Miller 300940 Owner's Manual - Page 20

Browse online or download pdf Owner's Manual for Welding System Miller 300940. Miller 300940 24 pages.

Print Page
SECTION 7 − MAINTENANCE AND TROUBLESHOOTING

7-1. Routine Maintenance

7-2. Brush Inspection And Replacement

1
Tools Needed:
OM-254238 Page 16
!
Disconnect power before maintaining.
Repair Or
Replace
Cracked
Weld
Cable
3/8 in. (9.5 mm)
Minimum Length
Replace
Damaged
Brushes
3
2
3 Months
Replace
Cracked
Parts
6 Months
Blow Off Motor.
During Heavy
Service,
Clean Monthly
3/4 in. (19 mm)
New Length
Cord
1
Brush Cap
2
Spring Clip
3
Brush
Remove brush cap. Remove spring
clip and brush.
Replace brush if it becomes chipped
or broken, or if less than 3/8 in. (9.5
mm) of brush material is left.
Install brush so curved surface on
end of brush matches curve of motor.
Reinstall spring clip and cap.
Repeat procedure for other brush.
254 540-B / S-0816