SECTION 5 - EMERGENCY PROCEDURES
5-6
– JLG Lift –
3121773
Using Emergency/Ground Controls from Ground
ENSURE BOOM IS NOT POSITIONED OVER THE OUTRIGGERS OR OVERHEAD
OF PERSONNEL BEFORE LOWERING.
1.
Check that the main power key switch
(item 1)
is
set to the ON
( I )
position.
2.
Be certain emergency stop button
(item 2)
is in the
ON position by turning it clockwise.
3.
Start engine, if not already running
(item 4)
.
4.
At Emergency/Ground Control box, turn mode
selector switch
(item 3)
all the way clockwise and
hold.
5.
Check that the green
(machine stabilized)
indicator
light
(item 5)
on the Emergency/Ground Control
box is on.
6.
Operate the appropriate manual control lever
(item 7 thru 13)
next to it’s control valve under the
cover of the valve distributor. See decal on valve
distributor cover for boom component and direc-
tion to operate lever for desired movement.
7.
When finished, release mode selector switch
(item
3)
back to the neutral position.
8.
Position
(press)
emergency stop switch
(item 1)
to
the OFF position.
Manual Descent with Engine Running but without
Electrical Power
(See Figure 5-2.)
ENSURE BOOM IS NOT POSITIONED OVER THE OUTRIGGERS OR OVERHEAD
OF PERSONNEL BEFORE LOWERING.
1.
Open the Ground Control valve distributor cover.
2.
Locate the RED Enable valve lever (item 6). The
RED Enable valve lever must be held open while
operating any of the other boom control valves on
the valve distributor.
3.
At the ground control valve distributor operate the
boom control valves as needed.
4.
Make boom movements in the following
sequence:
•
fully retract main boom
(item 10, Figure 5-2.)
•
fully lower jib
(item 11, Figure 5-2.)
•
fully lower tower boom
(item 8, Figure 5-2.)
•
fully lower main boom
(item 9, Figure 5-2.)
5.
When emergency operation is complete, return all
control levers to the neutral position and shut
machine down.
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