Timberwolf TW 230HB (Diesel), Instruction Manual

Page: 43 / 62

C190-0302 - Rev 1.0 EN 41/59
6.8 Change Blades
WARNING
SHARPEN BLADES ON A REGULAR BASIS.
FAILURE TO DO SO WILL REDUCE PERFORMANCE,
OVERLOAD THE ENGINE AND BEARINGS, AND
CAUSE MACHINE BREAKDOWN. BLADES MUST NOT
BE SHARPENED BEYOND THE WEAR MARK. FAILURE
TO COMPLY WITH THIS COULD RESULT IN MACHINE
DAMAGE, INJURY OR LOSS OF LIFE.
Wear appropriate gloves for the blade changing operation. Always hold the blades by
the flat edges.
Take care when turning the rotor as fingers may be trapped by the fan paddles,
causing serious injury.
1. Ensure the chipper is in a safe condition. (Refer to Section 6.1 " Safe Maintenance" on
page 35.)
2. Remove the drive belts to allow the rotor to be turned. This also prevents possible
injury due to the engine compression suddenly moving the rotor. (Refer to Section 6.9
"
Adjust Rotor Drive Belt Tension" on page 43.)
3. Remove the two nuts and washers retaining the rotor housing blade access hatch and
remove the hatch (Figure 19).
Figure 19 - Rotor Housing Access Hatch Figure 20 - Locking Bar Inserted
4. Turn rotor to the blade change position.
5. Insert locking bar through rotor housing and rotor (Figure 20).
6. Brush clean the rotor and blade.
7. Using a 24 mm spanner or socket, remove the Nyloc nuts and washers from the blade
retaining bolts.
8. Hold the blade in place and remove the two retaining bolts.
9. Withdraw the blade.
10. The blade may be rotated to use the second edge, or replaced with a new or
sharpened blade.
6 Maintenance Instructions TW 230HB (Diesel)