SRT55D Off-Highway Truck
3-16
Safety, Operation and Maintenance Manual
Controls and Operating
through the disc brake assemblies overheats.
If alarm is activated, reduce downgrade travel
speed. If the trouble persists, stop the machine
and have the fault corrected.
(3) Oil Temperature - Transmission
During normal operation the transmission oil
temperature gauge should read in the green
zone. However, during transmission retarder
operation oil temperature can enter the yellow
' RETARDER ON ' zone but should not enter
the red zone. Do not allow the temperature
to stay at or near the top of the yellow zone
for more than 3 minutes. Reduce downgrade
travel speed to avoid the oil overheating and
possible damage to the transmission.
warning
Great care should be used if applying
the retarder when road surfaces are
slippery. Retarder braking effect will
occur only at the driving axle and
could make truck control difcult.
3.11 Engine
3.11.1 Electronic Foot Pedal
The electronic foot pedal provides an electrical
signal to the engine's fuel control system in
proportion to the degree of pedal actuation.
(see Fig3-12).
Note:
The electronically controlled engine
will override the electronic foot pedal position
until the engine is warmed up to the correct
operating temperature. The engine MUST
be started with foot 'OFF' the electronic foot
pedal.
Fig.3-12
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