JLG 800A_AJ Operator Manual - Manual (Page 35)

SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
3121627 – JLG Lift – 2-9
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 MAL-
FUNCTIONS 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 cyl-
inder 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 2-5.
Figure 2-5. Tower Boom Vertical Limit Switch