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D-5
MAINTENANCE
D-5
12 Remove any burrs from the end of the liner.
13. Screw the gas diffuser onto the end of the gun tube
and tighten.
NOTE: Be sure the gas diffuser is correct for the liner
being used. (See table and diffuser stencil.)
14. Slightly tighten the set screw in the side of the gas
diffuser against the cable liner using 5/64" (2.0mm)
Allen wrench.
This screw should only be gently tightened. Over
tightening will split or collapse the liner and cause
poor wire feeding.
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GUN HANDLE DISASSEMBLY
The internal parts of the gun handle may be inspected
or serviced if necessary.
The gun handle consists of two halves that are held
together with a collar on each end.
To open up the handle:
1. Turn the collars approximately 60 degrees coun-
terclockwise (the same direction as removing a
right hand thread) until the collar reaches a stop.
2. Pull the collar off the gun handle.
NOTE: If the collars are difficult to turn, position the
gun handle against a corner, place a screwdriver
against the tab on the collar and give the screwdriver a
sharp blow to turn the collar past an internal locking rib.
See Figure D.3.
FIGURE D.3 - Gun Handle disassembly.
WIRE-MATIC 255
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CAUTION
COUNTER-
CLOCKWISE