INSTRUCTION MANUAL AND SAFETY INSTRUCTIONS FOR ROTARY HAMMER MODEL DH 24PD WARNING: Improper and unsafe use of this power tool can result in death or serious bodily injury! This manual contains important information about product safety. Please read and understand this manual before operating the power tool. Please keep this manual available for others before they use the power tool.
— CONTENTS — Page IMPORTANT INFORMATION ................................................................................... 3 MEANINGS OF SIGNAL WORDS ........................................................................... 3 SAFETY ........................................................................................................................ 4 GENERAL SAFETY RULES ...................................................................................... 4 SPECIFIC SAFETY RULES AND SYMBOLS ........
IMPORTANT INFORMATION Read and understand all of the operating instructions, safety precautions and warnings in the Instruction Manual before operating or maintaining this power tool. Most accidents that result from power tool operation and maintenance are caused by the failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing a potentially hazardous situation before it occurs, and by observing appropriate safety procedures.
SAFETY GENERAL SAFETY RULES WARNING: Read and understand all instructions. Failure to follow all instructions listed below, may result in electric shock, fire and/or serious personal injury. SAVE THESE INSTRUCTIONS 1. Work Area (1) Keep your work area clean and well lit. Cluttered benches and dark areas invite accidents. (2) Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Power tools create sparks which may ignite the dust or fumes.
(2) Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or long hair can be caught in moving parts. (3) Avoid accidental starting. Be sure switch is off before plugging in. Carrying tools with your finger on the switch or plugging in tools that have the switch on invites accidents. (4) Remove adjusting keys or switches before turning the tool on.
(2) When servicing a tool, use only genuine Hitachi replacement parts. Follow instructions in the Maintenance section of this manual. Use of unauthorized parts or failure to follow Maintenance Instruction may create a risk of electric shock or injury. 6. Never touch moving parts. Never place your hands, fingers or other body parts near the tool’s moving parts. 7. Never operate without all guards in place. Never operate this tool without all guards or safety features in place and in proper working order.
17. Never leave tool running unattended. Turn power off. Don’t leave tool until it comes to a complete stop. 18. Carefully handle power tools. Should a power tool be dropped or struck against hard materials inadvertently, it may be deformed, cracked, or damaged. 19. Do not wipe plastic parts with solvent. Solvents such as gasolie, thinner, benzine, carbon tetrachloride, and alcohol may damage and crack plastic parts. Do not wipe them with such solvents.
DOUBLE INSULATION FOR SAFER OPERATION To ensure safer operation of this power tool, HITACHI has adopted a double insulation 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. Therefore, either the symbol “ ” or the words and “Double insulation” appear on the power tool or on the nameplate.
FUNCTIONAL DESCRIPTION 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 Drill Bit Front Cap Nameplate Housing Switch Dust Collecting Adaptor Side Handle Change Lever Dust bag Lever Fig.
ASSEMBLY AND OPERATION APPLICATIONS Rotation and striking function 䡬 Drilling anchor holes 䡬 Drilling holes in concrete 䡬 Drilling holes in tile Rotation only function 䡬 Drilling in steel or wood (with optional accessories). 䡬 Tightening machine screws, wood screws (with optional accessories). PRIOR TO OPERATION 1. Power source Ensure that the power source to be utilized conforms to the power source requirements specified on the product nameplate. 2.
6. Mounting the drill bit (Fig. 2) Drill bit Front cap Grip (1) To attach a drill bit (SDS-plus shank), fully pull the grip in the direction of the arrow as shown in Fig. 2 and insert the drill bit as far as it will go while manually turning. (2) By releasing the grip, the drill bit will be secured. (3) To remove the drill bit, fully pull the grip Part of SDS-plus shank Fig. 2 in the direction of the arrow and pull out the drill bit. 7.
drill bits which have 6-17/32" (166 mm), 6-19/64" (160 mm) and 4-21/64" (110 mm) overall length. 䡬 Dump particles after every two or three holes when drilling. 䡬 Please replace the drill bit after removing dust collector (B). 8. Selecting the driver bit Screw heads or bits will be damaged unless a bit appropriate for the screw diameter is employed to drive in the screws. 9. Confirm the direction of bit rotation (Fig.
CAUTION: 䡬 When the drill bit touches an iron reinforcing rod, 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. 7. 3. Using the dust-collecting adaptor and dust bag. Attachment Mounting Hole Rod Dust Using this unit with the dust-collecting Collecting Adaptor adaptor and dust bag attached creates a more hygienic working environment free of flying dust. Attach as shown in Fig.1.
(2) Adjusting the dust-collecting adaptor. a) Adjusting the position of the dustcollecting adaptor. After firmly inserting the drill bit, loosen the wing bolt and drill bit tip and the end of the dust-collecting adaptor in contact with each other (see Fig.11). b) Setting the hole-drilling depth. Move the stopper to determine the stroke. The stroke is the hole-drilling depth (see Fig.11). 䡬 The maximum hole-drilling depth when using the dust-collecting adaptor is 4" (100 mm).
4. When not using the dust-collecting adaptor Cap Hose Attachment Hole When removing the dust-collecting adaptor and the dust bag to use as a normal rotary hammer, insert the provided cap in the hose attachment hole. (see Fig.14) After removing the dust bag, the air blowing out from the attachment hole is reduced and no air will blow onto your face. Dust Bag Attachment Hole Fig.14 Cap Hose Attachment Hole 5. Rotation only Remove the dust-collecting adaptor as it cannot be used.
6. When driving machine screws (Fig. 17) Bit First, insert the bit into the socket in the end of chuck adaptor (D). Next, mount chuck adaptor (D) on the main unit using procedures described in 6 (1), (2), (3), put the tip of the bit in the slots in the head of the screw, grasp the main unit and tighten the screw. Socket Chuck Adaptor (D) Front Cap Grip Fig. 17 CAUTION: 䡬 Exercise care not to excessively prolong driving time, otherwise, the screws may be damaged by excessive force.
8. How to use the drill bit (taper shank) and the taper shank adaptor. (1) Mount the taper shank adaptor to the rotary hammer. (Fig. 18) (2) Mount the drill bit (taper shank) to the taper shank adaptor. (Fig. 18) (3) Turn the switch ON, and drill a hole in prescribed depth. (4) To remove the drill bit (taper shank), insert the cotter into the slot of the taper shank adaptor and strike the head of the cotter with a hammer supporting on the rests. (Fig.
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.
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. NOTE: Accessories are subject to change without any obligation on the part of the HITACHI. STANDARD ACCESSORIES (1)Case (Molded plastic) (Code No. 302211) ............................................................... 1 (2)Side Handle (Code No. 303659) .......................................................
External dia. 7/16" (11 mm) 31/64" (12.3 mm) 1/2" (12.7 mm) 9/16" (14.3 mm) 73/128" (14.5 mm) 11/16" (17.5 mm) 27/32" (21.5 mm) Code No. Taper mode Code No. Morse taper (No. 1) 303617 Morse taper (No. 2) 303618 A-taper 303619 B-taper 303620 944460 944461 993038 944462 944500 944463 944464 Applicable drill bit 7/16" (11 mm) 31/64" (12.3 mm) Drill bit 1/2" (12.7 mm) (Taper 9/16" (14.3 mm) shank) 73/128" (14.5 mm) 11/16" (17.5 mm) Drill bit (Taper shank) 27/32" (21.
Anchor size Overall Length Code No. W 1/4" (6.3 mm) 10-15/64" (260 mm) 302976 W 5/16" (8 mm) 10-15/64" (260 mm) 302975 W 3/8" (9.5 mm) 6-19/64" (160 mm) 303621 10-15/64" (260 mm) 302974 Anchor size Overall Length Code No. W 1/4" (6.3 mm) 10-15/64" (260 mm) 302979 W 5/16" (8 mm) 10-15/64" (260 mm) 302978 W 3/8" (9.
4. Bolt placing operation with Chemical Anchor. (rotation + striking) ( Standard socket on the market ) (SDS-plus shank) 1/2" (12.7 mm) Chemical Anchor Adapter (Code No.303044) 3/4" (19 mm) Chemical Anchor Adapter (Code No. 303045) 5. Drilling holes and driving screws (rotation only) 䡬 Drill chuck, chuck adaptor and chuck wrench Special screw Drill chuck (13 VLR) Chuck adaptor (G) Code No. 981122 (includes chuck wrench) (SDS-plus shank) Code No. 950275 Code No. 303623 Chuck wrench 6.
7. Driving Screws (rotation only) Bit No. Chuck adaptor (D) (SDS-plus shank) Code No. 303624 Phillips Driver Bit Bit No. No.2 No.3 Screw Size 1/8" ~ 3/16" (3 – 5 mm) 1/4" ~ 5/16" (6 – 8 mm) Length 31/32" (25 mm) 31/32" (25 mm) Code No. 971511Z 971512Z 8. Dust cup, Dust collector (B) Dust cup Code No. 971787 Dust collector (B) Code No. 306885 9. Paper dust bag Code No. 302741 10. Hammer grease A 1.1 lbs (500 g) (in a can) Code No. 980927 0.15 lbs (70 g) (in a green tube) Code No. 308471 0.
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