A high power PTO with built-in clutch for ZF ASTRONIC automatic gearboxes. Its special 5-bolt gearbox mounting flange allows pumps of greater size to be fitted. The shift is operated by the vehicle's own air pressure system. It is possible to operate the PTO while the vehicle is moving (advisable at engine idling speeds).
Ideal for waste collection trucks and similar, where the PTO is in continuous operation. Various internal ratios are available as options. A further advantage of this PTO is that in many cases it avoids reprogramming the vehicle's central processor, which is responsible for sending the engage/disengage signal to the clutch.
This adjustment is usually necessary when changing the operating conditions of the vehicle from the original factory presets.