Boom Synchronizing Procedure; Foot Switch Adjustment - JLG E450A Service And Maintenance Manual

3. Align bottom tubes with attach holes in rotator support.
Using a soft head mallet, install rotator support pin #5
into articulating jib boom and secure with mounting
hardware.
4. Align articulating jib boom with attach hole in articulat-
ing jib boom pivot weldment. Using a soft head mallet,
install rotator support pin #4 into articulating jib boom
and secure with mounting hardware.
5. Align bottom tubes with attach holes in articulating jib
boom pivot weldment. Using a soft head mallet, install
rotator support pin #3 into articulating jib boom pivot
weldment and secure with mounting hardware.
6. Align articulating jib boom pivot weldment with attach
holes in fly boom assembly. Using a soft head mallet,
install pivot pin #2 into fly boom assembly and secure
with mounting hardware.
7. Align the slave leveling cylinder with attach holes in
articulating jib boom pivot weldment. Using a soft head
mallet, install slave leveling cylinder pin #1 into articu-
lating jib boom pivot weldment and secure with mount-
ing hardware.
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SECTION 4 - BOOM & PLATFORM

4.9 BOOM SYNCHRONIZING PROCEDURE

NOTE: If the Lower Boom assembly does not fully lower:
1. Remove all personnel from the platform.
2. Pull the red knob located under the main control valve.
3. From Ground Control, activate the lift control switch,
raise Lower Boom 6 ft. (1.8m).
4. After raising Lower Boom, release the red knob.
5. Activate Lower Boom Down, fully lower boom.
6. Repeat step 1 through 5 if necessary.

4.10 FOOT SWITCH ADJUSTMENT

Adjust switch so that functions will operate when pedal is at
center of travel. If switch operates within last 1/4 inch (6.35
mm) of travel, top or bottom, it should be adjusted.
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