THEORY OF OPERATION - CONTINUED
ELECTRO-HYDRAULIC SYSTEM - CONTINUED
N OT E
The ride control activation speed of 6.0 mph (9.5 km/h) is the default, and can be changed using ET.
As machine approaches load site, operator decreases machine ground speed. When ground speed falls
below approximately 6.0 mph (9.5 km/h), ride control system shuts off.
N OT E
If the work tool is loaded from an external source (a hopper or another machine), the pressure in the head
end of the lift cylinders will increase. The operator must move the joystick lift control to the RAISE position
or move the joystick tilt control to the TILT BACK position in order to create pressure in the implement
hydraulic system. This will cause the implement pump to charge the accumulator (TM 5-3805-291-10).
No oil will flow from lift cylinders to ride control accumulator while operator loads work tool. This allows
a greater breakout force for loading work tool.
After bucket is filled and operator increases machine ground speed, ride control system functions again.
Pitching motion of bucket is dampened.