JLG 120HX Operator Manual - Manual (Page 54)

SECTION 4 - MACHINE OPERATION
4-4 – JLG Lift – 3120818
4.8 BOOM
A RED TILT ALARM WARNING LIGHT, LOCATED ON THE CON-
TROL CONSOLE, LIGHTS WHEN THE CHASSIS IS ON A SEVERE
SLOPE (3 DEGREES OR GREATER). DO NOT SWING, EXTEND OR
RAISE BOOM ABOVE HORIZONTAL WHEN LIT.
DO NOT DEPEND ON TILT ALARM AS A LEVEL INDICATOR FOR
THE CHASSIS. TILT ALARM INDICATES CHASSIS IS ON A
SEVERE SLOPE (3 DEGREES OR GREATER). CHASSIS MUST BE
LEVEL BEFORE SWINGING, EXTENDING OR RAISING BOOM
ABOVE HORIZONTAL.
TO AVOID UPSET, IF RED TILT ALARM WARNING LIGHT LIGHTS
WHEN MAIN BOOM IS EXTENDED OR RAISED ABOVE HORIZON-
TAL, RETRACT AND LOWER PLATFORM TO NEAR GROUND
LEVEL. THEN REPOSITION MACHINE SO THAT CHASSIS IS
LEVEL BEFORE EXTENDING OR RAISING BOOM.
TRAVELING WITH BOOM RETRACTED AND BELOW HORIZONTAL
IS PERMITTED ON GRADES AND SIDE SLOPES SPECIFIED ON
SERIAL NUMBER PLATE.
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINERY IF
ANY CONTROL LEVERS OR TOGGLE SWITCHES CONTROLLING
PLATFORM MOVEMENT DO NOT RETURN TO THE OFF OR NEU-
TRAL POSITION WHEN RELEASED.
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 EMERGENCY STOP
TO STOP THE MACHINE.
Swinging the Boom.
ASSURE THAT TURNTABLE LOCK IS DISENGAGED BEFORE
STARTING ANY SWING OPERATION.
Depress footswitch to swing boom, position SWING con-
trol switch or controller to RIGHT or LEFT for direction
desired.
NOTE: When boom functions are being operated there is an
interlock that prevents the use of DRIVE and STEER
functions.
Raising and Lowering the Main Boom
To raise and lower Boom, position LIFT control switch or
controller to UP OR DOWN and hold until desired height is
reached.
Telescoping the Main Boom
To extend or retract Boom, position TELESCOPE control
switch to IN or OUT and hold until platform reaches
desired position.
4.9 SHUT DOWN AND PARK
1. Drive machine to a protected area.
2. Position FUNCTION SPEED control on Platform
Control Console to low.
3. Assure main boom is fully retracted and lowered
over rear (Drive) axle; all access panels and doors
closed and secured.
GRADE
LEVEL
SIDESLOPE
DO NOT DRIVE MACHINE ON GRADES AND SIDESLOPES
EXCEEDING THOSE SPECIFIED ON SERIAL NUMBER PLATE
Figure 4-1. Grade and Side Slope