Boom; Swinging The Boom; Raising And Lowering The Main Boom; Telescoping The Main Boom - JLG 400S Operation Manual

4.7

BOOM

A RED TILT WARNING LIGHT IS LOCATED ON THE CONTROL CONSOLE WHICH LIGHTS
WHEN THE CHASSIS IS ON AN EXCESSIVE SLOPE. DO NOT SWING OR RAISE BOOM
ABOVE HORIZONTAL WHEN LIGHT IS LIT.
DO NOT DEPEND ON TILT ALARM AS A LEVEL INDICATOR FOR THE CHASSIS. TILT
ALARM INDICATES CHASSIS IS ON AN EXCESSIVE SLOPE (5 DEGREES OR GREATER).
CHASSIS MUST BE LEVEL BEFORE SWINGING, OR RAISING BOOM ABOVE HORIZONTAL
OR DRIVING WITH THE BOOM ELEVATED.
TO AVOID TIP OVER IF RED TILT WARNING LIGHT LIGHTS WHEN BOOM IS RAISED
ABOVE HORIZONTAL, LOWER PLATFORM TO GROUND LEVEL. THEN REPOSITION
MACHINE SO THAT CHASSIS IS LEVEL BEFORE RAISING BOOM.
TRAVELING WITH BOOM BELOW HORIZONTAL IS PERMITTED ON GRADES AND SIDE
SLOPES SPECIFIED IN THE OPERATING SPECIFICATIONS SECTION OF THIS MANUAL.
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINERY IF ANY CONTROL LEVER OR
TOGGLE SWITCH CONTROLLING PLATFORM MOVEMENT DOES NOT RETURN TO THE
'OFF' OR NEUTRAL POSITION WHEN RELEASED.
3121670
TO AVOID A COLLISION AND INJURY IF PLATFORM DOES NOT STOP WHEN A CONTROL
SWITCH OR LEVER IS RELEASED, REMOVE FOOT FROM FOOTSWITCH OR USE EMER-
GENCY STOP SWITCH TO STOP THE MACHINE.

Swinging the Boom

To swing boom, use Swing control switch to select
Right or Left direction.

Raising and Lowering the Main Boom

To raise or lower the Main Boom, use Main Boom Lift
controller to select UP or DOWN movement.

Telescoping the Main Boom

To extend or retract the main boom, use the Main
Telescope Control Switch to select IN or OUT move-
ment.
– JLG Lift –
SECTION 4 - MACHINE OPERATION
4-11