Nobili TB 151, Operator'S Manual

Page: 49 / 100

Maintenance and storage
47
TB 151/181/211
Shredders
Replacing knives and pallet knives
From the transport position:
Uncouple PTO shaft on machine side.
- Partial replacement:
• Replace damaged or worn knives.
• Replace the knives that are diametrically opposite to
maintain the existing balance.
• Check that there is still 1 to 2 mm (0.04’’ -
0.08’’) mm play between the pair of knives and the
supports.
- Total replacement:
• Weigh cutting tools.
• Pair up equally weighted cutting tools so that they
can be placed diametrically opposite.
• Fit the knives according to the direction of travel of
the machine.
• Check that there is still 1 to 2 mm (0.04’’ -
0.08’’) mm play between the pair of knives and the
supports.
- Checking the balance:
• Couple PTO shaft on machine side.
• Slightly lift the machine from the ground.
• Start the PTO drive and increase speed
progressively up to a steady speed of 540 min
-1
.
• When mounted correctly, the rotor must rotate
without causing the machine to vibrate.
Immediately replace worn or damaged parts
with genuine NOBILI parts.
Replace self-locking nuts after each removal
operation:
Torque: 10.5 daN m (77.4 lbf ft).
Put the lighter pairs in the center of the rotor and
the heavier pairs to the edges.
T L 21