Hitachi DH 38YE Maintenance and Inspection, Inspecting the drill bits, Maintenance of the motor

Page 19

English

MAINTENANCE AND INSPECTION

WARNING: Be sure to switch power OFF and disconnect the plug from the receptacle during maintenance and inspection.

1.Inspecting the drill bits

Since use of a dull tool will cause motor malfunctioning and degraded efficiency, replace the drill bit with a new one or resharpening without delay when abrasion is noted.

2.Inspecting the mounting screws

Regularly inspect all mounting screws and ensure that they are properly tightened. Should any of the screws be loosened, retighten them immediately.

WARNING: Using this rotary hammer with loosened screws is extremely dangerous.

3.Maintenance of the motor

The motor unit winding is the very “heart” of the power tool. Exercise due care to ensure the winding does not become damaged and/or wet with oil or water.

4.Inspecting the carbon brushes (Fig. 16)

The Motor employs carbon brushes which are consumable parts. When they become worn to or near the “wear limit”, it could result in motor trouble. When an auto-stop carbon brush is equipped, the motor will stop automatically. At that time, replace both carbon brushes with new ones which have the same carbon brush Numbers shown in the figure. In addition, always keep carbon brushes clean and ensure that they slide freely within the brush holders.

CAUTION: Using this rotary hammer with a carbon brush which is worn in excess of the wear limit will damage the motor.

Wear limit
		a	No. of
		a	carbon brush
			carbon brush
	Usual carbon	0.24"	43
	brush	(6 mm)	43
	brush	(6 mm)
No. of carbon brush	Auto-stop	0.28"	73
a	carbon brush	(7 mm)	73
0.67"	carbon brush	(7 mm)
0.67"
(17 mm)

Fig. 16

NOTE: Use HITACHI carbon brush indicated in Fig. 16.

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Contents Rotary Hammer Marteau Rotatif Martillo Giratorio AvertissementContents Important Information Meanings of Signal WordsAlways Wear EYE and EAR Protector Keep Work Area CleanNever Touch Moving Parts Never Operate Without ALL Guards in PlaceUSE Right Tool Remove Adjusting Keys and WrenchesKeep Children Away DON’T Force ToolCarefully Handle Power Tools Check for Live WiresKeep Motor AIR Vent Clean Operate Power Tools AT the Rated VoltageReplacement Parts Important Safety Instructions For USE of the Rotary HammerPolarized Plugs USE of Extension Cord Double Insulation for Safer Operation Name of Parts SpecificationsPage Page Prior to Operation Power sourcePower switch ApplicationsCheck the receptacle How to install dust cover FigHow to install tool Extension cordHow to select rotation-hammering Hammering. Fig HOW to USEHow to drill holes Fig How to chisel or crush FigHow to use stopper Mounting How to bore FigGrease replenishment HOW to Replase GreaseGrease replacement period Dismounting FigInspecting the mounting screws Maintenance and InspectionMaintenance of the motor Inspecting the drill bitsService and Repairs Signification DES Mots D’AVERTISSEMENT Informations ImportantesLire Tout CE Mode D’EMPLOI Utiliser L’OUTIL Correct Considerer L’ENVIRONNEMENT DE L’AIRE DE TravailEloigner LES Enfants NE PAS Forcer L’OUTILManipuler L’OUTIL Correctement Cordons DE Rallonge Pour Utilisation a L’EXTERIEURRester SUR SES Gardes Verifier S’IL Y a DES Pieces EndommageesUtiliser L’OUTIL Motorise a LA Tension Nominale Manipuler L’OUTIL Motorise Avec PrecautionNE PAS Essuyer LES Parties EN Plastique Avec DU Solvant Fiches Polarisees Pieces DE RechangeUtilisation D’UN Cordon DE Rallonge Double Isolation Pour UN Fonctionnement Plus SUR Remarque NOM DES PartiesPage Page Cordon prolongateur Avant L’UTILISATIONSource d’alimentation Interrupteur d’alimentationVérification des conditions d’environnement Comment installer le cache-poussière FigComment installer l’outil UtilisationComment sélectionner rotation-percussion et percussion Fig Comment buriner ou broyer FigUtilisation de la quenouille Montage Comment Utiliser LA CouronnePerçage Fig Plein de graisse Période de remplacementComment Remplacer LA Graisse Démontage FigEntretien du moteur Entretien ET InspectionContrôle du foret de perçage Inspection des vis de montageEntretien ET Reparation Significado DE LAS Palabras DE Señalización Información ImportanteLEA Todas LAS Instrucciones 13. Vístase Adecuadamente Mantenga a LOS Niños AlejadosNo Fuerce LAS Herramientas Utilice LA Herramienta CorrectaCompruebe LAS Piezas Dañadas Quite LAS Llaves DE AjusteUtilice Adecuadamente UN Cable Prolongador EN Exteriores Preste AtenciónUtilice Solamente Piezas DE Reemplazo Genuinas DE Hitachi Mantenga Limpio EL Conducto DE Ventilación DEL MotorManeje CON Cuidado LAS Herramientas Eléctricas No Limpie LAS Partes DE Plástico CON DisolventeEnchufes Polarizados Piezas DE ReemplazoUtilización DE UN Cable Prolongador Aislamiento Doble Para Ofrecer UNA Operación MÁS Segura Especificaciones NomenclaturaNota Page Page Antes DE LA Operación AplicacionesTaladrar orificios Fig Confirme las condiciones del medio ambienteInstalación de la cubierta para polvo Fig Montaje de la herramientaCómo usar el tope Selección de rotación-martilleo y martilleo FigPrecaución Ponga en on el interruptor de alimentación y Modo de taladrar Fig MontajeRellenado de grasa Cambio DE GrasaDesmontaje Fig Período de cambio de grasaMantenimiento de motor Mantenimiento E InspecciónInspeccionar la broca de taladro Inspección de los tornillos de montajeMantenimiento Y Reparación Page Page Page Page Page Page Hitachi Koki Canada Co