JLG 150HAX Operator Manual - Manual (Page 49)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3121213 – JLG Lift – 3-13
15. Steer Switch
The STEER control controls operation of the front steer
wheels of the machine. When the steer switch is posi-
tioned to RIGHT or LEFT, the machine will steer to the
corresponding direction.
16. Capacity Indicator
The capacity indicator gauge is located in a box
attached to the left side of the platform control console.
This gauge indicates the maximum platform capacity
allowable at any given boom angle and extension based
on the color stripe visible on top of the fly boom at the
point where the fly boom enters the mid boom.
17. Engine Speed Switch
The two-position ENGINE SPEED control switch allows
the operator to select higher engine speeds when posi-
tioned to HIGH under certain conditions. With the main
boom below horizontal, HIGH ENGINE SPEED will oper-
ate with DRIVE, TOWER TELESCOPE, and TOWER
LIFT. With the main boom above horizontal and the
appropriate function control handle at the end of its
travel, HIGH ENGINE SPEED will operate with TOWER
LIFT and TOWER TELESCOPE.
18. Pump Volume Switch
The two-position PUMP VOLUME control switch allows
the operator to select high pump flow, providing addi-
tional speed to machine functions when positioned to
HIGH. The PUMP VOLUME switch will operate in HIGH
position only when the main boom is below horizontal.
19. Wheel Speed Switch
The two-position WHEEL SPEED control switch allows
the operator to select high wheel motor speed when
positioned to HIGH with the main boom below horizon-
tal.
NOTE: Machine function speeds automatically go into the
CREEP mode when boom is raised above horizontal.
20. Creep Speed Switch
The CREEP speed control switch allows the operator to
select a lower speed for machine functions when posi-
tioned to ON.