Manual Descent System; Manual Swing Override; Machine Safety System Override (Msso) - JLG E450AJ Operation And Safety Manual

5.5

MANUAL DESCENT SYSTEM

The manual descent system is used, in the event of total power fail-
ure, to lower the upper and lower booms using gravity. To operate
the manual descent system, proceed as follows:
1.
Locate manual descent knob on main valve and turn clock-
wise. Install handle into manual descent pump and lower
the Mid and Lower Booms by pumping the handle until they
are completely lowered.
2. Turn manual descent knob counterclockwise and lower the
Upper (or main) Boom by pumping the handle until it is
completely lowered. Return manual descent knob to center
position and stow handle in bracket provided.
5.6

MANUAL SWING OVERRIDE

The manual swing override is used to manually swing boom and
turntable assembly in the event of a total power failure when the
platform is positioned over a structure or obstacle. To operate the
manual swing override, proceed as follows:
1.
Using a 7/8 inch socket and ratchet wrench, locate nut on
swing worm gear on left side of machine.
2. Install wrench on nut and ratchet in the direction desired.
31215012
SECTION 5 - EMERGENCY PROCEDURES
5.7

MACHINE SAFETY SYSTEM OVERRIDE (MSSO)

(IF EQUIPPED)
The Machine Safety System Override (MSSO) is
only to be used to retrieve an operator that is
pinned, trapped, or unable to operate the
machine and function controls are locked out
from the platform due to a platform overload sit-
uation.
NOTE:
If the MSSO functionality is used, a fault code is set in the JLG
Control System which must be reset by a qualified JLG Service
Technician.
NOTE: No functional checks of the MSSO system are necessary. The JLG
Control system will set a Diagnostic Trouble Code if the control
switch is faulty.
To operate the MSSO:
1.
From the ground control console, place the Platform/
Ground Select switch in the Ground position.
2. Pull out the Power/Emergency Stop control.
3. Start the engine.
4. Press and hold the MSSO switch and the control switch for
the desired function.
5-3