•Replace Liner - when wire feeding problems occur and other items have been checked.
NOTICE: The variation in cable lengths prevents the interchangeability of liners. Once a liner has been cut for a particular gun, it should not be installed in another gun unless it can meet the liner cutoff length requirement.
Remove gun and cable assembly from machine.
Remove the nozzle according to the instructions in contact tip replacement.
Remove the gas diffuser from the gun tube by unscrewing counterclockwise.
Lay the gun and cable out straight on a flat surface. Loosen the set screw located in the brass connector at the wire feeder end of the cable. Pull the liner out of the cable.
Insert a new untrimmed liner into the connector end of the cable. Be sure the liner bushing is stencilled appropriately for the wire size being used.
Fully seat the liner bushing into the connector. Tighten the set screw on the brass cable connector. At this time, the gas diffuser should not be installed onto the end of the gun tube.
With the gas nozzle and diffuser removed from the gun tube, be sure the cable is straight, and then trim the liner to the length shown in the diagram below. Remove any burrs from the end of the liner.
Screw the gas diffuser onto the end of the gun tube and securely tighten.
Replace the contact tip and nozzle.
Liner trim length for the Magnum 100L gun. (red trigger)
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| Liner trim |
| Brass cable |
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Set screw |
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connector |
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| Gas diffuser | |
Liner assembly | Gas nozzle | |||||||
(Liner bushing to be seated tight | ||||||||
or gasless nozzle | ||||||||
against brass cable connector) | ||||||||
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• Replace internal gun handle parts as necessary.
The gun handle consists of two halves that are held together with a collar on each end. To open up the handle, turn the collars approximately 60 degrees counterclockwise (the same direction as removing a right hand thread) until the collar reaches a stop. Then pull the collar off the gun handle. 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.
COUNTERCLOCKWISE
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