Doosan D50S-5 Operation & Maintenance Manual page 122

This test is used to verify operation of direction This test is used to verify operation of direction
control lever. control lever.
Operation Section Operation Section
When you want to change the travel direction, When you want to change the travel direction,
you must press down on the service brake pedal you must press down on the service brake pedal
to reduce the travel speed. Be cautious that the to reduce the travel speed. Be cautious that the
lift truck's stopping distance may be longer than lift truck's stopping distance may be longer than
in manual mode because the lift truck continues in manual mode because the lift truck continues
to travel forward regardless of the selection of to travel forward regardless of the selection of
reverse with the direction control lever until the reverse with the direction control lever until the
vehicle speed is sufficiently reduced. vehicle speed is sufficiently reduced.
WARNING WARNING
controller, manual mode(Fail-Safe Mode) is controller, manual mode(Fail-Safe Mode) is
selected as a default for direction inhibit selected as a default for direction inhibit
while automatic mode is selected as a while automatic mode is selected as a
default for two-speed auto shift control. default for two-speed auto shift control.
Automatic mode Automatic mode
Direction Inhibit Direction Inhibit
1. 1. Start the engine with the direction control lever Start the engine with the direction control lever
in NEUTRAL and the parking brake engaged. in NEUTRAL and the parking brake engaged.
2. 2. Press down on the service brake pedal, Press down on the service brake pedal,
disengage the parking brake and move the disengage the parking brake and move the
direction control lever to FORWARD. direction control lever to FORWARD.
NOTE: NOTE: Release the parking brake before using the Release the parking brake before using the
directional control lever. directional control lever.
3. 3. Observe the LED on the Auto Shift Controller. Observe the LED on the Auto Shift Controller.
The LED should indicate "A" while the direction The LED should indicate "A" while the direction
control lever is in FORWARD, NEUTRAL and control lever is in FORWARD, NEUTRAL and
REVERSE. Report Auto Shift as faulty if the REVERSE. Report Auto Shift as faulty if the
LED indicates anything other than "A". LED indicates anything other than "A".
4. 4. Keep the service brake pushed down until ready Keep the service brake pushed down until ready
to move the truck. to move the truck.
5. 5. To change directions of a traveling lift truck To change directions of a traveling lift truck
when the Auto Shift Controller LED displays "A", when the Auto Shift Controller LED displays "A",
shift the direction control lever to the opposite shift the direction control lever to the opposite
direction and wait for the lift truck to change direction and wait for the lift truck to change
direction. direction.
6. 6. If however, your travel speed is higher than the If however, your travel speed is higher than the
pre-selected direction change speed as direction pre-selected direction change speed as direction
inhibit point in the controller, Auto Shift will shift inhibit point in the controller, Auto Shift will shift
the transmission to NEUTRAL until the lift truck's the transmission to NEUTRAL until the lift truck's
travel speed slows to the pre-selected direction travel speed slows to the pre-selected direction
change speed, and then shift the transmission to change speed, and then shift the transmission to
the direction selected. the direction selected.
7. 7. You should be prepared to help slow the lift You should be prepared to help slow the lift
truck to the pre-selected direction change speed truck to the pre-selected direction change speed
by pressing down on the service brake pedal. by pressing down on the service brake pedal.
121 121
Manual Mode (Fail-Safe mode) Manual Mode (Fail-Safe mode)
In case that the controller is broken down or you In case that the controller is broken down or you
don't want to use the functions of the Auto Shift don't want to use the functions of the Auto Shift
Controller, you can select Manual Mode. In Manual Controller, you can select Manual Mode. In Manual
Mode, you can operate your lift truck in the same Mode, you can operate your lift truck in the same
manner as any lift truck without Auto Shift Controller. manner as any lift truck without Auto Shift Controller.
You can select the Manual mode or the Automatic You can select the Manual mode or the Automatic
mode by doing following procedures. mode by doing following procedures.
WARNING WARNING