Section 6 − Maintenance & Troubleshooting; Routine Maintenance; Brush Inspection And Replacement - Miller D-74 MPa Plus Swingarc w/Drives Manuel Du Propriétaire

SECTION 6 − MAINTENANCE & TROUBLESHOOTING

6-1. Routine Maintenance

3 Months
Replace
unreadable
labels.
Replace
cracked
parts.
6 Months
Blow out or vacuum
inside. During heavy
service, clean
monthly.

6-2. Brush Inspection And Replacement

3
2
Tools Needed:
Clean and
tighten
weld
terminals.
Check
14-pin cord.
Or
!
Disconnect power
before maintaining.
Repair or
replace
cracked
weld
cable.
Check gas
hose and
fittings.
Clean
drive rolls.
1
1/4 in. (6 mm)
Minimum Length
5/8 in. (16 mm)
New Length
Replace
Damaged
Brushes
.
Maintain more often
during severe conditions.
Check gun
cable.
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.
Ref. 137 390-C / S-0816
OM-254063 Page 21