Terex TA35, Operation, Safety, Maintenance Manual

Page: 65 / 150

3-31
EST-37 Automatic Shift Transmission
The EST-37 transmission is equipped with an electronic control unit (ECU)
which continually monitors the transmission and shift system electrical
components and warns the operator when a problem develops. It also takes
action to prevent damage to the transmission, and provides the serviceman
with diagnostic capabilities so that problems can be corrected quickly and
easily.
When a fault occurs, a two digit error code will be displayed on the LCD display
on the dash panel. The error code is also recorded in the transmission ECU, and
can be accessed by the serviceman by plugging in a data reader to extract
information relating to the fault. The error code recorded in the ECU memory will
remain until it is erased by a technician.
If a major fault is detected, it is the operators responsibility to shut down the
machine as soon as it is safe to do so. The machine should not be restarted until
the fault has been diagnosed and corrected.
Refer to 'Description of Fault Codes Ergocontrol' table for a list of fault codes and
checks on page 3-36.
The EST-37 transmission control has been designed to provide the driver with
maximum operational flexibility by allowing the choice of automatic or manual
gear selection to optimize vehicle performance under all operating conditions.
The transmission provides six forward gears, three reverse gears and a neutral
position. The gear positions are indicated on the LCD display located on the
dash panel (refer to page 3-34 for details). The transmission will only operate
in the gear selected by the operator in the manual range, or, when the lever
is in the automatic range, shifts will occur automatically between 1st and 6th
gear, depending on operating requirements. The reverse gears 1st through 3rd
are manual mode only.
WARNING
Before any welding is done on a
machine equipped with an
EST-37 shift system, disconnect
battery earth cable, battery
supply cable alternator earth
cables, alternator supply
positive cables, electrical
connections at the ECU and
body hydraulics joystick to
avoid damage to electrical
components. Turn off battery
master switch to isolate the
batteries before disconnecting
any components.
Courtesy of Machine.Market