9.9 Shredder Knife Maintenance
WARNING!
Never operate a machine with any guards
or shields removed. The machine is shown
here with guards and/or shields removed for
illustrative purposes only.
W001
Monitor the shredder knife performance during operation.
Check the shredder knife sharpness after every 50 hours of
operation.
There are three sets of knives mounted on the shredder rotor.
Each knife has an edge that cuts, chops and mulches. As the
knives pass the chop block, the material is mulched.
Shredder knives can be reversed when dull, or removed and
sharpened. If the knives are damaged or cannot be sharpened,
they should be replaced.
2
1
Figure 40 –
Shredder knives and chop block
1. Shredder knives
2. Chop block
9.9.1 Replace a Shredder Knife
1.
Stop the engine. Wait for the rotor to stop turning.
For instructions, see
2.
Remove the fasteners and open the upper rotor housing.
3.
Turn the rotor to access one of the shredder knives.
4.
Loosen the bolt that holds the set of shredder knives and
spacers to the shredder plate.
5.
Slowly remove the shredder knife bolt.
6.
Remove the spacers and shredder knives.
7.
Reverse, replace, or sharpen the shredder knives.
Sharpen the shredder knives to a 45° angle.
8.
Apply blue 242 thread locker to the shredder knife bolt.
9.
Install the shredder knife bolt through the shredder knives,
spacers, and rotor.
10.
Use a calibrated torque wrench to torque the fasteners to
45 lbf•ft (63 N•m)
.
11.
Repeat steps 4 to 10 for second and third sets of shredder
knives.
12.
Close the upper rotor housing and install the fasteners.
13.
Use a calibrated torque wrench to torque the fasteners
to
19 lbf•ft (25 N•m)
.
1
2
3
Figure 41 –
Shredder Knives
1. Shredder knives
2. Spacers
3. Shredder knife bolt
Service and Maintenance
BXMC3409B / BXMC3409B Bundle
Chipper/Shredder
50
Summary of Contents for BXMC3409B
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