The speed controls are programmed into the engine ECM. If it's not your truck to do this with, the ECM is probably password protected.
You need the Volvo software to do this. It's programmed into the engine ECM.
You have to change the parameters in the engine ECM.
The speed controls are programmed into the engine ECM. The only way to disable them is to have the ECM settings adjusted.
By changing those parameters in the engine ECM.
Questions pertaining to illegal acts are not permitted to be answered on this website. If you're in a country where the speed of your truck is not dictated by law, you simply take it to a dealership, and have them change the speed settings in the ECM.
You take it to a Volvo Dealer and they plug in a laptop and reprogram some parameters on the ECU in the truck.
Like I told the guy who wanted to know this about Sterling trucks, tampering with the governor on a fleet truck will get you fired. OTOH, if you bought the truck and it's still got the governor on it, just take it to the Volvo dealer and have them turn the speed up all the way. I wouldn't remove the governor; the next buyer might want it. But if you turn it up to about 85mph, it will do the same thing as taking it off.
You don't disable it. You get a new one. You can buy aftermarket computers that change the speed limiter. Or you can be cheep and buy one from a totaled police interceptor from the junk yard.
The engine computer is the rev limiter. You would need a devise capable of reprogramming the engine computer.
Questions pertaining to illegal acts are not permitted to be answered on this website. If you're in a country where the speed of your truck is not dictated by law, you simply take it to a dealership, and have them change the speed settings in the ECM.
By changing the parameters in the engine ECM.
It has no governor. Speed is computer controlled.