Valtra T144 Operator's Manual page 206

T series
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3. Operation
IMPORTANT: Make sure that the joint shaft angles are not exceeded.
IMPORTANT: Do not exceed the maximum output durability of the PTO shaft.
Make sure that the length of the PTO drive shaft is correct for the PTO-driven
implements to be used.
The shaft must be able to work at full deflection vertically and horizontally.
IMPORTANT: A shaft that is too long can cause damage.
Attach the PTO-driven implement to the tractor.
IMPORTANT: Attach the implement to the tractor before connecting the
power take-off (PTO) drive shaft between the tractor and the implement.
Otherwise, the implement can start to rotate with the PTO drive shaft.
Install the PTO drive shaft according to the manufacturer's instructions.
Engage the PTO at a low engine speed to protect the PTO.
In freezing weather, ensure that the transmission oil is warm before engaging
the PTO.
Before engaging the PTO in freezing weather:
1
GUID-AC883573-4766-4A5F-B233-74DFDE6B98B8
1. PTO cover
DANGER: When fastening the power take-off (PTO) drive shaft
between the tractor and the implement, check that its guard is
undamaged. Attach the guard to a stationary part of the tractor
frame or implement.
let the engine and transmission oil warm up for a little while at low engine
revs. To speed up the transmission oil warming, adjust the engine speed
to 1 500 rpm and keep the steering wheel turned to the extreme position.
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