JLG 600SC_660SJC Service Manual - Manual (Page 117)

SECTION 4 - BOOM & PLATFORM
3121607 – JLG Lift – 4-15
Assembly
NOTE: For location of components See Section 4-22., Articulating
Jib Boom Components.
1. Align lift cylinder with attach holes in articulating jib
boom. Using a soft head mallet, install cylinder pin #7
into articulating jib boom and secure with mounting
hardware.
2. Align rotator support with attach hole in articulating jib
boom. Using a soft head mallet, install rotator support
pin #6 into articulating jib boom and secure with
mounting hardware.
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. 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. Secure with
mounting hardware.
7. Align slave leveling cylinder with attach holes in articu-
lating jib boom pivot weldment. Using a soft head mal-
let, install slave leveling cylinder pin #1 into articulating
jib boom pivot weldment. Secure with mounting hard-
ware.
4.7 LIMIT SWITCHES AND CAM VALVE ADJUSTMENT
Adjust switches and cam valve as shown in Figure 4-23., Hori-
zontal Limit and Dual Capacity Limit Switches Adjustments
and Figure 4-24., Transport Switch Adjustments - CE Machines
Only.
4.8 BOOM CLEANLINESS GUIDELINES
The following are guidelines for internal boom cleanliness for
machines used in excessively dirty environments.
1. JLG recommends use of JLG Hostile Environment Pack-
age to keep internal portions of a boom cleaner and
help prevent dirt and debris from entering the boom.
This package reduces the amount of contamination
which can enter the boom, but does not eliminate the
need for more frequent inspections and maintenance
when used in these types of environments.
2. JLG recommends you follow all guidelines for servicing
your equipment in accordance with instruction in the
JLG Service & Maintenance Manual for your machine.
Periodic maintenance and inspection is vital to proper
operation of the machine. Frequency of service and
maintenance must be increased as environment, sever-
ity, and frequency of usage requires.
3. Debris and contamination 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
the JLG Operation & Safety Manual and the JLG Service
& Maintenance Manuals.
4. The first attempt to remove debris from inside the boom
must be to utilize pressurized air to blow the debris
toward the nearest exiting point from the boom. Make
sure that all debris is removed before operating the
machine.
5. If pressurized air cannot dislodge debris, then water
with mild solvents applied with a pressure washer can
be used. Wash debris toward the nearest exiting point
from the boom. Make sure all debris is removed, no
“puddling” of water has occurred, and boom internal
components are dry before operating machine. Make
sure you comply with all federal and local laws for dis-
posing of wash water and debris.
6. If pressurized air or washing boom does not dislodge
and remove debris, disassemble boom following
instructions outlined in the JLG Service & Maintenance
Manual to remove debris.