Changing The Power Pin - Bernard Clean Air MIG Gun Series Owner's Manual

8-5 Changing the Power Pin

A. Universal Power Pin
1. Remove the liner by following the steps listed in section 8-2
Changing the Liner on page 17.
2. Remove the screw and vacuum hose from rear strain relief and
slide rear strain relief back over power pin. Position control
lead wires as necessary as not to damage them.
3. Use wrenches and rotate power pin in a counterclockwise
direction to remove it from the adaptor block.
4. Thread new power pin into adaptor block and use wrenches in
a clockwise direction to thread power pin into adaptor block.
Torque to 18 ft-lbs (24 Nm).
5. Slide rear strain relief over power pin and locate onto adaptor
block, aligning flats and screw hole.
6. Secure with screw.
7. position control lead wires in cutout on side of strain relief.
8. Close strain relief top and secure with vacuum hose by rotating
clockwise 1/4 turn.
9. Reinstall liner by following the steps listed in section 8-2
Changing the Liner on page 17.
B. Euro Power Pin
1. Remove the liner by following the steps listed in section 8-2
Changing the Liner on page 17. Remove the screw and
vacuum hose from rear strain relief.
2. Disconnect Euro block leads from gun by cutting as close as
possible on both sides of the butt connectors in order to
preserve wire for later re-termination.
3. Slide adaptor nut toward cable, thus exposing the Euro block.
4. Remove Euro block from end fitting using appropriate
wrenches in a counterclockwise rotation.
5. Test lead wires for continuity when trigger is engaged.
6. Slide adaptor nut over cable with internal threads facing
toward rear of the gun.
7. Assemble Euro block into adaptor block in a clockwise rotation
using appropriate wrenches. Torque to 18 ft-lbs (24 Nm).
8. Seat adaptor nut on Euro block. Adaptor nut should rotate
freely.
9. Strip the control leads 1/4" (6.5 mm) and re-terminate with
appropriate butt connectors.
10. Install strain relief and vacuum hose.
11. Reinstall liner by following the steps listed in section 8-2
Changing the Liner on page 17.
Figure 8-I
Figure 8-J
OM-CA-2.3 22