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D-5MAINTENANCED-5

9. Tighten the setscrew on the brass cable GUN HANDLE DISASSEMBLY connector.

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NOTE: Do not install the gas diffuser onto the end of the gun tube at this time.

10.Straighten the cable with the gas nozzle and noz- zle insulator removed from the gun tube.

11.Trim the liner to the length shown in Figure D.2.

FIGURE D.2 — LINER MAINTENANCE.

SET

BRASS CABLE

SCREW

CONNECTOR

1-1/4" (1.25)

(31.8MM)

LINER TRIM

LENGTH

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.

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GAS DIFFUSER

NOZZLE INSULATOR

GAS NOZZLE

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 in. (2.0 mm) Allen wrench.

CAUTION

This screw should only be gently tightened. Over tight- ening will split or collapse the liner and cause poor wire feeding.

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POWER MIG 255

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Lincoln Electric SVM144-B service manual 5MAINTENANCED-5, To open up the handle