JLG 80HX_HX+6 ANSI Operator Manual - Manual (Page 60)

SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL
3-22 – JLG Lift – 3120270
NOTE: When the boom is above horizontal and if either the
ENGINE SPEED, DRIVE SPEED, or WHEEL
MOTOR SPEED are positioned to HIGH, high speed
functions are automatically cut out and the machine
continues to operate at a lower speed.
DO NOT OPERATE MACHINE IF HIGH ENGINE SPEED, HIGH
WHEEL MOTOR SPEED, OR HIGH DRIVE SPEED OPERATE WHEN
BOOM IS ABOVE HORIZONTAL.
10. Engine Speed.
The two position ENGINE SPEED control switch
allows the operator to select higher function speeds
when positioned to HIGH.
11. Wheel Motor Speed.
The two position WHEEL MOTOR SPEED control
switch allows the operator to select high wheel
motor speed when positioned to HIGH. When used
in conjunction with ENGINE SPEED HIGH, it gives
the machine a faster drive speed.
TO AVOID PERSONNEL INJURY OR MACHINE DAMAGE, USE
SLOW FUNCTION SPEED CONTROL WHEN POSITIONING THE
PLATFORM IN CLOSE QUARTERS.
12. Drive Speed.
The two-position DRIVE SPEED control switch
allows the operator to select high pump flow, pro-
viding additional speed to the drive function when
positioned to HIGH.
13. Drive.
The DRIVE controller (proportional controls) or
DRIVE control lever (hydraulic controls) provides
driving either forward or backward when positioned
to FORWARD or REVERSE. The controller is
ramped to allow infinitely variable driving speed
between fast and slow.
14. Platform Level.
The PLATFORM LEVEL control switch allows the
operator to compensate for any difference in the
automatic self-leveling system by positioning the
switch to UP or DOWN.
15. Platform Rotate (If Equipped).
The PLATFORM ROTATE control switch allows
operator to rotate the basket to the left or right when
positioned to the desired direction.
16. Extend-A-Reach (If Equipped).
The EXTEND-A-REACH control switch allows oper-
ator to raise or lower the extend-a-reach, as
required.
17. Choke (If Equipped).
A push-button switch supplies power to the choke
solenoid for cold weather starting.
18. Preheat (If Equipped).
This push-button switch when depressed supplies
power to the diesel engine glow plugs for cold
weather start. See diesel engine operator manual
for instructions.
19. Auxiliary Power.
The AUXILIARY POWER control switch energizes
the electrically operated hydraulic pump, when
actuated. The switch must be held ON for duration
of auxiliary pump use.
The auxiliary pump functions to provide sufficient oil
flow to operate the basic machine system should
the main pump or engine fail. The auxiliary pump
will operator boom lift, telescope and swing.
It should be noted that the functions will operate at
a slower than normal rate because of lower hydrau-
lic flow.
WHEN OPERATING ON AUXILIARY POWER, DO NOT OPERATE
MORE THAN ONE FUNCTION AT THE SAME TIME. SIMULTA-
NEOUS OPERATION CAN OVERLOAD THE AUXILIARY PUMP
MOTOR.