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Section 7: Troubleshooting
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Troubleshooting
Problem
Cause
Solution
Product self-feeds
slowly or won’t self-
feed at all
Knives are worn
Rotate, sharpen, or replace knives.
See
Tractor power take-off speed is below
540 rpm
Set tractor power take-off speed to 540 rpm.
Knives are not sharpened at a
45
o
angle
Resharpen knives to the proper angle.
See
Plugged rotor and/or discharge chute Clean discharge chute and rotor housing.
See
Clearance between knife and knife
ledger is too large
Readjust ledger. See
Wood Chipper requires
excessive power to
operate, or stalls
Tractor horsepower is too low
Minimum 25 power take-off hp is required when operating
at maximum capacity.
Knives are dull/worn
Rotate, sharpen, or replace knives.
See
Overloading feed chute with product
Load feed chute with less product.
Loading feed chute with oversized
product
Feed only product 3"
(7.6 cm)
in dia or smaller.
Product is too green or wet and sticks
to the internal surfaces.
Feed only dry product or alternate between dry and green
product to help keep internal surfaces clean.
Rotor housing is plugged
Clean rotor housing.
See
Discharge chute is plugged
Clean discharge chute.
See
Clearance between knife and knife
ledger is too large
Readjust ledger. See
Knife ledger is dull/worn
Rotate knife ledger or replace knife ledger.
See
Rotor will not turn
Driveline is not engaged
Engage driveline.
Shear bolt in driveline is broken
Replace shear bolt.
See
V-belts are slipping
Tighten spring take-up idler.
See
V-belts are broken
Replace V-belts.
See
Take-up spring is loose from idler
Re-hook spring to idler & adjust.
Rotor housing is plugged
Clean rotor housing.
See
Wood Chipper is
vibrating excessively
Loose knife
Tighten knife to rotor.
See
Broken or missing knife
Replace broken or missing knives in pairs.
See
Knives don’t weigh the same
Re-sharpen the heaver knife to remove material from it
until both knives are the same.
See
Debris & dirt lodged in rotor
Clean rotor.
See
Bent rotor
Inspect straightness of rotor and rotor shaft. Replace as
rotor and/or rotor shaft if bent.
Driveline Vibrates
Worn Universal Joint
Replace Universal Joint.
Section 7:
Troubleshooting