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31200804
1.1 GENERAL GUIDELINES
•This repair procedure provides repair information for
a specific discrepancy. It is the responsibility of the
entity performing the repairs to determine if the
discrepancy can be corrected by this procedure. This
procedure is for the repair of the boom pivot
weldment only.
1.2 PARTS REQUIRED
SkyTrak Boom Pivot Repair Kit:
P/N 1001141603
Note: * The Self Aligning Bearings P/N 8065641 will be
factory installed in the Boom Pivot Plate Weldment P/N
1001141633.
1.3 WELD REPAIR GUIDELINES
•All welding must be in strict accordance with
EN288-3, EN288-4 or ANSI/AWS D1.1 standards.
•Disconnect the battery of the machine being repaired
prior to welding.
•Ground only to the component being welded. Do not
ground to any adjacent component or allow pins,
wear pads, wire ropes, bearings, gears, seals,
valves, electrical wiring, or hoses to be between the
grounding position and the area to be welded.
1.4 TOOLS & EQUIPMENT REQUIRED
1. Stands and lifting equipment capable of lifting/
supporting the affected components
2. Hand-held power grinder
3. Air carbon-arc equipment
4. Electric welding equipment
5. AWS 70 grade, low hydrogen rod or wire
6. Standard welder tools
7. Standard mechanic tools
8. Paint
1.5 PERSONNEL REQUIRED
1. Qualified JLG Equipment Mechanic
2. Certified Welder
1.6 MODELS AFFECTED
SkyTrak 8042, 10042 & 10054
1.7 BOOM PIVOT WELDMENT REMOVAL
1. Park the machine on a firm, level surface, fully retract
the boom, lower the boom, place the transmission
control lever in (N) NEUTRAL, engage the park brake
and shut the engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and steering wheel, stating that the machine
should not be operated.
3. Open the engine doors. Allow system
fluids to cool.
4. Remove components as required to
facilitate repair.
Note: Refer to Service Manual 31200353,
Section 3.4.1 for detailed boom assembly
removal.
5. Protect any hoses, wires and hydraulic
cylinder rods before preparing or welding
in the frame boom pivot area.
6. Safely support the components to
alleviate pressure or stresses at the
affected repair area(s).
CAUTION
Use all applicable Safety precautions while working
on, around or under any machinery.
P/N Qty Description
1001141633 1 Plate, Boom Pivot
8065641* 2 Bearing, Self Aligning
NOTICE
Failure to comply with the above weld repair guidelines
may result in component damage.
SkyTrak Boom Pivot
Repair Instructions
For Kit 1001141603
A
02/12
31200804
An Oshkosh Corporation Company
