted to the fingers on the pressure plate that the release bearing presses against? Do you know if you have fitted a 9'' kit or a 10''. Wouldn't be overly knowledgeable about these but wonder if you have a TEA or TED clutch kit which I think may be different to the TEF. Just a thought.

 

[Mur Huwcun]

So the clutch pedel spins on the shaft connected to the clutch fork? Is the shaft not seized? Any chance you've got the clutch plate wrong way around so fingers can not travel?

Where about were the fingers position wise after tightening cover plate?

Any photos?

 

[Mursal]

Did you replace the pressure plate (heavy bit with springs) or just the drive plate?
Or the drive plate you have fitted is to thick
If you cant see anything missing or slipping (pedal linkage on shaft) use the old pressure plate

 

[12 bore]

I'm hoping it is the right kit i ordered it from local Mf dealer and it looks the same as old one, I will check though, we replaced the heavy big bit with springs and the friction plate plus put a new thrust bearing on. When adjusted the fingers are back as far as they go so the thrust bearing should make contact in shortest possible distance and yes there is a release plate on fingers that the thrust bearing connects with. The shaft is not seized because it does move it just seems to either stop just before it connects with pressure plate or at pressure plate and then does not move any further so you cannot disengage drive and if you put all your weight on it the pedal just spins on shaft

 

[Electronic]

All TE clutches have 3 fingers to release, it is just the plates and springs that vary between engines. I think if it was off a different model it would still release ok. If engine is stiff to turn I wonder if something didn't line up right when it went back together?

 

[Mursal]

Would the friction plate be in the wrong way round, I wonder?
Easy done

Reading your original post again, either the original disk is to thick moving the fingers to far away from the bearing. Or the disk is actually breaking near the top and your passing it and pushing on to far, what clearance have you on the pedal before you move it, maybe half inch, 12mm?
Just suggestions, to try and help ............

 

[12 bore]

Thanks for the help everyone, I wondered if something hadn't lined up I must admit but couldn't see how it would of pulled back together if the shaft to gearbox hadn't aligned with the clutch unit when it went back in. I wonder if perhaps the friction plate is either the wrong one for the tractor or we have put it in wrong way round, it's split again now so I think perhaps we will go back to start completely and strip the parts off and put back on again. perhaps it is the friction plate, I'm not sure of the exact amount of clearance But it isn't much before the thrust bearing then moves forward i will go back out to barn and have a measure! Thanks for all the help greatly appreciated

 

[laich]

Is the fork , that actually pushes the thrust bearing , securely attached to the cross shaft, so that the fork moves , when the shaft moves. Did you have the release bearing off? Is it fitted correctly?
Try jamming / tying up the clutch pedal, turn the shaft right round as far as bearing will go, hold shaft in place and get someone to tighten clamping bolt and try the pedal to see what happens. To test clutch is clearing ,without reconnecting everything, put into gear and push the back wheel. Tractor should rock slightly back and forth. Get someone to press clutch pedal, if clutch is clearing, you will be able to move the tractor.

The pedal is not slipping around the cross shaft , is it, when bearing makes contact, rather than actually push the clutch fingers?

 

[12 bore]

Thanks laich for that I will also try that I have turned the cross shaft so thrust bearing just in front of clutch and adjusted pedal on shaft to suit with resistance felt on pedal just below foot peg it then refuses to move unless you put all your weight on it when it then spins on shaft. I'm sure the release bearing on correct as same as it was when I took it off I did wonder if it may just be spinning on shaft and not actually pushing clutch but it is done up real tight and I don't see why it won't move, I will have a Look over weekend if get a chance

 

[Mursal]

Do the fingers on the clutch move at all?
Did some of those pressure plates come with bolts holding them together, you had to takeout?

 

[MrNoo]

Thanks laich for that I will also try that I have turned the cross shaft so thrust bearing just in front of clutch and adjusted pedal on shaft to suit with resistance felt on pedal just below foot peg it then refuses to move unless you put all your weight on it when it then spins on shaft. I'm sure the release bearing on correct as same as it was when I took it off I did wonder if it may just be spinning on shaft and not actually pushing clutch but it is done up real tight and I don't see why it won't move, I will have a Look over weekend if get a chance

Sounds as if the thrust bearing/release bearing is coming up against the pressure plate casing maybe, esp if it is spinning on the cross shaft. Did you change the release bearing? You have changed the pressure plate. I did a Tef last week and it only had 3 fingers on the pressure plate and NO release plate, I have a feeling that this is where the issue lies??? I seem to remember reading on the internet (think it was under "Plough my field" site on restoring a Ferie and they had the same problem)

 

[12 bore]

Oh right, the old pressure plate has just the three fingers and no disc whereas the new pressure plate has a disc mounted in front of the three fingers held on by some clips perhaps I will remove this and see if that gives any joy then

 

[MrNoo]

http://tef20-restoration.blogspot.co.uk/2011/06/tractor-re-connection-re-split-and.html

This was the blog I came across the info and certainly on both my TEA and TEF they just have the 3 fingers, although after doing the clutch (due to oil ingress) on the TEF, I pushed the pedal down and there was nothing, I hadn't adjusted the cross shaft/clutch lever clearance, it should be 1/4" I think or somewhere handy to that.

 

[12 bore]

Thanks for that will definitely remove that plate I reckon it is the problem