Installation; Boom Cleanliness Guidelines - JLG 400S Service And Maintenance Manual

Installation

1. Align 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 mount-
ing hardware.
2. Align the platform level cylinder with attach holes in jib
boom pivot weldment. Using a soft head mallet, install
platform level cylinder pin #1 into jib pivot weldment
and secure with mounting hardware.
JIB BOOM PIVOT
2 4
1
PLATFORM
3
LEVEL
CYLINDER
JIB LIFT
CYLINDER
3. Remove cap or plugs from openings of hydraulic lines
and ports and connect hydraulic lines to platform level
cylinder and jib lift cylinder as tagged during removal.
3121671
JIB
7
6
5
MAE17191
SECTION 4 - BOOM & PLATFORM

4.7 BOOM CLEANLINESS GUIDELINES

Following are guidelines for internal boom cleanliness for
machines that are used in excessively dirty environments.
1. JLG recommends use of the JLG Hostile Environment
Package if available to keep internal portions of a boom
cleaner and to help prevent dirt and debris from enter-
ing the boom. This package reduces amount of contam-
ination which can enter the boom but does not
eliminate the need for more frequent inspections and
maintenance when used in these types of environ-
ments.
2. JLG recommends you follow all guidelines for servicing
your equipment in accordance with instructions out-
lined in the JLG Service & Maintenance Manual for your
machine. Periodic maintenance and inspection is vital to
proper operation of the machine. The frequency of ser-
vice and maintenance must be increased as environ-
ment, severity and frequency of usage requires.
3. Debris and foreign matter inside the boom can cause
premature failure of components and should be
removed. Methods to remove debris should always be
done using all applicable safety precautions outlined in
JLG Service & Maintenance Manuals.
4. The first attempt to remove debris from inside the boom
must be to utilize pressurized air to blow debris toward
the nearest exiting point from the boom. Make sure all
debris is removed before operating machine.
5. If pressurized air cannot dislodge debris, then water
with mild solvents applied via a pressure washer can be
used. Again the method is to wash the debris toward the
nearest exiting point from the boom. Make sure all
debris is removed, that no "puddling" of water has
occurred, and boom internal components are dry prior
to operating machine. Make sure you comply with all
federal and local laws for disposing wash water and
debris.
6. If pressurized air or washing does not remove debris,
disassemble boom in accordance to instructions out-
lined in the JLG Service & Maintenance Manual to
remove debris.
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