TM 5-2420-230-10
a. Operating Instructions.
(1)
The hydraulic master switch is used for turning the electrohydraulic circuit ON and OFF.
(2)
When the operator's seat is facing the rear, the backhoe can be controlled using both joysticks, and the loader is
switched OFF. When the operator's seat is turned forward, the loader can be controlled using the right joystick. In
this configuration, the left joystick and the backhoe are switched OFF.
(3)
On the left joystick, the selector button is used to select the operation of backhoe or Front-End Loader (FEL). With
the seat facing forward, this button enables the backhoe to be operated using both joysticks as if the seat was
turned toward the rear of the vehicle. With the seat facing rearward, this button enables the loader to be operated
using the right joystick as if the seat was turned toward the front of the vehicle, while at the same time permitting
operation of the backhoe using the left joystick (backhoe dipper and swing movements only). When the
transmission cutout button is pressed, an audible signal sounds. The transmission cutout switch will only operate
when the hydraulic master switch is on and the RANGE SHIFT switch is set to LOW.
b. Backhoe Mode Switch.
The backhoe control system incorporates a mode switch that allows some joystick functions to be swapped from left to
right. The switch, located on the side console, has three positions: BACKHOE A, BACKHOE B, and CROSS
COUNTRY DRIVING. The functions of each of these positions are shown on a decal on the rear window of the vehicle.
7-3
