Volvo FM Handbook page 188

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With "Constant engine speed control" the idle can be
temporarily raised, so that it is higher while the power
take-off is being used. The idling speed can be raised
by different amounts, depending on which type of
power take-off is installed in the truck.
Engine-mounted power take-off
Engine-mounted power take-offs can be engaged or
disengaged while travelling without depressing the
clutch.
On trucks with I-shift it will not be possible to change
gear if the power take-off is engaged while driving.
The desired gear must be selected while the truck is
stationary.
The engine speed is limited when engine-mounted
hydraulic pumps are used.
Clutch-independent PTO
Non clutch-dependent power take-off can be engaged
or disengaged while travelling without depressing the
clutch. Do not switch in the power take-off at engine
speeds exceeding 1200 rpm.
Non clutch-dependent power take-off can be used
during driving and when the gearbox is not engaged.
Non clutch-dependent power take-off can be engaged
or disengaged while travelling without depressing the
clutch. Do not switch in the power take-off at engine
speeds exceeding 1000 rpm.
Driving 177
Note!
Never set the engine speed higher
than the body builder's
recommendation. See information
from the body builder.
J3015780
J3015781
J0008084

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