Volvo VNL 780 Operator's Manual page 118

108 INSTRUMENTS AND CONTROLS
Transmission-Mounted PTO
The transmission-mounted PTO is clutch dependent, which means that operation can be
regulated by depressing or releasing the clutch pedal. This PTO should NOT be in use
while driving.
Engage the PTO by depressing the clutch pedal and pressing in the bottom part of the switch.
Release the clutch pedal to start the PTO.
One or two PTOs can be run at the same time. Applications change depending on customer
needs and components.
W3005510
Engine-Mounted PTO VN, VHD
The engine should be running at low idle and the vehicle should be stopped or running
at very low speed before engaging power take-off. Engage the PTO by depressing the
locking tab and at the same time, depressing the main part of the switch. The PTO is now in
operation and hydraulic flow can be regulated by the engine speed.