Ravenger 1950 Wood Chipper and Shredder
E&OE
© 2019 Michigan USA
19
Blades
If a blade is damaged (cracked etc), replace it. • Ensure that blades are kept in good condition
and correct clearance is maintained - see
Specifications
. • Ensure that all bolts securing the
blades are firmly tightened – check them regularly. • Always handle blades with protective gloves on.
The machine uses 3 blades – 1 fixed blade (
A
) that is bolted to the machine body, and 2 blades (
B
) that
are mounted to a rotating shaft. The blades require regular maintenance.
1. Remove the 2 bolts (
C
) securing the blade shaft access cover (
D
) and remove the cover – this
allows access to the blade shaft so you can rotate the blades.
2.
Using a suitable spanner on the end of the blade
shaft, rotate the shaft as required.
Clearance Checking
The blade clearance should be regularly checked. Incorrect blade
clearance will affect machine performance.
1. Remove the input chute from the machine.
2. Clean away any chippings, dirt etc from the blades.
To check and adjust the blade clearance:
1. Use “feeler” or “thickness” gauges to measure the existing gap (
X
). The gauge must drag a little
when being slid between the blades – this means the measurement is fairly accurate.
2. If the blade requires adjusting, loosen (rotate left) the blade bolts (
E
) just enough to allow the blade
to be moved – do not remove the bolts. Adjust the clearance to within specification (see
Specifications
). If the clearance needs to be reduced, gently move the blade towards the fixed
blade as required. If the clearance needs to be increased, gently move the blade away from the
fixed blade as required.
3. Measure the clearance again and ensure it is within the specified range before tightening the blade
bolts.
Repeat the above procedure for the other blade.
A
B
X
E
D
C
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