Miller Electric D-75D, D-75S manual Routine Maintenance, Brush Inspection And Replacement

SECTION 7 − MAINTENANCE

7-1. Routine Maintenance

Y Disconnect power before maintaining.

	n = Check	~ = Clean	l = Replace		Reference
Every					Section 5-2,
3					5-3
Months
	l Unreadable Labels	~ Weld Terminals		nl Weld Cable	nl Motor Brush
					Section 5-2,
					5-3
	n 14-Pin Cord	n Gas Hose and Fittings		n Gun Cable
Every					Section 5-7
6
Months	Or
	~ Inside Unit	~ Drive Rolls
7-2. Brush Inspection And Replacement

Y Do not disassemble motor field mag- nets or injury/equipment damage may occur.

1 Motor

2 Brush Cap Remove brush cap.

3 Brush

Replace brush if it becomes chipped or bro- ken, or if less than 1/4 in. (6.4 mm) of brush material remains. 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.

1

3

2

Tools Needed:

137 390-B

OM-228 322 Page 23