Miller Electric AA40GBU - Manual (Page 21)

OM-227 674 Page 17
SECTION 4 − MAINTENANCE AND TROUBLESHOOTING
4-1. Routine Maintenance
Y Disconnect power before maintaining.
n = Check Z = Change ~ = Clean l = Replace
* To be done by Factory Authorized Service Agent
Reference
Every Every
3
M th
l Unreadable Labels ~ Weld Terminals nl Weld Cables l Cracked Parts
Months
n Gun Cable n Gas Hose And Fittings
Every
6
Months Or
~ Inside Of Unit ~ Drive Rolls
4-2. Brush Inspection And Replacement
Ref. 137 390-C / S-0816
1 Motor
2 Brush Cap
Remove brush cap.
3
Brush
Replace brush if it becomes
chipped or broken, or if less than
1/4 in (6.4 mm) of brush material is
left. Do not include spring boss as
part of the 1/4 in measurement.
Install brush so that curved surface
on end of brush matches curve of
motor, and secure with cap.
Repeat procedure for other brush.
Tools Needed:
1
2
3
1/4 in (6 mm)
Minimum Length
5/8 in (16 mm)
New Length
Replace
Damaged
Brushes