I need help with calibrating a friends NH T5060 clutch calibration 12 x 12 gearbox. I have the manual/instructions and the process looks very simple.

"Enter this mode pressing and holding bouth the (h) and (M) switches while starting the engine (shortcut". The display on the cluster apears as follows: The central insturment display, 2 , will briefly show "CAL" follwed, after 2 seconds, by the oil temperature (in degrees Celsius)" and so on.

He called me over to do the proceedure after he had attemped it 100+ times. He thought he was going crazy. I followed the instructions to the "T" and could not get it to enter the calibration mode. I don't get any error messages either.

Thanks for you help.