Checking Generator Brush Assembly. Miller BIG BLUE 450 DUO CST, BIG BLUE 450 DUO CST (CST 282)

1-1. Checking Generator Brushes

3

2

Replace brushes if damaged or if brush material is at or near minimum length.

Ref 190823

1

4

1-2. Checking Generator Brush Assembly

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Complete Parts List is available at www.MillerWelds.com

8-6.

Checking Generator Brush Assembly

aged or if brush material is at or nea minimum length. Check length from brushholder surface.

1 4 1

3

2 allen_wrench allen_set pliers needlenose knife

Stop engine and let cool.

1 Generator Brush Assembly

2 Minimum Length: 1/4 in. (6.5 mm)

3 New Length: 5/8 in. (16 mm)

Ref 205725

4 Damaged Brush

Mark and disconnect leads at brushholder assembly. Remove assembly. Press on brush to be sure springs compress.

Replace assembly if brushes are damaged or if brush material is at or near minimum length. Check length from brushholder surface.

8-7.

Inspecting And Cleaning Optional Spark Arrestor Muffler

1

3

Complete Parts List is available at www.MillerWelds.com

OM-255 254 Page 1

Stop engine and let cool.

1 Spark Arrestor Muffler

2 Cleanout Plug

Remove plug and remove any dirt covering cleanout hole.

3 Exhaust Pipe

Start engine and run at idle speed to blow out cleanout hole. If nothing blows out of hole, briefly cover end of exhaust pipe with fireproof material.

Stop engine and let cool.

Reinstall cleanout plug.

2

NGO’s tools/ flathead philips head wrench

3/8 in.

crescent wrench

1

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3

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OM-222 Page 1