Alpha Tool.Com.HK Limited hsg-125, 225 Cleaning the Commutator, Installing the Carbon Brushes

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2.Remove the old carbon brush and disconnect the wire terminal. If the inside of the holder is filled with dust, clean it before installing the new carbon brush. Upon instal- lation of the new carbon brush, make sure the twisted wire is in the slot and behind wire terminals on the holder (as in Figure 22 right photo).

3.With the carbon brush holder removed, you can check and clean the armature com- mutator. The commutator is the contact points that the carbon brushes ride on when the motor is running.

CLEANING THE COMMUTATOR

Clean and Dirty Commutator

Clean

Figure-23

Dirty

Figure-24

1.The commutator should be clean and shiny. If it is dull and black, you can clean it with a commutator cleaning stone.

2.To clean the commutator, press the commutator cleaning stone against the commutator and rotate the armature by turning the spindle shaft by hand. Continue for a minute or until commutator is clean and shiny.

INSTALLING THE CARBON BRUSHES

Figure-25

2.Reinstall the carbon brush holder into the slot on motor housing. Reconnect the power wire, ensuring that the wire path is correct.

3.After both carbon brushes have been replaced, you can reassemble the rear cover. Make sure the power wires are in the tool to prevent pinching of the wires.

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Contents Alpha High-Speed Angle Grinder Table of Contents Specifications HIGH-SPEED Angle Grinder OverviewAccessories ComponentsAbout the Symbols IntroductionGeneral Safety Rules Electrical SafetyPersonal Safety Work AreaService Tool USE and CareSpecific Safety Rules USE Proper Extension CordsAdditional Precautions for Using HIGH-SPEED Angle Grinder Safety AdviceHOW to Grind HOW to Handle the GrinderMain Connection Switching on and OFFHIGH-SPEED Angle Grinder Operation Switching off Before USEAbout Double Insulation Laws and Regulations of Noise LevelsUsing the Tool Protective Cover InstallationAssembling Spindle Attachments Disassembling Spindle Attachments Checking and Replacing the Carbon Brushes Rear Cover RemovalCarbon Brush Holder Removal Carbon Brush Removal Cleaning the Commutator Installing the Carbon BrushesAlpha HIGH-SPEED Angle Grinder Schematic HSG-125 Alpha HIGH-SPEED Angle Grinder Parts List HSG-125 Only available with the HSG-125 Loaner Program Services and Warranty InformationNeed More Information Warranty Alpha Tool Repair Service Company HeadquartersEC Declaration of Conformity Electric Hand ToolProduct Registration Card Bauer Drive, Oakland, NJ 07436 800-648-7229 Fax
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