SECTION 2 - GENERAL
3121623
– JLG Lift –
2-5
2.5
PINS AND COMPOSITE BEARING REPAIR
GUIDELINES
Filament wound bearings.
1.
Pinned joints should be disassembled and
inspected if the following occurs:
a. Excessive sloppiness in joints.
b. Noise originating from the joint during opera-
tion.
2. Filament wound bearings should be replaced if any
of the following is observed:
a. Frayed or separated fibers on the liner surface.
b. Cracked or damaged liner backing.
c. Bearings that have moved or spun in their
housing.
d. Debris embedded in liner surface.
3. Pins should be replaced if any of the following is
observed (pin should be properly cleaned prior to
inspection):
a. Detectable wear in the bearing area.
b. Flaking, pealing, scoring, or scratches on the
pin surface.
c. Rusting of the pin in the bearing area.
4. Re-assembly of pinned joints using filament wound
bearings.
a. Housing should be blown out to remove all
dirt and debris...bearings and bearing hous-
ings must be free of all contamination.
b. Bearing / pins should be cleaned with a sol-
vent to remove all grease and oil...filament
wound bearing are a dry joint and should not
be lubricated unless otherwise instructed (i.e.
sheave pins).
c. Pins should be inspected to ensure it is free of
burrs, nicks, and scratches which would dam-
age the bearing during installation and opera-
tion.
2.6
WELDING ON JLG EQUIPMENT
NOTE:
This instruction applies to repairs, or modifications to
the machine and to welding performed from the
machine on an external structure, or component,
Do the Following When Welding on JLG Equipment
• Disconnect the battery.
• Disconnect the moment pin connection (where fitted)
• Ground only to structure being welded.
Do NOT Do the Following When Welding on JLG
Equipment
• Ground on frame and weld on any other area than the
chassis.
• Ground on turntable and weld on any other area than the
turntable.
• Ground on the platform/support and weld on any other
area than the platform/support.
• Ground on a specific boom section and weld on any other
area than that specific boom section.
• Allow pins, wear pads, wire ropes, bearings, gearing, seals,
valves, electrical wiring, or hoses to be between the
grounding position and the welded area.
FAILURE TO COMPLY WITH THE ABOVE REQUIREMENTS MAY RESULT IN COM-
PONENT DAMAGE (I.E. ELECTRONIC MODULES, SWING BEARING, COLLECTOR
RING, BOOM WIRE ROPES ETC.)
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