Code F07011709
Initial diameter of the hole (F) 16,5
Maximum tolerated diameter (F’) 18,5
Initial knife length (L) 100
Minimum acceptable length (L’) 85
Maximum wear «T» of pin «S» 2
L
F
L’
F’
F
L
F’
L’
S T
BLADE TURNING DIRECTION
g.17
g.18
g.19
USE AND MAINTENANCE
ENGLISH
23
- Stop the tractor, remove the ignition key and apply the
parking brake.
- Using appropriate wrenches, proceed in replacing the
blades, as following Instructions:
- Disassemble all worn or damaged knives.
- Couple new knives of the same weight together.
- Fix the pairs of knives of the same weight diametrically
opposite to each other on the support.
- Install the heaviest pairs at the two ends of the rotor
and the lighter pairs in the middle (g.17).
- Once the knives have been replaced, tighten the M 20
screws to a 150 Nm torque value. There must be a 1 to 2
mm oat after xing.
Having terminated the operation, start the tractor, remove
the machine from the stands, lower it to the ground and
turn o the tractor engine.
Fit the driveline back in position, turn on the tractor engine
again, raise the machine suciently to prevent the spinning
knives from touching the ground and progressively increase
the PTO rate until reaching a nominal 540 rpm.
If the knives have been mounted correctly, the rotor should
turn without vibrations.
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