Maintenance
103
Knives
Safety concerning maintenance work on the cutterbar
When working on the cutterbar, the tractor must be stopped and
secured.
This prevents the machine from suddenly starting to rotate.
If the tractor and the PTO shaft have not been connected according to
the instructions serious accidents resulting in torn off limbs can occur.
When working on the cutterbar:
• The tractor engine must be stopped.
• The ignition key must be removed.
• The PTO shaft must be disconnected.
• The tractor hydraulic system should be disconnected.
• The hand brake should be activated.
Check the machine knives on a regular basis
The machine's knives must be regularly inspected.
Worn or damaged knives can unbalance the rotating parts.
Vibrations can cause damage on the machine.
As required
»Maintenance intervals« page 72
The knives are replaced as follows:
> Open the guard around the machine's cutterbar.
> Turn the cutting discs by hand until the damaged knife is in the
position shown.
> Use a suitable tool to remove the bolt.
> Replace the knife.
> Inspect the bolt for wear.
• If the bolts are damaged or worn, they must be changed.
NB
The minimum diameter of the bolt must not be less than 16 mm.
> Mount the knife and bolt.
> Tighten the bolt with a torque wrench to a torque of 95 Nm.
NB
If the machine is fitted with knife quick release*, the same requirement
applies for bolt wear.
* Extra equipment
> »Quick release of knives« page 115
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