SK597-AT4
Driving
Truck
4-24
SPIERINGS MOBILE CRANES USER MANUAL V 1.2
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4.8.4.
Retarder
For slowing down at high speeds and at long downhill driving, the use of a
retarder
is conveniently.
Use of the retarder reduced wear of the service brake.
The retarder is operated by the right control lever on the steering column (
The lever has five positions:
•
OFF:
Disable Bremsomat (spring returned to 0);
•
0:
Retarder off
(centre position);
•
1:
Approx. 33% of the maximum braking torque;
•
2:
Approx. 66% of the maximum braking torque;
•
3:
Maximum braking torque.
Activating retarder
By moving the right control lever from its centre position to position 1 to 3 (
Picture 4-7, point B)
,
the deceleration of the retarder can be set:
-
Always enable evenly (with short intervals) between the
positions
1, 2
and
3
to build the braking
performance gradually;
-
Disable the
retarder (position 0)
by means of a single operation without short intervals;
-
The final deceleration depends on the vehicle speed.
When the
retarder
is enabled, on the control panel
the symbol
retarder
is active (
):
-
When operating the
retarder (positions 3 to 5)
, the brake lights will illuminate.
If the retarder is enabled, it is not possible to accelerate:
-
First enable the
retarder
by moving the right control lever to its centre position
(0)
.
INFORMATION!
For long downhill driving, the use of position 2 (66% of the maximum braking
torque) of the right control lever is advised.
Picture 4-7