Accelerator Control; Slowing And Stopping - Bell B35E 6X6 ADT Operator's Manual

NOTE
The following procedure must be used in
gear shifting:
• Start the engine.
• Apply the service brake.
Forward Selection (Automatic)
• Select D on the gear selector.
• Release the park brake.
• Release the service brake and increase the en-
gine speed.
As the machine speed increases, the transmission
will select (sequentially) the next gear.
With drive D selected, the actual gear will be
displayed on the CDU, if that option is selected.
Reverse Selection
• Select Reverse (R) on the gear selector.
• Release the park brake.
• Release the service brake and increase the en-
gine speed.
Controlled Gear Range
For certain conditions only a limited range of gears
may be required. To select the range of gears
required, proceed as follows:
• Ensure that the park brake is applied.
• Start the engine.
• Apply the service brake.
• Select D on the gear selector.
• Move the gear selector to the highest gear re-
quired (3, 2 or 1).
To select normal driving gear range the control
lever must be moved to the D position.
Down Shifting Or Reverse Inhibitor
Shifting from neutral N to drive D or reverse R is
inhibited when engine speed is above 900 rpm.
Although there is no speed limitation on upshifting,
there is on downshifting and shifts from neutral to
drive or reverse. If a down shift or N to D or R is
selected when engine speed is too high, the TCU
will prevent the shift until neutral is selected or
engine speed or road speed is reduced.
OPERATING INSTRUCTIONS

Accelerator Control

To avoid injury or property damage caused by sudden
movement of the machine, do not make shift from neutral
N to drive D or reverse R while pressing accelerator.
Shifting from neutral to drive or reverse is inhibited
when engine speed is above 900rpm.
RR or 61 will flash in the display window if a shift is
attempted above 900 rpm.
The position of the accelerator pedal influences the
timing at which automatic shifting will occur at fast
engine speeds.
A partially depressed accelerator pedal position will
cause up shifts at slow engine speeds.

Slowing And Stopping

If the transmission is in neutral and the service
brake is not applied, the park brake will
automatically be applied.
During normal operation, machine must be stopped
using the service brakes. If a machine is stopped
for more than a few seconds, the park brake must
be applied.
Retarders
Engine Retarder
The engine retarder system (Engine Valve Brake) is
fully automatic and will be activated when the
accelerator pedal is fully released.
On down hill operation, if engine governed speed is
exceeded, the transmission may up shift to the next
higher gear. This will reduce braking. Apply service
brakes to prevent exceeding engine governed
speed.
Down shifting to a lower gear increases the
effectiveness of the engine braking.
When machine is fully loaded or slope is steep, it
may be desirable to preselect a lower gear before
reaching the slope.
When the engine brake is engaged, the
transmission automatically starts to down shift to a
lower gear. The CDU will display the gear selected.
OPERATION