Wallenstein BXT36S, Operator'S Manual

Page: 57 / 72

9.9 Rotor Knife Maintenance
WARNING!
Do not operate the machine with any of the
guards or shields removed. The machine is
shown with guards or shields removed for
illustrative purposes only.
W001
WARNING!
Avoid reaching into the rotor housing. The
rotor and ledger knives are very sharp. If it is
necessary to reach into the rotor housing, set the
machine to a safe condition, wear heavy gloves,
and be very cautious.
W003
There are two offset, evenly-spaced rotor knives attached to
the rotor. There is one ledger knife attached to the bottom of the
chipper hopper.
9.9.1 Replace a Rotor Knife
1. Stop the engine. Wait for the rotor to stop turning.
For instructions, see
Stop the Machine on page 31.
2. Remove the fastener that holds the upper rotor housing
closed. See
Figure 22 on page 35.
3. Open the upper rotor housing.
4. Turn the rotor to access one of the rotor knives.
5. Use the rotor-lock pin to prevent the rotor from turning.
Make sure that the rotor cannot move.
For instructions, see
Engage the Rotor Lock on page 36.
6. Remove the rotor knife fasteners.
7. Carefully, remove the rotor knife.
8. Clean the rotor knife recess.
9. Apply blue 242 thread locker to the threads of each rotor
knife fastener.
10. Put the rotor knife in the recess and align the fastener
holes.
11. Install the rotor knife fasteners. See Figure 44.
12. Use a calibrated torque wrench to torque the fasteners to
45 lbf•ft (63 N•m) .
13. Do steps 4 to 12 again for each rotor knife.
14. Disengage the rotor-lock pin to release the rotor.
Make sure that the rotor can turn freely.
For instructions, see
Disengage the Rotor Lock on page
36.
15. Turn the rotor to check the ledger knife clearance for each
of the rotor knives.
Make sure that the rotor knives do not touch the ledger
knife.
16. Close the upper rotor housing.
17. Install the fastener that holds the upper rotor housing
closed. See
Figure 22 on page 35.
18. Use a calibrated torque wrench to torque the fastener to
80 lbf•ft (110 N•m) .
02266
Figure 44 –
Install a rotor knife
BXT36S
Wood Chipper
Service and Maintenance
57