TM 5-2420-230-24-1
4. USER INTERFACE
4.1 Shift lever operation
All EGS applications share the principle of selecting direction and gear positions.
Direction is selected by placing the lever in ONE OF THREE DETENTED POSITIONS (Neutral,
Forward or Reverse).
Gear-shifts are made by bringing the lever either in the UPSHIFT POSITION or in the DOWNSHIFT
POSITION. These positions are SPRING RETURNED.
With the EGS, shifts are made RELATIVE to the previous position : the EGS REMEMBERS the
selected gear position and shifts either to a higher gear or to a lower gear.
The EGS display always shows the selected shift lever position, the selected direction, the gear
position and the gear direction.
This operating principle accounts for the flexibility of the EGS system : it makes possible to control any
(electric) powershift transmission with the same shift lever, provided the correct software (a program
for the EGS computer) is installed.
It also facilitates features such as kickdown, automatic powerup in neutral, preset gear selection after
a direction change, etc...
4.1.1 Grip type operation
The FORWARD driving direction is selected by pushing the lever away from the driver (this usually
corresponds with pushing it to the normal driving direction).
The REVERSE driving direction is selected by pulling the lever towards the driver.
NEUTRAL can be selected by placing the lever into its central detented position.
An UPSHIFT is requested by rotating the shift lever counter clockwise.
A DOWNSHIFT is requested by rotating the shift lever clockwise.
view of the shift lever positions of the grip type EGS
EGS user manual. Page 5 of 25
SPICER CLARK-HURTH
Document reference : egsman4.doc
Revision date: 07/04/97
Ten Briele 3, 8200 Brugge, Belgium
Tel: +32/50/402445
Fax: +32/50/402402
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