SRT45 Off-Highway Truck
3-13
Safety, Operation and Maintenance Manual
3.10.3 Parking brake
Pushing the switch in will apply the spring
operated parking brakes within the rear brake
assemblies and the service brakes at all
wheels. The parking brake indicator on the
combination instrument will illuminate when
the control is pushed in. Push the switch at top
to release the brakes.
WARNING
Always apply the parking brake before
leaving the operator's seat.
3.10.4 Emergency brake
Pushing the control switch in an emergency.
To release the brakes, turn the control
clockwise.
Note:
Try to avoid using the control switch.
For normal braking the service brake pedal
should be employed.
3.10.5 Retarder
Refer to Fig3-11, this truck is equipped with
two retarders: the transmission retarder and
the rear disk brake retarder. The handle (2) is
used to control the rear disk brake retarder.
The transmission retarder switch (1) is used to
control the transmission retarder.
Retardation is the term used for applying a
continuous braking force to hold the truck
to a safe steady speed when descending
grades. The retarder may be used anytime
to slow down. If additional braking is required
apply the service brakes. The retarder is not
meant for bringing the machine to a halt, or
for sudden deceleration - the service brakes
should be employed for this purpose.
When the retarder is applied, the ' Retarder
Indicator Light ' on the instrument panel will
illuminate and an orange coloured warning
indicator at the rear of the truck will illuminate
to warn following trucks.
1
2
Fig 3.11
Controls and Operating