10. Troubleshooting
WARNING!
Before troubleshooting, read and understand the
Service and Maintenance Safety on page 35.
Set the machine to a safe condition.
The following table lists some of the problems that you may
encounter and provides possible causes and solutions.
If you encounter a problem that is difficult to solve, even after
reading this information, please contact your local dealer, the
distributor, or Wallenstein Equipment. Before you call, please
have the serial number for your product handy.
To find the serial number on your machine, see Serial Number
Location on page 5.
For engine troubleshooting, see the engine manufacturer's
manual.
Problem Possible cause Solution
The rotor does not turn. The discharge chute is obstructed. Clear debris from the discharge chute.
The rotor is plugged. Inspect and clear the chipper infeed hopper, lower rotor housing,
and rotor.
The clutch is seized. Replace the clutch.
The drive belt is loose or broken. Set the tension or replace the drive belt.
Material is moving into
the machine too slowly.
The engine or rotor speed is too low. Make sure choke is off. Set throttle to increase rotor rpm.
The rotor knives, ledger knife, or shredder
knives are dull.
Rotate, sharpen, or replace the knives, as required.
The ledger knife clearance is incorrect. Set the ledger knife clearance.
A rotor knife edge angle is incorrect. Sharpen the two rotor knives to the specified 45° angle and make
sure that the knives are installed correctly.
The discharge chute is obstructed. Clear debris from the discharge chute.
There is unusual machine
vibration during operation.
A rotor knife is broken or missing. Check the rotor knives. Rotate, sharpen, or replace the knives, as
required.
The rotor may be bent. Check the rotor rotation to see if there is wobble. If the rotor
wobbles, replace the rotor.
The rotor bearings failed. Replace the rotor bearings.
Fasteners are loose. Use a calibrated torque wrench to tighten the fasteners to the
specified torque. For specifications, see Bolt Torque on page
48.
The mulch is too course. The chop block or twig breaker may be
damaged.
Inspect the chop block and twig breaker. If there is damage,
replace the component.
One or more shredder knives are broken or
missing.
Check the shredder knives. Sharpen or replace the knives, as
required.
Shredder knives are installed incorrectly. Check the shredder knife installation. Correct the installation, as
required.
The machine requires
excessive power or the
engine stalls.
The discharge chute is obstructed. Clear debris from the discharge chute.
The operator is feeding in too much material. Feed smaller amounts of material into chipper and/or shredder
hoppers.
The operator is feeding material in too quickly. Feed larger material slowly into the chipper hopper.
The rotor is plugged. Inspect and clear the chipper infeed hopper, lower rotor housing,
and rotor.
Green material does not discharge. Wait for the material to dry or alternate between placing dry and
wet material in the machine.
The ledger knife clearance is incorrect (too
large).
Set the ledger knife clearance.
The rotor knives, ledger knife, or shredder
knives are dull.
Rotate, sharpen, or replace the knives, as required.
Troubleshooting
BXMT3213
Trailer Chipper / Shredder
46
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