28
6 INCH CHIPPER
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSES
REMEDY
During chipping
the sensor gives a
solid green light, but
the feed roller runs
intermittently
Rotor RPM sensor is set too far away
Open the shield and check rotor sensor, Gap
should be 1/32" (thickness of a credit card).
Clean face of sensor. Replace if necessary.
Hard to feed chipper,
requires excessive
power to chip
Dull chipper blades
Flip, sharpen, or replace
Obstructed discharge
Use branch or similar object to clear discharge
tube
Improper blade clearance
Set blade/anvil clearance to recommended
distance
Excessive vibration
while running
Dull chipper blades
Flip, sharpen, or replace
Drive system vibration
Check drive belts, bearings, and pulleys for bad
or worn areas. Check for dull chipper blades.
Rotor out of balance
Inspect rotor for damaged or missing chipper
blades, replace if needed
Chipper blade to anvil clearance is
incorrect
Set blade/anvil clearance to recommended
distance
Feed roller operation is
reversed
Wire harness connection at valve is
incorrect
Switch wire harness connection from A to B and
B to A. Green and white wire should connect
to A on valve. Orange and white wires should
connect to B on valve
Hose connection from valve to motor is
incorrect
Ensure that the hoses go from port A on valve
to port A on motor and B to B
Cannot achieve solid
green for forward feed
Drive belts loose or worn
Inspect drive belts, adjust or replace if needed
Engine/Tractor is not achieving full RPM Confirm that engine is achieving full RPM.
Confirm that PTO is 540 RPM.
Knee bar sensor does
not stop feed roller
Knee bar linkage is not free to move
Check knee bar linkage for full range of motion.
Harness connection or sensor failure
Check harness connection. Adjust or replace
sensor.
Feed roller alternates
between forward and
reverse
Hydraulic motor is malfunctioning.
Hydraulic motor needs to be replaced
Feed roller will not
achieve Forward or
Reverse
Forward or Reverse coil on hydraulic
valve is malfunctioning or faulty wiring
Plug wire from the faulty coil, as indicated on
the Diagnostic Screen, into the other coil. Start
chipper, engage belt, and achieve solid green
indicator. Push the button (Forward or Reverse)
for the faulty coil. If the feed roller works
opposite of the intended direction, replace coil
and reconnect wires: Green and white to A
(Forward), Orange and white to B (Reverse). If
the feed roller does not operate in the opposite
direction, look for a fault in the wiring.
Faulty wiring
Check harness for: grounded wire, cut wire, etc.
Trailer sways during
towing
Discharge tube and/or extension tray not
in correct towing position
Before towing the machine, position and
lock the discharge tube to face the opposite
direction of the towing vehicle and raise the
extension tray.
Tire air pressure is not correct
Check tire sidewall for inflation limits