ABB GWT C9 Product Manual page 106

5 Repair
5.8 Replacement of the welding gun arm
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106
Action
To obtain electrical conductivity between
the sleeve and the electrode holder, the
contact surfaces should be lubricated
with contact paste.
Start by clean the contact surfaces with
a clean cloth.
Then clean the contact surface with a
very fine scotch brite wheel or hand pad
to remove any existing oxidation from the
contact surface (marked with red arrows
in the illustration).
Lubricate the contact surface with contact
paste.
Spread the paste evenly over the entire
contact surface using a brush.
Reassemble the electrode holder and
hoses.
Start by routing the water hoses (pos. 2)
through the arm (pos. 3) and push the
electrode holder (pos. 1) back into place,
tighten the screws and nuts loosely (pos.
4).
If the dowel pin (pos. 5) is stuck to the
arm, reassemble it to the new arm.
Lubricate the contact surface on the leaf
shunt and cooling pad with contact paste.
Spread the paste evenly over the entire
contact surface using a brush.
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Product manual - GWT C9
3HAA010198-001 Revision: A