TRANSMISSION CLUTCH CALIBRATION
Power Command Transmission
The Power Command transmission has a number of
clutch packs requiring periodic calibration to
compensate for wear. Calibration of the clutches
should be performed at the 50 Hour Service and
thereafter only if a deterioration in gear shift quality
NOTE: During the calibration procedure the
electronic management system detects precisely the
point at which the clutches start to engage . The
engagement is detected by a reduction in engine
speed. During calibration it is essential that no action
is taken to to cause the engine speed to vary. Be sure
that the air conditioner and all electrical equipment is
Do not operate the steering wheel, footbrakes, PTO
or any hydraulic lever or move the hand or foot
Preparing the Tractor for Calibration
NOTE: The clutches should be adjusted when the
Park the tractor on level ground, away from
obstacles (in case of unexpected tractor movement).
Place the transmission shuttle lever in neutral and
apply the parking brake. Switch off all electrical
equipment and air conditioning if fitted. Lower
hydraulic equipment to the ground, place all remote
levers in neutral and stop the engine.
With the operator in the seat, depress and hold down
the clutch pedal. With key start in the off position
depress and hold both transmission upshift and
downshift buttons, Figure 101. Start the engine and
release the buttons to initiate the calibration mode.
Release the clutch pedal.
NOTE: In ‘automatic calibration sequence’ the seat
switch is constantly monitored, if the operator leaves
the seat the sequence will be stopped.
SECTION 4 – – LUBRICATION AND MAINTENANCE
Error Codes for Power Command
Oil too cold.
Engine RPM too low.
Engine RPM too high.
Shuttle lever not in forward drive position.
Clutch pedal not fully released.
Tractor wheel movement detected.
Hand brake not applied
Operator seat switch not depressed.
Calibration high error.
Calibration low error.
Flywheel torque calibration too low
Flywheel torque calibration too high
FAULT CODE RESOLUTION
NOTE: If you have a fault code associated with a red light flashing and an audible alarm, shut the unit down and call
your dealer for support. For a fault code associated with a yellow amber light, record the code number and use the
Aux Override button to move past this fault code. If the code appears again, contact your dealer for support.
JOYNu – Control handle error
JOYNu appears on the instrument panel. Make sure that the control handles and the auxiliary thumbwheel are in the
neutral position. If JOYNu continues to be displayed contact your dealer for support.
OPRPr – Operator presence error
OPRPr appears on the instrument panel. Make sure that you are sitting in the operator seat, the seat belt is fully
engaged, and the restraint bar (if equipped) is in the down position. If OPRPr continues to be displayed contact your
CRKOn – Hydraulic enable error (EH machines only)
CRKOn appears on the instrument panel. CRKOn indicates the OPERATE button is being pressed while attempting
1000 to 1999 (vehicle errors)
Hydraulic Oil Filter
8 – TROUBLESHOOTING
Open / Short Circuit
Engine State Plausibility
Short Circuit to Power
Configuration Time out
Right Brake Light
Left Brake Light Actuation Open Circuit
Left Brake Light Actuation Short Circuit to
Backup Alarm Activation
Input Voltage Out
Supply Voltage Out