I think this "need" is dependent on tractor use experience.
Enlighten me, PLEASE !
I cannot jump in the way back machine and spin the dials to go back to 1977, dedicate myself to tractors and pop back tomorrow with an extra 42 years of "experience".
So what can you do for me ?
When ours locked we were using pallet forks to install a piece of equipment.
We had a weight box on the back,
That was lowered, but it is a painted sheet metal box, i.e. as a ground engaging "brake" it is not very effective on soil.
To unload the equipment took two of us and during that time the pallet forks needed to be at about 30 inches off the ground.
The incline is slight, but enough for the tractor to "roll into" the transmission park lock pawl and get STUCK there.
Short of chocking the wheels, rolling into the chocks to "Set" them and THEN engaging the so called "Park" we don't believe we could have done things differently/better.
If that is my missing experience then OK, we might do that in future - lesson learned, etc.
For now I believe that the
M7060 NEEDS a lockable friction parking brake.
JUST LIKE SO MANY TRACTORS HAVE HAD FOR DECADES !
It is what the "Experienced Tractor user Community" is used to, its omission is DANGEROUS for that reason alone.
The shop manual actually SHOWS a hand brake lever on the left side near the wheel arch, it is NOT PRESENT on US machines, which begs the question; Why is it omitted for the US configuration ?
At a guess they figured that there would be more market appeal to a "Park" position similar to automatic transmissions on American cars - most users of which never use the friction parking brake anyway.
BTW, the short vertical rod where the adjustment is done DOES have a lock nut - I will check ours frequently to be sure that it doesn't loosen.