© 2020 Genesis Attachments, LLC
Genesis GSD Grapple 21
Welding Ground Clamp
Disconnect all battery ground cables or shut off master battery switch, if equipped. Failure
to do so may cause excavator electrical problems, including permanent damage to on
-
board computer systems.
Connect ground clamp as close as possible to the area being welded without allowing cur
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rent to pass through the pivot group or cylinder pin.
If you are welding on the lower jaw, connect the weld clamp to the lower. If you are welding
on the upper jaw, connect to the upper but not to the power link. If needed, weld a piece of
steel to the area for the grounding clamp and cut the piece off when welding is completed.
Welding Rules
Before you begin:
• Wear an approved respirator
• Grind the area to clean it
• Remove all existing hard-surfacing
•
Preheat area to 350˚ F (177˚ C). Maintain this temperature throughout the procedure. Do not
exceed 450˚ F (232˚ C) interpass temperature.
REMOVE PAINT BEFORE WELDING OR HEATING
Hazardous fumes/dust can be generated when paint is heated by welding, sol-
dering or using a torch. Do all work outside or in a well-ventilated area and dis-
pose of paint and solvent properly. Remove paint before welding or heating.
When sanding or grinding paint, avoid breathing the dust. Wear an approved res-
pirator. If you use solvent or paint stripper, remove stripper with soap and water
before welding. Remove solvent or paint stripper containers and other flammable
material from area. Allow fumes to disperse at least 15 minutes before welding or heating.
During welding:
• Always grind and weld with the grain of the material.
• Peen each weld pass to relieve stress and harden the welds.
• Do not undercut the ends of the welds.
After welding maintenance is complete:
• Cover the area with a heat blanket and allow it to cool slowly, approximately eight hours.
• Do not put the grapple into operation until the welds have been allowed to cool.
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GENERAL WELDING GUIDELINES