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Hitachi DH 24VB Instruction Manual And Safety Instructions

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INSTRUCTION MANUAL

SAFETY INSTRUCTIONS

ROTARY HAMMER
MODEL DH 24VB
WARNING:
Improper and unsafe use of this power tool can result in
death or serious bodily injury!
This manual contains important information about prod-
uct safety. Please read and understand this manual before
operating the power tool. Please keep this manual avail-
able for others before they use the power tool.
DOUBLE INSULATION
AND
FOR

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Summary of Contents for Hitachi DH 24VB

  • Page 1: Safety Instructions

    INSTRUCTION MANUAL SAFETY INSTRUCTIONS ROTARY HAMMER MODEL DH 24VB WARNING: Improper and unsafe use of this power tool can result in death or serious bodily injury! This manual contains important information about prod- uct safety. Please read and understand this manual before operating the power tool.

  • Page 2: Table Of Contents

    — CONTENTS — Page IMPORTANT INFORMATION ................... 3 MEANINGS OF SIGNAL WORDS ................3 SAFETY INPORTANT SAFETY INSTRUCTIONS FOR USING ALL POWER TOOLS ........... 4 IMPORTANT SAFETY INSTRUCTIONS FOR USE OF THE ROTARY HAMMER ........8 REPLACEMENT PARTS ................... 8 POLARIZED PLUGS ....................

  • Page 3: Important Information

    WARNINGS on the power tool and in this Instruction Manual. Never use this power tool in a manner that has not been specifically recommended by HITACHI, unless you first confirm that the planned use will be safe for you and others.

  • Page 4: Safety

    SAFETY INPORTANT SAFETY INSTRUCTIONS FOR USING ALL POWER TOOLS WARNING: Death or serious bodily injury could result from improper or un- safe use of power tools. To avoid these risks, follow these basic safety instructions: READ ALL INSTRUCTIONS 1. NEVER TOUCH MOVING PARTS. Never place your hands, fingers or other body parts near the tool’s moving parts.
  • Page 5 9. CONSIDER WORK AREA ENVIRONMENT. Don’t expose power tools to rain. Don’t use power tools in damp or wet loca- tions. Keep work area well lit and well ventilated. Don’t use tool in presence of flammable liquids or gases. Power tools produce sparks during operation. They also spark when switch- ing ON/OFF.
  • Page 6 19. REMOVE ADJUSTING KEYS AND WRENCHES. Keys and adjusting wrenches remove from tool before turning it on. 20. OUTDOOR USE EXTENSION CORDS. When tool is used outdoors, use only extension cords intended for use out- doors and so marked. 21. STAY ALERT. Watch what you are doing.
  • Page 7 Wipe plastic parts with a soft cloth lightly dampened with soapy water and dry thoroughly. 35. USE ONLY AUTHENTIC HITACHI REPLACEMENT PARTS. Replacement parts not manufactured by Hitachi may void your warranty and can lead to malfunction and resulting injuries. Authentic Hitachi parts are avail- able from your dealer.

  • Page 8: Important Safety Instructions

    REPLACEMENT PARTS When servicing use only identical replacement parts. Repairs should be conducted only by a Hitachi authorized service center. POLARIZED PLUGS To reduce the risk of electrick shock, this equipment has a polarized plug (one blade is wider than the other).

  • Page 9: Use Of Extension Cord

    USE OF EXTENSION CORD Make sure your extension cord is in good condition. When using an extension cord, be sure to use one heavy enough to carry the current your product will draw. An undersized cord will cause a drop in line voltage resulting in loss of power and overheating.

  • Page 10: Double Insulation For Safer Operation

    DOUBLE INSULATION FOR SAFER OPERATION To ensure safer operation of this power tool, HITACHI has adopted a double insula- tion design. “Double insulation” means that two physically separated insulation systems have been used to insulate the electrically conductive materials connected to the power supply from the outer frame handled by the operator.

  • Page 11: Operation And Maintenance

    OPERATION AND MAINTENANCE NOTE: The information contained in this Instruction Manual is designed to assist you in the safe operation and maintenance of the power tool. Some illustrations in this Instruction Manual may show details or attachments that differ from those on your own power tool. NAME OF PARTS Grip Nameplate...

  • Page 12: Accessories

    ACCESSORIES WARNING: Accessories for this power tool are mentioned in this Instruction Manual. The use of any other attachment or accessory can be dangerous and could cause injury or mechanical damage. STANDARD ACCESSORIES (1)Case (Modeled plastic) (Code No. 307786) ............. 1 (2)Side Handle (Code No.
  • Page 13 External dia. Code No. Taper mode Code No. Applicable drill bit 7/16" 7/16" (11 mm) 944460 (11 mm) 31/64" (12.3 mm) Drill bit 31/64" 1/2" (12.7 mm) Morse taper 944461 303617 (Taper (12.3 mm) 9/16" (14.3 mm) (No. 1) shank) 1/2"...
  • Page 14 <Outer wedge type with the female screw> W 1/4" W 5/16" W 3/8" Anchor size (6.3 mm) (8 mm) (9.5 mm) 10-15/64" 10-15/64" 6-19/64" 10-15/64" Overall Length (260 mm) (260 mm) (160 mm) (260 mm) Code No. 302976 302975 303621 302974 <Inner wedge type with the headless screw>...
  • Page 15 Center Code N0. Core bit (outer diameter) Code No. Core bit shank Code No. 63/64"(25 mm) 982672 Overall length – – 1-9/64" (29 mm) 982673 4-1/8" 303625 1-1/4" (32 mm) 982674 (105 mm) 982684 1-3/8" (35 mm) 982675 11-13/18" 303626 1-1/2"...
  • Page 16 6. Drilling holes and driving screws (rotation only) s Drill chuck, chuck adaptor and chuck wrench Special screw Drill chuck (13 VLR) Chuck adaptor G Code No. 981122 (include chuck wrench) (SDS-plus shank) Code No. 950275 Code No. 303623 Chuck wrench 7.

  • Page 17: Applications

    0.15 lbs (70 g) (in a green tube) Code No. 308471 0.07 lbs (30 g) (in a green tube) Code No. 981840 NOTE: Accessories are subject to change without any obligation on the part of the HITACHI. APPLICATIONS Rotation and striking function...
  • Page 18 4. Confirming condition of the envi- ronment: Front cap Drill bit Confirm that the work site is placed un- Grip der appropriate conditions conforming to prescribed precautions. 5. Mounting the drill bit (Fig. 2) (1)To attach a drill bit (SDS-plus shank), fully pull the grip in the direction of the Part of SDS-plus shank arrow as shown in Fig.

  • Page 19: How To Use

    s When turning the rotary hammer on while the dust collector (B) is detached from a concrete surface, the dust collector (B) will rotate together with the drill bit. Make sure to turn on the switch after pressing the dust cup on the concrete surface.
  • Page 20 (3)Pushing the rotary hammer forcibly is not necessary at all. Pushing slightly so that drill dust comes out gradually is just sufficient. Fig. 7 CAUTION: s When the drill bit touches construction iron bar, the bit will stop immediately and the rotary hammer will react to revolve. Therefore please grip the side handle and handle tightly as shown in Fig.
  • Page 21 s Do not attempt to use the rotary hammer in the rotation and striking function with the drill chuck and chuck adaptor attached. This would seriously shorten the service life of every component of the machine. 4. When driving machine screws (Fig. Socket First, insert the bit into the socket in the end of the chuck adaptor (D).
  • Page 22 6. Using depth gauge (Fig. 11) (1)Loosen the knob on the side handle, and Mounting Hole insert the depth gauge into the mount- Depth Gauge ing hole on the side handle. (2)Adjust the depth gauge position accord- ing to the depth of the hole and tighten the knob bolt securely.

  • Page 23: How To Use The Core Bit (For Light Load)

    HOW TO USE THE CORE BIT (FOR LIGHT LOAD) When boring penetrating large hole use the core bit (for light load). At that time use with the center pin and the core bit shank provided as optional accessories. 1. Mounting COUTION: s Be sure to turn power OFF and discon- Core Bit...

  • Page 24: Lubrication

    COUTION: s When removing the center pin and the guide Plate, turn OFF the switch and disconnect the plug form the power receptacle. Fig. 17 3. Dismounting. (Fig. 18) (1)Remove the core bit shank from the ro- tary hammer and strike the head of the core bit shank strongly two or three times with the hammer holding the core bit, then the thread becomes loose and...

  • Page 25: Maintenance And Inspection

    All quality power tools will eventually require servicing or replacement of parts because of wear from normal use. To assure that only authorized replacement parts will be used, all service and repairs must be performed by a HITACHI AUTHORIZED SERVICE CENTER, ONLY.
  • Page 27 501 Case Inner Cover 502 Side Handle Spring (B) 503 Depth Stopper Second Shaft Parts are subject to change without any obli- Washer (B) gation on the part of the HITACHI due to im- Clutch Spring provement. Clutch O-Ring (S-8)
  • Page 28 Nippon Bldg., 6-2, Ohtemachi 2-chome, Chiyoda-ku, Tokyo 100, Japan Code No. C99055362 N Printed in Japan...

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