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forward gears 1 or 2 depending on the inclination and
brake at low speeds by applying throttle. When
reversing at higher speeds and engine speeds with the
gear shift lever in R, the retarder and/or the engine
brake gives sufficient braking effect.
Rocking free
On slippery surfaces e.g. snow or sand, the truck can
be rocked free by carefully pressing down and
releasing the accelerator pedal. You then gradually
extend the wheel tracks you have got stuck in.
1
Make sure the differential locks are completely
engaged
2
Move the gear shift lever to M, gear 1
3
Carefully press down the accelerator pedal with
an even pumping action
If you want to rock by quickly changing between
forward and reverse, this can be done at low engine
speeds (less than 1100 rpm) and at a max speed of 5
km/h.
Marshalling
When marshalling, it may be necessary to increase the
engine speed to drive e.g. steering servo and hydraulic
pumps. You can then throttle and brake at the same
time, the engine speed is increased and you can
regulate the speed with the brake pedal. Use the lowest
gear. Make sure the brakes do not overheat.
Idling speed
If the vehicle is to stand still with a gear engaged, the
service brakes or parking brake must be used. To
reduce the driving and the braking power required, the
engine idling speed can be reduced to 550 rpm for
D11. D13 is preset at 500 rpm and cannot be reduced
any lower. For information about how idling speed is
reduced, see "Driver's Manual".
Powertronic 213
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