Checking Generator Brushes; Battery Replacement - Miller Big Blue 500 Pro Owner's Manual

8-5. Checking Generator Brushes

Replace Damaged Brushes

8-6. Battery Replacement

Larger Battery
Tools Needed:
OM-278739 Page 48
.
Complete Parts List available at www.MillerWelds.com
Minimum Length:
New Length:
1-1/4 in. (32 mm)
Viewed From Top of Unit
5/8 in. (16 mm)
Smaller Battery
!
Stop engine and let cool.
1 Generator Brush
Mark and disconnect leads at brushhold-
er cap. Remove brushes.
Replace brushes if damaged or if brush
material is at or near minimum length.
1
GenBrush1 2018−01 / Ref 190823
!
Stop engine.
1 Battery Locator Bracket
Mounting Holes
Access battery as shown in Section
5-4. Disconnect battery.
Remove J-bolts securing battery
and remove battery.
Battery locator brackets can be
moved to accommodate batteries
of different physical sizes.
Install and secure replacement bat-
tery.
!
Connect negative (−) battery
cable last.
1
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