Harbor Freight Tools 55167 operating instructions Trigger Switch Replacement

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5.Remove the Wire Feed Roller (34) and install one with the proper size (.030”) facing up.

6.Reassemble the Roller Bracket (44), Screws (45), and Washers (46). Put the welding wire into the top groove on the Roller, if it is not already in place.

7.Swing the Wire Feed Adjusting Spring (36) down while pressing it forward to latch it over the Tension Adjusting Screw (37). Tighten the Tension Adjusting Screw until the Wire Feed Bearing (35) just touches the wire and then three full turns farther.

8.Turn the Nozzle (3) counterclockwise while pulling to remove. Using the third oval hole on the provided Wrench (43), turn the Contact Tip (2b) counterclockwise and remove it.

9.Install an appropriately sized Contact Tip (2b, 0.9 mm) over the wire and tighten to the Torch with the Wrench (43).

10.Test and adjust the drive tension as explained in steps 12-14 on the previous page.

11.Close the welder’s cover and switch the Welder OFF. Unplug the Welder if it is not to be used at this time.

Trigger Switch Replacement

1.WARNING! Turn the welder OFF and unplug it before proceeding. This procedure should be performed by a qualified technician.

2.Turn the Handle Lock Ring (1d) at the base of the torch handle counterclockwise and slide it down the cable.

3.Pull the Front Handle (1b) down to disengage the pin at its top - see illustration, below left.

4.Pull the Front Handle (1b) away from the Back Handle (1a), exposing the wires and connections - see illustration, below center.

5.Pull the Trigger Switch (1c) out, being careful not to stress or damage the wires. Disconnect the terminals and replace the Switch - see illustration, below right.

Back

Handle

(1a)

Trigger

Switch

(1c)

Front

Handle

(1b)

 

Back

Front

Handle

Handle (1b)

(1a)

Trigger

Switch (1c)

Back

Handle

Trigger (1a)

Switch (1c)

Front

Handle (1b)

SKU 55167

For technical questions, please call 1-800-444-3353;

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Troubleshooting section at end of manual.

 

 

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Contents For technical questions and replacement parts, please call WelderContents Save This Manual SpecificationsGeneral Safety Rules Work AreaTool Use and Care Electrical SafetyPersonal Safety Service Specific Safety RulesPage Inhalation Hazard Welding Produces toxic fumes and gassesGrounded Tools Tools With Three Prong Plugs Plug and OutletSee Figure C, next Double Insulated Tools Tools With Two Prong PlugsProng Plug and Outlet Outlets for 2-Prong Plug See Figure CFigure C Assembly UnpackingInstalling the Wire Reel Wire Feed Roller Bracket Screws 45 Washers Trigger Switch Replacement Operation Before You Start WeldingDo not Switch the Current While Welding Holding The Torch HartC EttingsS eldW Material Thickness Steel Bend at joint Weld Diagnosis Weld PenetrationWeld Not Adhering Properly Inaccurate welding Porosity Crooked/wavy beadExcessive Spatter Maintenance Parts Lists and Diagrams Wiring SchematicPlease Read the Following Carefully Assembly Diagram Page Wire creates a bird’s nest During operation TroubleshootingWire feed motor runs butwire does not feed properly Welding arc not stableFaulty or improperly connected Trigger Switch 1c Power switch 7a does not light when switched onTroubleshooting Internal fuse blownWire Feeds, but arc does not ignite Weak Arc strength