JLG 510AJ Service Manual - Manual (Page 35)

SECTION 2 - GENERAL
3121181 – JLG Lift – 2-5
2.4 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 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 bearing area.
b. Flaking, pealing, scoring, or scratches on pin surface.
c. Rusting of the pin in bearing area.
4. Re-assembly of pinned joints using filament wound
bearings.
a. Blow out housing to remove all dirt and debris.
Bearings and bearing housings must be free of all
contamination.
b. Clean bearing and pins with a solvent to remove all
grease and oil. Filament wound bearings are a dry
joint and should not be lubricated.
c. Inspect pins to ensure they are free of burrs, nicks,
and scratches which would damage bearing during
installation and operation.
2.5 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 battery.
• Disconnect 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 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 COMPONENT DAMAGE (I.E. ELECTRONIC
MODULES, SWING BEARING, COLLECTOR RING, BOOM
WIRE ROPES ETC.)