nh7040 clutch calibration

Thought id help a chap out who's working with us the clutch is so sharp its nearly impossible to hitch a trailer.
Is it easy or a dealer job? i can remember doing a puma while being spoken through on the phone. Many thanks
 

Not again

Member
Location
Wexford
Tractor transmission has to be warm. Start tractor while pressing the upshift and downshift buttons. If the tractor temperature is correct press the upshift button until CL will be displayed. Press the upshift button again till Dt appears. Press the clutch and push the shuttle lever forward. Release clutch. Press the Auto button. Calibration starts
 

Deerejon

Member
Some of the newer models auto rev to 1200 engine rpm, on calibration start. If it doesn't u need to set hand throttle to 1200rpm. Depends how hard you work it whether you can get the transmission warm enough to calibrate not the first time I've known a square of cardboard in front of the rad to it get it a bit warmer think its about 70 degrees ideally. You may find if its really jerky that one re-calibration isn't enough, do it then work it for half a day/day then do it again. We've had new tractors delivered that dealer hasn't been able to get it warm enough on pdi that u feel like your gonna go through the screen changing gear! When you see "end" come up in the dash or the revs drop back, switch off wait 20 secs then re-start.
 

stuart

Member
Mixed Farmer
Some of the newer models auto rev to 1200 engine rpm, on calibration start. If it doesn't u need to set hand throttle to 1200rpm. Depends how hard you work it whether you can get the transmission warm enough to calibrate not the first time I've known a square of cardboard in front of the rad to it get it a bit warmer think its about 70 degrees ideally. You may find if its really jerky that one re-calibration isn't enough, do it then work it for half day/day then do it again. We've had new tractors delivered that dealer hasn't been able to get it warm enough on pdi that u feel like your gonna go through the screen changing gear! When you see "end" come up in the dash or the revs drop back, switch off wait 20 secs then re-start.

on our tm i was told when cf comes up to switch of but leave key on first notch for 20seconds then restart
 
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Deerejon

Member
on our tm i was told when cf comes up to switch of but leave key on first notch fos 20seconds then restart
Only done it on t6000/t6. and t7000/t7. models with dualcommand, range, power command/sidewinder and autocommand but there bit different. Never done a TM, only newer models which all come up 'end', guessing your Tm runs a range command box? We run 9 nh's changed yearly never had a problem doing it the way the fitter told me. You can do it another way if u bridge 2 terminals with a bit of wire in the diagnostic plug but not advised!
 

stuart

Member
Mixed Farmer
Only done it on t6000/t6. and t7000/t7. models with dualcommand, range, power command/sidewinder and autocommand but there bit different. Never done a TM, only newer models which all come up 'end', guessing your Tm runs a range command box? We run 9 nh's changed yearly never had a problem doing it the way the fitter told me. You can do it another way if u bridge 2 terminals with a bit of wire in the diagnostic plug but not advised!

yes range command 7740 would be more likly the same as a tm than a t6 or t7 ?
 

Blue.

Member
Livestock Farmer
Struggling with calibration on a 5070,CL doesn’t come up,C A and other random letters but no CL ?
Transmission temp of mid 50s maybe it’s not warm enough?

Is it same procedure on the smaller new Hollands?
 

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