1999 Scania 124g rigid that won't select gears

bowers340:
Hi,
I have a 1999 Scania 124g rigid that won’t select gears.
The clutch feels normal, but it is not disengaging. If I start the truck in gear it takes off so the clutch is not slipping. There is plenty of clutch fluid.

Would it be the clutch stuck to the flywheel?

Any suggestions? Anyone had this before?

Cheers,
Nick

Usually, if the release bearing fails, or the operating arm gives in, the slave cylinder will go to the full extent of its travel and the clutch pedal will go solid.
It seems more likely that the driven plate is stuck to the flywheel or pressure plate or both.
If you have access to a rigid tow bar and another vehicle, put the bar between both vehicles, then with brakes off and clutch held down push and pull alternately, it doesn’t need to be too violent. If this doesn’t do the trick then I think it will be a gearbox out scenario.