JLG 800A_AJ Operator Manual - Manual (Page 31)

SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
3121209 – JLG Lift – 2-11
2.3 FUNCTION CHECK
Perform a function check of all systems, once the walk-
around inspection is complete, in an area free of overhead
and ground level obstructions.
A MACHINE MALFUNCTION COULD CAUSE DEATH OR SERIOUS
INJURY. IF ANY MALFUNCTIONS OCCUR DURING THE FUNCTION TEST,
DISCONTINUE OPERATION AND CONTACT A QUALIFIED SERVICE
TECHNICIAN TO CORRECT THE MALFUNCTION BEFORE OPERATING
THE MACHINE.
From the Ground Control Station with No Load in
the Platform:
1. Check that all guards protecting the function switches or
locks are in place. Ensure that all function controls and
switches return to the "off" or neutral position when
released.
DO NOT OPERATE IF GUARDS OR LOCKS ARE MISSING OR THE
SWITCHES DO NOT RETURN TO THE "OFF" OR NEUTRAL POSITION
2. Test the tower boom assembly sequencing as follows:
a. Place machine on level ground with the tower boom
assembly in the stowed position. Identify the tower
boom vertical limit switch adjacent to the tower lift
cylinder at the bottom end (rear) of the tower base
boom. Open the left side hood and perform a visual
check that the plunger on the tower boom vertical
limit switch is fully extended. The plunger is shown
fully extended in Figure 2-7.
Figure 2-7. Tower Boom Vertical Limit Switch