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65
HD-8 SERIES V
O P E R A T I N G I N S T R U C T I O N S
Section 6: Troubleshooting the HD-8
6.1
6.1
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1.
When power is reaching the electronic governor the fuse light should be on. If this light fails to go on,
check the fuse, the battery connections, the wiring harness, and the indicator lamp. If the fuse light is on,
the wiring harness, battery connections, fuse and bulb are functioning correctly.
2.
Verify that there are good ground connections.
3.
Checking the TUB MODE operation of the electronic governor. With the engine and hydraulic systems
at operating temperature, and the tub drive control switch in the forward position, throttle the engine up
to 1800-2000 RPM.
With the mode switch in the tub position, the tub should be rotating. The speed of the tub can be varied by rotating the
tub limit knob. The number of tub speed lights which are lit will vary with the setting of the tub limit knob. If the
number of tub speed lights lit varies as you rotate the tub limit knob and the tub speed varies accordingly, the manual
portion of the controls are functioning correctly. Proceed to step 3. If the manual portion is not working properly,
proceed to trouble shooting table 6.1.
Table 6.1 Troubleshooting the electronic
governor’s engine mode
PROBLEM
CAUSE
REMEDY
1. The tub does not rotate but
the electronic governor and the
manual hydraulic valve are
working properly. There is
pressure to the orbit motor.
1. The tub is binding.
2. There is too much material in tub, or the tub is
overloaded due to wet or tough grinding material.
3. The pressure relief valve in the control valve set
too low or is faulty.
1. Remove the material causing problem.
2. Reduce the amount of material in the tub.
3. Check oil pressure
2. The tub does not rotate, but
the valve is receiving 9 to 12
volts of DC power. There is no
pressure to the orbit motor.
Note: The valve refers to the
valve where you disconnect the
wiring harness. For more
information see "Electronic
governor hardware test" later
in this section.
1. The manual hydraulic valve is not engaged.
2. The valve assembly is dirty or faulty.
3. The solenoid is faulty.
1. Engage the manual hydraulic valve.
2. Clean or replace the valve assembly.
3. Test the solenoid and replace as necessary.
3. The tub does not rotate, and
there is no voltage to the valve.
1. There is no power to the electronic governor.
a The electronic governor is switched off.
b The fuse is blown.
c The tub limit knob is set fully counterclockwise.
2. A wire in the wiring harness is broken.
3. The electronic governor is faulty.
1. a Switch the electronic governor mode switch to
tub.
b Replace the fuse.
c Turn the tub speed knob clockwise.
2. Replace or repair the wiring harness.
3. Replace the electronic governor.
4. The tub runs with the
electronic governor switch off.
Disconnect the wiring harness
at the valve.
A. If the tub stops
B. If the tub keeps turning
1A. The electronic governor is out of adjustment.
2.A The electronic governor is faulty.
1B. The valve override screw is adjusted in too far.
2.B The valve is faulty.
1.A Readjust the electronic governor.
2.A Replace electronic governor.
1.B Adjust the override screw.
2.B Replace the valve.
5. The tub speed can not be
varied with the tub limit knob.
1. Valve override is not adjusted correctly.
2. The valve is stuck.
3. The solenoid is stuck.
4. The electronic governor is faulty.
1. Adjust the override screw.
2. Clean or replace the valve assembly.
3. Test the solenoid and replace as necessary.
4. Replace the electronic governor.
Содержание HD-8 V Series
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