Doosan D20S-5 Operation & Maintenance Manual page 120

Operation Section Operation Section
Auto Shift Controller ASC-100 (If Equipped) Auto Shift Controller ASC-100 (If Equipped)
Product Description Product Description
The Autoshift controller is an electrical control The Autoshift controller is an electrical control
system, specially designed for use on forklift trucks system, specially designed for use on forklift trucks
with internal combustion engines. with internal combustion engines.
Its primary purpose is to prevent the operator from Its primary purpose is to prevent the operator from
driving the truck outside of the design parameters, driving the truck outside of the design parameters,
e.g. selecting the reverse gear when traveling in e.g. selecting the reverse gear when traveling in
excess of 5.1 km/h ( 3.17 mph) in a forward excess of 5.1 km/h ( 3.17 mph) in a forward
direction, and vice versa. direction, and vice versa.
The Autoshift controller is mounted on a convenient The Autoshift controller is mounted on a
position away from excessive heat sources and the position away from excessive heat sources and the
truck's electrical system is retrofitted. An inductive truck's electrical system is retrofitted. An inductive
speed sensor is mounted on the differential housing speed sensor is mounted on
where it will pick up a pulse from a yoke tooth where it will pick up a pulse from a yoke tooth
pattern. This pulse is used to monitor the truck in pattern. This pulse is used to monitor the truck in
motion and its travel speed. To enable the system motion and its travel speed. To enable the system
to change gears smoothly, the shift points for offset to change gears smoothly, the shift points for offset
speed are adjustable. speed are adjustable.
The Autoshift controller prevents strain and abuse The Autoshift controller prevents strain and abuse
to the transmission. It also prevents damage to the to the transmission. It also prevents damage to the
half shaft, excessive tire wear and heat to the half shaft, excessive tire wear and heat to the
transmission. transmission.
Improper operation or maintenance could result Improper operation or maintenance could result
in injury or death. Do not operate or work on the in injury or death. Do not operate or w
lift truck unless you are properly trained. For lift truck unless you are properly trained. For
safe operation, carefully read and follow this safe operation, carefully read and follow this
Operation and Maintenance Manual. Operation and Maintenance Manual.
convenient
the differential housing
WARNING WARNING
ork on the
-117- -117-
Adjustments Adjustments
(Direction Inhibit Point) (Direction Inhibit Point)
NOTCH NOTCH
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
Direction Inhibit Point Direction Inhibit Point
 
This is accomplished on each machine with a This is accomplished on each machine with a
factory - adjusted controller. factory - adjusted
The SW2 is for adjustment of optimal direction The SW2 is for adjustment of optimal direction
 
inhibit speed. inhibit speed.
Factory - setting value is 5.1 km/h ( 3.17 mph ) Factory - setting value is 5.1 km/h
 
SW1 is not used. SW1 is not used.
 
SW2 SW2
Vehicle Vehicle Speed Speed
3.3 3.3 km/h km/h ( ( 2.05 2.05 mph mph ) )
3.6 km/h 3.6 km/h ( ( 2.24 2.24 mph mph ) )
3.9 km/h 3.9 km/h ( ( 2.42 2.42 mph mph ) )
4.2 4.2 km/h km/h ( ( 2.61 2.61 mph mph ) )
4.5 4.5 km/h km/h ( ( 2.80 2.80 mph mph ) )
4.8 km/h 4.8 km/h ( ( 2.98 2.98 mph mph ) )
5.1 5.1 km/h km/h ( ( 3.17 3.17 mph mph ) )
5.4 5.4 km/h km/h ( ( 3.36 3.36 mph mph ) )
5.7 km/h 5.7 km/h ( ( 3.54 3.54 mph mph ) )
6.0 km/h 6.0 km/h ( ( 3.73 3.73 mph mph ) )
controller.
( 3.17 mph )
Adjustment Switch Adjustment Switch