Service Manual

627333-A 3-7
Transmission and Solenoids
TRANSMISSION CALIBRATION
IMPORTANT: Calibrate the transmission every 1000
hours of operation or annually. Also calibrate
the transmission if shifting problems appear.
Calibration
IMPORTANT: Before starting calibration procedure,
park machine in area open on all sides of
machine. Do not park in front of a building,
vehicle or group of people when performing
this procedure. Never leave operator station
during calibration.
In order to start calibration the transmission oil temp
must be within 60°C to 65°C (140°F to 150°F), the park
brake must be on and the RPM’s must be set at 2100
or above.
FIG. 8:
Calibration can be entered by pressing all three buttons
on the display at the same time for 3 seconds. First
there will appear a radar calibration menu. Exit this
menu by pressing “ESC”, then the transmission
calibration menu will come up to confirm that the
operator wishes to start. To start calibration, select
“YES”. To exit back to normal operation select “NO”.
Once calibration has been started the display will show
the current status of calibration. If calibration cannot be
completed a reason will be displayed, and the display
will revert back to normal operation. If calibration is
successful the display will show a completed status and
resume normal operation.
Calibration Process
During the calibration the TCU will activate one by one
all the solenoids. The TCU adjust the length of stroke
of the solenoids to the point the clutch will be engaged.
Every solenoid can have a different stroke length.
If the length of stroke is not correct, shifting will be very
tough. This will decrease the lifetime of the
transmission.
FIG. 8
Q000031S