Pins And Composite Bearing Repair Guidelines; Welding On Jlg Equipment; Do The Following When Welding On Jlg Equipment; Do Not Do The Following When Welding On Jlg Equipment - JLG 600SC Service And Maintenance Manual

SECTION 2 - GENERAL
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 joint during operation.
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 (Clean pin before inspection):
a. Detectable bearing area wear.
b. Flaking, peeling, scoring, or scratches on pin surface.
c. Rusting of pin in bearing area.
4. Re-assembly of pinned joints using filament wound
bearings:
a. Blow out housing using compressed air to remove
all dirt and debris. Bearings and bearing housings
must be free of all contamination.
b. Clean bearings and pins with solvent to remove all
grease and oil.
c. Inspect pin to ensure it is free of burrs, nicks, and
scratches which can damage bearing during instal-
lation and operation.
2-6
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.
• Ground only to structure being welded.
• Unplug all pressure transducers (Refer to Section 6 - JLG
Control System.
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 THESE INSTRUCTIONS MAY RESULT IN COMPO-
NENT DAMAGE (I.E. ELECTRONIC MODULES, SWING BEARING, COLLECTOR
RING, BOOM WIRE ROPES ETC.
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