TM-5-5420-279-10
4.6.3.7
Continue to independently operate the crane stabilizer leg controls, for the stabilizer
leg with the least extension until the bubble level on the crane leg indicates the crane
is horizontally level and the stabilizer extension green light illuminates.
NOTE
The last operation must be to extend the stabilizer leg; this operation electrically locks the
hydraulic pressure in the stabilizer leg.
4.6.3.8
Move the control lever (1), from stabilizer (A) to crane (B).
CAUTION
Operate the control levers in a smooth and considered manner. The speed of the working
movements is determined by the degree to which the control lever is moved.
When operating the crane heed the symbols on the control levers and ensure the seat lap
belt is securely fastened.
Unfolding the Crane
4.6.4.1
Deploy crane seat and lock into position.
4.6.4.2
The function of the control panel, adjacent to the seat, is to switch the system on and
off and to switch to special functions.
4.6.4.3
Switch on the system using button (1).
NOTE
The crane overload warning lamp (3) will flash once when the crane is switched on, this
indicates that the crane overload safety circuits are operating correctly.
4.6.4.4
The green indicator lamp (2) will light up.
4.6.4.5
If the indicator lamp fails to light up, check whether the EMERGENCY STOP switch
(4) is still engaged. If the switch is engaged, release it by turning it to the right. Press
button (1) again.
4.6.4.6
The red indicator light will flash to show that the safety circuit is functioning correctly.
If the red indicator lamp (3) remains illuminated then this indicates an overload. Press
the EMERGENCY STOP switch (4) to switch off the crane's electrical system.
Investigate the cause of the overload.
