OohOoh
Hard shifting from 4-5 gears??
I mean there is a software upgrade for that problem.
You're shure it has the upgraded software tested before you change......
And that the upgrade was correctly installed.
I mean that it is version 5 that takes care of that problem.(I have the Volvo work description on my work desk, ill check tomorrow)
And to make it installed correctly u need to do some driving with the grader.
And this upgrade made a change in our 11 trans...
If i am not wrong, the change between 4-5, are changes where the gearbox changes its force to another main gear axle.
Thats the reason for the "harder" change in some of the gears.
(M has the same charateristics..)
But of course this grader might have another, and bigger, change problem in those gears.
Another thing to be aware of is that the changing characteristics is made by the piping/hoses for the clutches.(and software)
The longer and bigger pipes, then u get another change caracteristics.
Even a test hose with gauge will make it shift different..