•
Overloading the vehicle
•
Using high idle with the vehicle in gear
The UltraShift DM TCU is programmed to prevent
clutch abuse. When the clutch overheats, the follow-
ing alerts take place:
•
The TRANS TEMP light comes on
•
The current gear indicator displays CA
•
A warning tone sounds at one-second intervals
The alerts continue until the clutch cools, the throttle
is released, or the clutch is fully engaged.
System Problem
In the event of a problem, do the following steps.
1.
Note the driving conditions at the time the prob-
lem occurred.
2.
Record the status of the transmission at the time
of the problem (AUTO or MAN mode, gear set-
ting R, N, D, or L, current gear, engine speed,
etc.)
Locked In Gear
If the transmission becomes locked in gear, a dash
(–) will appear on the current gear indicator when the
vehicle is restarted during the reset procedure.
NOTE: If the transmission becomes locked in
gear while the vehicle is moving, increased
braking effort may be required to stop the ve-
hicle.
If the current gear indicator displays a dash during
power-up with the selector switch in neutral, do the
following steps.
1.
Make sure the parking brake is set.
2.
Turn off the ignition and wait at least two min-
utes.
3.
Apply the service brakes.
4.
With the service brakes applied, release the
parking brake.
5.
Make sure the selector switch is in neutral and
turn on the ignition key. Do not attempt to start
the engine at this time.
6.
If necessary to get the transmission to shift into
neutral, release the pressure on the brake pedal
slightly.
7.
Once the UltraShift DM TCU reaches neutral, a
solid N will appear on the current gear indicator
and the vehicle will start. Make sure the service
brakes are applied and the parking brake is set.
If the current gear indicator continues to display a
dash, contact an authorized Freightliner or Eaton ser-
vice facility.
Reset Procedure
Transmission operation can sometimes be restored
by doing the following reset procedure:
1.
Stop the vehicle when it is safe to do so. Set the
parking brake.
2.
Place the selector switch in neutral and turn off
the ignition.
3.
Check all transmission harness connectors.
4.
Wait at least two minutes with the engine shut
down.
5.
Restart the engine.
If the problem continues, contact an authorized
Freightliner or Eaton service facility.
Eaton Fuller AutoShift
Automated Transmissions
Refer to the Eaton website for additional information,
www.roadranger.com.
General Information, AutoShift
RT/RTO Models
Eaton Fuller AutoShift transmissions have 10 or 18
forward speeds and two reverse speeds. The driver
must use the clutch to start and stop the vehicle.
The driver does not need to break torque or increase
or decrease engine speed to synchronize the shift.
The transmission signals the engine controller when
to break torque and the engine controller automati-
cally increases or decreases engine speed. When
engine speed is correct, the transmission engages
the next gear and signals the engine controller to
resume operation.
Automated and Automatic Transmissions
14.10
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