Milwaukee Rotary Hammer manual Operation

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OPERATION

Electronic Feedback Control Circuit

These hammers have an Electronic Feedback Control Circuit (EFCC) which helps improve the operation and life of the tool.

Feedback Control

The electronic speed control circuit allows the tool to maintain constant speed and torque between no-load and load conditions.

Soft Start

The Soft-Start feature reduces the amount of torque reaction to the tool and the user. This feature gradually increases the motor speed up from zero to the speed set by the speed control dial.

WARNING

To reduce the risk of injury, wear safety goggles or glasses with side shields. Unplug the tool before changing accessories or making adjustments.

Selecting Speed

The speed control dial on these hammers allows the user to adjust the rotating speed (RPM) and the impact rate (BPM) of the tool.

To change the speed, set the speed control dial to the desired setting.

•Lower speeds provide more control when starting holes and reduce 'spalling' on breakthrough. Spalling occurs when pieces of material chip off around the drilled hole on breakthrough. When chiseling in soft or brittle materials, use lower speeds to reduce damage to surrounding areas of the material.

•Higher speeds provide faster penetration when drilling and chiseling in demolition work.

Selecting Action

Cat. No. 5337-20

The cat. no. 5337-20 demolition hammer is for "hammering-only". No rota- tion is available. Only chisels and other "hammering-only" accessories should be used.

Cat. No. 5339-20 (Fig. 3)

The cat. no. 5339-20 demolition hammer is for "hammering-only". No rotation is available. The action selector is used to select the action:

Fig. 3

Hammering Only Chisel Adjustment

1.Hammering only. For use with "hammering only" accessories. Use this setting for chiseling.

2.Chisel adjustment. Use this setting to adjust the angle of the chisel blade in relation to the tool. With a chisel mounted in the tool, twist the chisel to the desired angle. Then, rotate the action selector to the "hammering only" setting for use.

NOTE: To engage the hammering mechanism, maintain pressure on the bit/chisel. When pressure is released, hammering stops.

Cat. No. 5340-20

The cat. no. 5340-20 rotary hammer has "hammering-only" and "hammering with rotation", depending on the type of shank inserted into the tool.

For "hammering-only":Insert a chisel or other "hammering-only" accessory with a 3/4" Hex with 21/32" Round shank into the nose of the tool (see "Inserting Bits and Chisels"). The rotational drive mechanism will run but not engage with the chisel, resulting in "hammering-only" action.

For "hammering with rotation": Insert a drill or coring bit with a spline shank into the nose of the tool (see "Inserting Bits and Chisels"). The rotational drive mechanism engages with the bit, resulting in "hammering

with rotation" action.

Cat. No. 5342-20 (Fig. 4)

Cat. no. 5342-20 rotary hammer has "hammering-only", "hammering with rotation", and "chisel adjustment" settings. The action selector is used to select the action:

Fig. 4

 

Hammering with

Hammering Only

Chisel Adjustment

Rotation

 

 

 

 

 

 

1.Hammering only. For use with "hammering only" accessories. Use this setting for chiseling.

2.Hammering with rotation. Use this setting for drilling holes with drill bits. Do not use "hammering with rotation" when using chisels or other "hammering-only" accessories.

3.Chisel adjustment. Use this setting to adjust the angle of the chisel blade in relation to the tool. With a chisel mounted in the tool, twist the chisel to the desired angle. Then, rotate the action selector to the Hammering only setting for use.

NOTE: To engage the hammering mechanism, maintain pressure on the bit/chisel. When pressure is released, hammering stops.

WARNING

To reduce the risk of injury, when using chisels or other hammer- ing-only accessories in cat. no. 5342-20, the action selector must be set to the "hammering only" position.

Starting and Stopping the Tool

1.To start the tool, pull the trigger.

2.To stop the tool, release the trigger.

Locking the Trigger (Cat. No. 5337-20, 5339-20 only)

The lock button on the demolition hammers holds the trigger in the "On" position for continuous use.

1.To lock the trigger, hold in the lock button while pulling the trigger. Release the trigger.

2.To unlock the trigger, pull the trigger and release. The lock button will pop out.

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Contents Operators Manual Page Service Work Area Safety Power Tool USE and CareElectrical Safety Personal SafetyCat. No Functional DescriptionExtension Cords GroundingInstalling Bits and Chisels Tool AssemblyAdjusting the Spade Side Handle Cat. No -20, 5339-20 only Adjusting the Straight Side HandleOperation If a hammer iron gets stuck Using Rotary Percussion Core BitsCold Hammering Operator ForceTop view Drilling Large Diameter Holes with Core Bits FigCut approximately Deep with a core Bit Drill a hole through WorkMortar Cutting Chisels Seam Tools Pull bit out as farChiseling and Chipping Bushing ToolsAccessories MaintenanceFive Year Tool Limited Warranty Sécurité Individuelle Conserver CES Instructions Sécurité DU Lieu DE TravailSécurité Électrique Utilisation ET Entretien DE L’OUTIL ÉlectriqueNo de cat Description FonctionnelleDirectives pour l’emploi des cordons de rallonge Calibres minimaux recommandés pour les Cordons de rallongeMise À LA Terre Avertissement Cordons DE RallongeMontage DE Loutil Avertissement Installation des ciseaux pour marteauRéglage de la poignée latérale droite Maniement Force de l’utilisateur Martelage unique Réglage du ciseau MentBlocage de la gâchette No de cat -20, 5339-20 uniquement Martelage à froidSi la mèche se coince Martelage uniquementSi le marteau se coince Martelage avec rotationPercer un trou par ’ouvrage Perçage de gros trous avec des trépans carottiers FigCiseau à mortier Vue du hautCisellement et burinage BouchardeAccessoires Avertissement Maintenance AvertissementGarantie Limitée DE L’OUTIL DE Cinq ANS USO Y Cuidado DE LAS Herramientas Eléctricas Guarde Estas Instrucciones Seguridad EN EL Área DE TrabajoSeguridad Eléctrica Seguridad PersonalEspecificaciones Reglas Especificas DE SeguridadDescripcion Funcional Extensiónes Eléctricas Tierra AdvertenciaGuías para el uso de cables de extensión Ajuste del mango lateral recto Ensambaje DE LA Herramienta AdvertenciaOperacion Fuerza requerida del operador Arranque y parada de la herramientaTraba del gatillo Cat. No -20, 5339-20 únicamente Martillado en fríoExtraiga la broca de la herramienta Cinceles con punta Cincelado y corteMartelinas Cinceles para cortar morteroAccesorios Advertencia Mantenimiento AdvertenciaGarantía Limitada DE Cinco Años Sawdust
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