Service Information
Document Title:
Function Group:
Information Type:
Date:
APS
(Automatic
Power
Shift)
420
Service Information
2014/5/29
Profile:
APS (Automatic Power Shift)
Description
L150 and L180 are as standard provided with APS (Automatic Power Shift), which is included in the control unit of the
Contronic system.
2nd gear is the basic gear and the gear in which the machine normally starts when operating with the selector in the
"A" (Automatic) position. During engine braking the accelerator control is fully released and the downshifting / engine
braking button, SW105, is pressed in. Downshifting takes place at the correct moment for the greatest possible engine
braking from 4th via 3rd to 2nd. If 1st gear is required, press in the kick-down button and 1st gear will be engaged, if the
travelling speed is below 10 km/h (6 mph). This takes place regardless of which gear was engaged initially.
Upshifting from 2nd to 3rd reverse takes place at a comparatively high speed. In that way the operator can decide when
upshifting should occur with the aid of the accelerator control.
If the downshifting / engine braking button, SW105, is kept pressed in while accelerating, upshifting is prevented, see also
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Figure 1
Gear shifting, general principle
Description of function of manual gear shifting
Gear shifting
Gear selector control positions 1, 2 and 3 are manual positions, i.e. the operator selects the gear he or she prefers.
Over-speeding protection
During downshifting the control programme always checks that the speed is not too high for the selected gea. In which case
the engaged gear remains engaged until the speed has dropped to within the permissible range.
Kick-down function
Kick-down can only be activated in selector position 2.
1st gear is engaged if the speed is below 10 km/h (6 mph) within 5 seconds from when the kick-down switch is activated. 1st
gear remains engaged for at least 5 seconds, then upshifting to 2nd gear takes place when the gear-shifting point has been
reached. When changing travelling direction, the kick-down function ceases immediately and upshifting to 2nd gear takes
place.
Changing travelling direction
