What's inside of a Harbor Freight 220V Spot Welder?

[vtsteam]

What's inside a Harbor Freight 240 volt spot welder? Well the switch on mine was starting to act flakey, so I decided to find out.....

    [ You are not allowed to view attachments ]  

End cap left, fixed handle lying on top of main body with switch wires and switch, moveable handle above that. Handle pin partly removed at front.

[vtsteam]

End cap removed:

  [ You are not allowed to view attachments ]  

The cap and back end of transformer windings

  [ You are not allowed to view attachments ]  

The fixed handle and trigger wire running down channel to the switch:

  [ You are not allowed to view attachments ]  

Switch with ring of paper insulator

  [ You are not allowed to view attachments ]  

Switch wiring

  [ You are not allowed to view attachments ]  

Switch construction

  [ You are not allowed to view attachments ]  

Switch contacts

  [ You are not allowed to view attachments ]  

[vtsteam]

The front arms. Upper moveable arm removed. Sits in cast aluminum retainer, attaches to brass contact shell:

  [ You are not allowed to view attachments ]  

The handle pivot showing straight knurl for "press" fit (doesn't work well)

  [ You are not allowed to view attachments ]  

Upper arm contact (brass right) lower arm contact (copper center) and pivot

  [ You are not allowed to view attachments ]  

Upper and lower arm contacts (front view)

  [ You are not allowed to view attachments ]  


  [ You are not allowed to view attachments ]  

Lower contact, showing insulation at bottom

  [ You are not allowed to view attachments ]