HiKOKI DH40SC - Rotary hammer

DH40SC - Rotary hammer HiKOKI - Free user manual and instructions

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Product Type Rotary Hammer
Brand HiKOKI
Model DH40SC
Power Input 1050 W
No-Load Speed 0 – 400 min⁻¹
Impact Energy (EPTA) 8.0 J
Bit Shank SDS-Max
Drilling Capacity (Concrete) 40 mm (1-9/16 in)
Drilling Capacity (Steel) 13 mm (1/2 in)
Drilling Capacity (Wood) 32 mm (1-1/4 in)
Weight (without cord) 8.5 kg (18.7 lbs)
Overall Length 490 mm (19-5/16 in)
Power Supply Corded, 120 V or 230 V (depending on region)
Vibration Control Built-in anti-vibration system
Safety Clutch Yes, torque limiting clutch
Variable Speed Yes, with speed dial
Reversing Yes, forward/reverse switch
Service and Maintenance Regular cleaning and lubrication recommended; refer to manual for details
Spare Parts Availability Available through authorized HiKOKI service centers
Included Accessories Side handle, depth stop, grease, carrying case (may vary)

Frequently Asked Questions - DH40SC HiKOKI

What is the power rating of the HiKOKI DH40SC?
The HiKOKI DH40SC has a power input of 1050 W, providing sufficient power for heavy-duty drilling and chiseling tasks in concrete and masonry.
What type of drill bits does the DH40SC use?
This rotary hammer accepts SDS-Max shank bits. This system ensures efficient power transfer and quick bit changes for drilling and chiseling.
How do I change the chisel or bit on the DH40SC?
To change a bit or chisel, first ensure the tool is unplugged. Pull back the locking sleeve at the front of the tool, insert the new bit until it clicks, then release the sleeve to lock it in place. Always use the bit grease supplied for optimal performance.
What maintenance is required for the DH40SC?
Regular maintenance includes cleaning the tool after use, lubricating the bit shank with the supplied grease, and inspecting the carbon brushes periodically. Also, keep the air vents clear to prevent overheating.
Does the DH40SC have a safety clutch?
Yes, the DH40SC is equipped with a safety clutch that disengages the drive if the bit jams, reducing sudden torque reaction and enhancing user safety.
Can the DH40SC be used for chiseling?
Absolutely. The DH40SC features a selectable operating mode that allows you to switch between rotary drilling, hammer drilling, and chiseling only. For chiseling, select the appropriate mode and use a chisel bit with an SDS-Max shank.
What is the drilling capacity in concrete?
The maximum drilling capacity in concrete with the DH40SC is 40 mm (1-9/16 inches) using a solid carbide drill bit. With core bits, larger diameters are possible.
What is the weight of the DH40SC?
The tool weighs approximately 8.5 kg (18.7 lbs) without the power cord. This weight helps absorb vibrations during heavy-duty use but may require two-handed operation.
How do I reverse the direction on the DH40SC?
The reverse switch is located above the trigger. Push it to the left for forward rotation (drilling) and to the right for reverse rotation (e.g., when removing a stuck bit). Always allow the motor to stop before switching.
Where can I find spare parts for the DH40SC?
Authorized HiKOKI service centers carry genuine spare parts for the DH40SC. You can locate the nearest service center on the HiKOKI website or contact your local dealer. Always use original parts to maintain performance and safety.

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Download the instructions for your Rotary hammer in PDF format for free! Find your manual DH40SC - HiKOKI and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. DH40SC by HiKOKI.

USER MANUAL DH40SC HiKOKI

natural_image Line drawing of a mechanical drill bit with threaded shaft and handle, enclosed in a circular frame (no text or symbols)

保留备用
Keep for future reference

HiKOKI DH40SC - 1

natural_image Technical line drawing of a twist drill bit (no text or symbols)

● 钻头(六角柄)

外径总长
280 mm 400 mm 505 mm 550 mm
代码号 代码号 代码号 代码号
16 mm 985721 985720 985722 991330
18 mm ---991331
19 mm 985724 985723 985725 991332
20 mm ---991333
22 mm 985727 985726 985728 991335
25 mm 985730 985729 985731 991336
28 mm 985733 985732 985734 991337
30 mm ---991338
32 mm 985736 985735 985737 991339
35 mm ---991340
38 mm 985739 985738 985740 991341
40 mm 313322---

2. 锚栓孔钻(旋钻+锤击)

HiKOKI DH40SC - 锚栓孔钻(旋钻+锤击) - 1

+

HiKOKI DH40SC - 锚栓孔钻(旋钻+锤击) - 2

● 钻头(锥柄)

锥柄转接器

natural_image Line drawing of a hand using a drill bit with a screwdriver (no text or symbols)

图 4

HiKOKI DH40SC - 锥柄转接器 - 1

natural_image Line drawing of a hand operating a drill bit with a tool, no text or symbols present

图 5
HiKOKI DH40SC - 锥柄转接器 - 2

natural_image Line drawing of a hand operating a mechanical tool with a screwdriver inserted (no text or symbols)

图7

  1. 锚栓附加器的使用方法
natural_image Diagram of a mechanical or fluidic device with a tool interacting with a submerged object, showing motion arrows (no text or symbols)

图 11

  1. 如何使用钻头(锥柄)和锥柄转接器
natural_image Illustration of a hand using a drill bit to drive a mechanical component (no text or symbols)

图 17

取心 钻柄

图 18

更换润滑油

中文

ROTARY HAMMER SAFETY WARNINGS ....20

ADDITIONAL SAFETY WARNINGS 21

SYMBOLS 21

SPECIFICATIONS....22

STANDARD ACCESSORIES 22

OPTIONAL ACCESSORIES (sold separately)....23

APPLICATIONS....25

GREASE REPLACEMENT ....30

MAINTENANCE AND INSPECTION 30

SERVICE PARTS LIST 32

GENERAL POWER TOOL SAFETY WARNINGS

HiKOKI DH40SC - GENERAL POWER TOOL SAFETY WARNINGS - 1

WARNING

Read all safety warnings and all instructions.

Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.

Save all warnings and instructions for future reference.

The term “power tool” in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.

1) Work area safety

a) Keep work area clean and well lit.

Cluttered or dark areas invite accidents.

b) Do not operate power tools in explosive atmospheres, such as in the presence of fl ammable liquids, gases or dust.

Power tools create sparks which may ignite the dust or fumes.

c) Keep children and bystanders away while operating a power tool.

Distractions can cause you to lose control.

2) Electrical safety

a) Power tool plugs must match the outlet.

Never modify the plug in any way.

Do not use any adapter plugs with earthed (grounded) power tools.

Unmodified plugs and matching outlets will reduce risk of electric shock.

b) Avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges and refrigerators.

There is an increased risk of electric shock if your body is earthed or grounded.

c) Do not expose power tools to rain or wet conditions.

Water entering a power tool will increase the risk of electric shock.

d) Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool.

Keep cord away from heat, oil, sharp edges or moving parts.

Damaged or entangled cords increase the risk of electric shock.

e) When operating a power tool outdoors, use an extension cord suitable for outdoor use.

Use of a cord suitable for outdoor use reduces the risk of electric shock.

f) If operating a power tool in a damp location is unavoidable, use a residual current device (RCD) protected supply.

Use of an RCD reduces the risk of electric shock.

3) Personal safety

a) Stay alert, watch what you are doing and use common sense when operating a power tool.

Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication.

A moment of inattention while operating power tools may result in serious personal injury.

b) Use personal protective equipment. Always wear eye protection.

Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.

c) Prevent unintentional starting. Ensure the switch is in the off position before connecting to power source and/or battery pack, picking up or carrying the tool.

Carrying power tools with your finger on the switch or energising power tools that have the switch on invites accidents.

d) Remove any adjusting key or wrench before turning the power tool on.

A wrench or a key left attached to a rotating part of the power tool may result in personal injury.

e) Do not overreach. Keep proper footing and balance at all times.

This enables better control of the power tool in unexpected situations.

f) Dress properly. Do not wear loose clothing or jewellery. Keep your hair, clothing and gloves away from moving parts.

Loose clothes, jewellery or long hair can be caught in moving parts.

g) If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used.

Use of dust collection can reduce dust-related hazards.

4) Power tool use and care

a) Do not force the power tool. Use the correct power tool for your application.

The correct power tool will do the job better and safer at the rate for which it was designed.

English

b) Do not use the power tool if the switch does not turn it on and off.

Any power tool that cannot be controlled with the switch is dangerous and must be repaired.

c) Disconnect the plug from the power source and/or the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools.

Such preventive safety measures reduce the risk of starting the power tool accidentally.

d) Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool.

Power tools are dangerous in the hands of untrained users.

e) Maintain power tools. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool's operation.

If damaged, have the power tool repaired before use.

Many accidents are caused by poorly maintained power tools.

f) Keep cutting tools sharp and clean.

Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.

g) Use the power tool, accessories and tool bits etc. in accordance with these instructions, taking into account the working conditions and the work to be performed.

Use of the power tool for operations different from those intended could result in a hazardous situation.

5) Service

a) Have your power tool serviced by a qualified repair person using only identical replacement parts.

This will ensure that the safety of the power tool is maintained.

CAUTION

Keep children and infi rm persons away.

When not in use, tools should be stored out of reach of children and infirm persons.

ROTARY HAMMER SAFETY WARNINGS

  1. Wear ear protectors.

Exposure to noise can cause hearing loss.

  1. Use auxiliary handle(s), if supplied with the tool.

Loss of control can cause personal injury.

  1. Hold power tool by insulated gripping surfaces, when performing an operation where the cutting accessory may contact hidden wiring or its own cord.

Cutting accessory contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.

ADDITIONAL SAFETY WARNINGS

  1. Do not touch the bit during or immediately after operation. The bit becomes very hot during operation and could cause serious burns.
  2. Before starting to break, chip or drill into a wall, floor or ceiling, thoroughly confirm that such items as electric cables or conduits are not buried inside.
  3. Always hold the body handle and side handle of the power tool firmly. Otherwise the counterforce produced may result in inaccurate and even dangerous operation.

  4. Wear a dust mask.

Do not inhale the harmful dusts generated in drilling or chiseling operation. The dust can endanger the health of yourself and bystanders.

  1. Mounting the tool

To prevent accidents, make sure to turn the switch off and disconnect the plug from the receptacle.
When using tools such as bull points, drill bits, etc., make sure to use the genuine parts designated by our company.
○ Clean the shank portion of the drill bit. Then smear the shank portion with the grease or machine oil.

  1. The rotation speed cannot be changed by pressing the rotation speed selector switch while the motor is rotating. To change speeds, switch off the tool first.

  2. RCD

The use of a residual current device with a rated residual current of 30 mA or less at all times is recommended.

SYMBOLS

WARNING

The following show symbols used for the machine. Be sure that you understand their meaning before use.

To reduce the risk of injury, user must read instruction manual. n_0 No-load speed
VRated voltage--s/--sRunning Time / Down Time
ACurrent---/minrevolutions per minute
WWatt Class II tool

SPECIFICATIONS

ModelDH40SC
Voltage 220 V~
Power input 1100 W
No-load speed 620 /min
Full-load impact rate 2800 /min
CapacityDrill bit: 40 mmCore bit: 120 mm
Weight 7.2 kg

STANDARD ACCESSORIES

See the list below to check the accessories for DH40SC.

Case (Molded plastic)(Code No. 371122)HiKOKI DH40SC - STANDARD ACCESSORIES - 11
Side HandleHiKOKI DH40SC - STANDARD ACCESSORIES - 21
Stopper(Code No. 971786)HiKOKI DH40SC - STANDARD ACCESSORIES - 31
Hammer Grease A(Code No. 981840)HiKOKI DH40SC - STANDARD ACCESSORIES - 41

OPTIONAL ACCESSORIES (sold separately)

1. Through-hole drilling (Rotation + Hammering)

HiKOKI DH40SC - Through-hole drilling (Rotation + Hammering) - 1

● Drill bit (hexagon shank)

External dia.Overall length
280 mm 400mm 505 mm 550 mm
Code No. CodeNo. Code No.Code No.
16 mm 985721 985720 985722 991330
18 mm ---991331
19 mm 985724 985723 985725 991332
20 mm ---991333
22 mm 985727 985726 985728 991335
25 mm 985730 985729 985731 991336
28 mm 985733 985732 985734 991337
30 mm ---991338
32 mm 985736 985735 985737 991339
35 mm ---991340
38 mm 985739 985738 985740 991341
40 mm 313322 ---

2. Anchor hole drilling (Rotation + Hammering)

HiKOKI DH40SC - Anchor hole drilling (Rotation + Hammering) - 1

+

HiKOKI DH40SC - Anchor hole drilling (Rotation + Hammering) - 2

● Drill bit (taper shank)

Drill bit (taper shank)
External dia. Morse Taper Code No.
11.0944460
12.3 944461
14.3 944462 No. 1
14.5 944500
17.5 944463
21.5 No. 2944464

● Taper shank adapter

Taper shank adapter Code No.
Morse Taper No. 1 981911
Morse Taper No. 2 981912

HiKOKI DH40SC - Anchor hole drilling (Rotation + Hammering) - 3

- Cotter

Code No. 944477

English

  1. Large dia. hole boring (Rotation + Hammering)

HiKOKI DH40SC - English - 1

● Guide plate

HiKOKI DH40SC - English - 2

● Center pin

HiKOKI DH40SC - English - 3

Core bit

HiKOKI DH40SC - English - 4

● Core bit shank (hexagon shank)

Code No.
985388
955169
Code No.
955165
External dia.
50 mm
120 mm
Code No.
955163
  1. Anchor work (for Automatic boring anchors)

HiKOKI DH40SC - English - 5

● Anchor adapter (for Rotation + Hammering)

Anchor size Code No.
W1/4 (No. 20) 985756
W5/16 (No. 25) 985757
W3/8 (No. 30) 985758
W1/2 (No. 40) 985759
W5/8 (No. 50) 985760

● Anchor adapter (for Hammering)

Anchor size Code No.
W3/8 (No. 30) 981929
W1/2 (No. 40) 981930
W5/8 (No. 50) 981931

+

HiKOKI DH40SC - English - 6

- Drift key

Code No. 944574

  1. Crushing (Hammering)

HiKOKI DH40SC - English - 7

● Bull point

Overall length Shank type Code No.
280 mmRound 981922
Hexagon 980752
450 mmRound 981923
Hexagon 980753
  1. Groove digging and edging (Hammering)

HiKOKI DH40SC - English - 8

● Cold chisel

Overall length Code No.
280 mm 981925
450 mm 981926

7. Asphalt cutting (Hammering)

HiKOKI DH40SC - Asphalt cutting (Hammering) - 1

- Cutter

Overall length Width Code No.
280 mm 45 mm 981924

8. Digging

HiKOKI DH40SC - Digging - 1

- Scoop

Code No. 956126

9. Surface Roughing (Hammering)

HiKOKI DH40SC - Surface Roughing (Hammering) - 1

- Bushing Tool

Code No. 955183

HiKOKI DH40SC - Surface Roughing (Hammering) - 2

HiKOKI DH40SC - Surface Roughing (Hammering) - 3

- Shank

Overall length Code No.

250 mm 955186

APPLICATIONS

○ Drilling anchor holes
○ Drilling holes in concrete
○ Crushing concrete, chipping, digging, and squaring

(Some applications need optional accessories)

PRIOR TO OPERATION

  1. Power source

Ensure that the power source to be utilized conforms to the power requirements specified on the product nameplate.

  1. Power switch

Ensure that the power switch is in the OFF position. If the plug is connected to a receptacle while the power switch is in the ON position, the power tool will start operating immediately, which could cause a serious accident.

  1. Extension cord

When the work area is removed from the power source, use an extension cord of sufficient thickness and rated capacity. The extension cord should be kept as short as practicable.

  1. Check the receptacle

If the receptacle only loosely accepts the plug, the receptacle must be repaired.

Contact a licensed electrician to make appropriate repairs.

If such a faulty receptacle is used, it may cause overheating, resulting in a serious hazard.

English

  1. Confirming condition of the environment

Confirm that the work site is placed under appropriate conditions conforming to prescribed precautions.

  1. How to install tool

CAUTION

For tools such as a drill bit and a bull point, use only HiKOKI genuine parts.

(1) Clean, then smear the tool shank with the grease provided in the green tube (Fig. 1).
(2) Press the push button, slightly lift the tool retainer in the direction of arrow Ⓐ as shown in Fig. 2 to hook the tool retainer edge with the push button and engage the push button.
(3) Release your finger from the push button and further lift the tool retainer in the direction of arrow Ⓐ.

NOTE

First time when the tool retainer is lifted, remove your finger from the push button. If the push button is kept pressed, the edge of the tool retainer comes in contact with your finger and the tool retainer cannot be lifted.

(4) Fully insert the tool shank into the hexagonal hole in the front cover.
(5) Return the tool retainer to secure the tool.
(6) Pull the tool to make sure it is locked completely.

NOTE

Remove in the reverse order of installation.

Grease Tool shank

Fig. 1

Retainer edge Retainer (tool holer) Push button Front cover Tool shank

Fig. 2

WHEN THE PUSH BUTTON DOES NOT OPERATE SMOOTHLY

When the push button does not operate smoothly, please remove dirt from the inside through the outlet using a wire, etc. Then lubricate lubricating oil and push the push button several times to make it operate smoothly. (Fig. 3)

Push button Outlet Front cover Retainer (tool holer)

Fig. 3

HOW TO USE

1. How to drill holes (Fig. 4)

(1) Pull the switch trigger after applying the drill bit tip to the drilling position.
(2) It is unnecessary to forcibly press the rotary hammer main body. It is sufficient to slightly press the rotary hammer to an extent that clips are freely discharged.

CAUTION

Although this machine is equipped with a slip clutch, if the drill bit becomes bound in concrete or other material, the resultant stoppage of the drill bit could cause the machine body to turn in reaction. Ensure that the main handle and side handle are gripped firmly during operation.

2. How to chisel or demolish (Fig. 5)

By applying the tool tip to the chiseling or demolishing position, operate the rotary hammer by utilizing its own weight.

Forcible pressing or thrusting is unnecessary.

3. Install the stopper (Fig. 6)

(1) Loosen the wing bolt, and insert the stopper into the mounting hole on the side handle.

(2) Adjust the stopper position according to the depth of the hole and tighten the wing bolt securely.

4. Warming up (Fig. 7)

The grease lubrication system in this unit may require warming up in cold regions.

Position the end of the bit so makes contact with the concrete, turn on the switch and perform the warming up operation. Make sure that a hitting sound is produced and then use the unit.

CAUTION

When the warming up operation is performed, hold the side handle and the main body securely with both hands to maintain a secure grip and be careful not to twist your body by the jammed drill bit.

HiKOKI DH40SC - CAUTION - 1

natural_image Line drawing of a hand using a power tool to spray particles (no text or symbols)

Fig. 4

HiKOKI DH40SC - CAUTION - 2

natural_image Line drawing of a hand using a drill bit to lift a tool, with no visible text or symbols

Fig. 5
Stopper Mounting hole Fig. 6

Fig. 6

HiKOKI DH40SC - CAUTION - 4

natural_image Line drawing of a hand operating a mechanical tool with a screwdriver inserted (no text or symbols)

Fig. 7

English

5. How to use the anchor adapter

(1) Install the automatic boring anchor in the anchor adapter (Fig. 8).
(2) Turn ON the switch and drill a base hole with the automatic boring anchor. (Fig. 9)
At the start of the hole-drilling slightly tilt the rotary hammer to determine the hole position.

(3) After cleaning out dust with a syringe, attach the plug to the anchor tip and drive in the anchor with a manual hammer.

(4) After driving in the anchor, use the drift key to separate the anchor. (Fig. 10)

(5) By employing a manual hammer or pliers, snap off the tapered portion of the anchor. (Fig. 11)

Plug Snap off this portion after driving in the automatic boring anchor.

Fig. 8

CAUTION

Since the snapped-off tapered portion will fly about, pay attention to the snapping direction.

Hole depth

Fig. 9

Wrench out Drift key

Fig. 10

HiKOKI DH40SC - CAUTION - 3

natural_image Diagram of a hand using a tool to lift a test tube into a liquid, with an arrow indicating motion (no text or symbols present)

Fig. 11

  1. How to use the drill bit (taper shank) and the taper shank adaptor.

(1) Install drill bit with taper shank in the taper shank adaptor. (Fig. 12)

(2) Turn the power on and drill a base hole.

(3) After cleaning out dust with a syringe, attach the plug to the anchor tip and drive in the anchor with plug to the anchor tip and drive in the anchor with a manual hammer.

(4) To remove the drill bit with taper shank, insert a cotter into the slot of the taper shank adaptor, place supports under the Rotary Hammer and tap the cotter with a manual hammer. (Fig. 13)

Taper shank adaptor Drill bit (Taper shank)

Fig. 12

Taper shank adaptor Cotter Support

Fig. 13

HOW TO USE THE CORE BIT

When boring penetrating large holes use the core bit. At that time use with the center pin and the core bit shank provided as optional accessories.

1. Mounting

CAUTION

Be sure to turn power OFF and disconnect the plug from the receptacle.

(1) Mount the core bit to the core bit shank (Fig. 14).

Lubricate the thread of the core bit shank to facilitate disassembly.

(2) Mount the core bit shank to the rotary hammer (Fig. 15).
(3) Insert the center pin into the guide plate until it stops.
(4) Engage the guide plate with the core bit, and turn the guide plate to the left or the right so that it does not fall even if it faces downward (Fig. 16).
2. How to bore (Fig. 17)
(1) Connect the plug to the receptacle.
(2) A spring is installed in the center pin.

Push it lightly to the wall or the floor straight.

Connect all over the surface of the core bit tip and start operating.

(3) When boring about 5 mm in depth the position of the hole will be establish. Bore after that removing the center pin and the guide plate from core bit.
(4) Application of excessive force will not only expedite the work, but will deteriorate the tip edge of the drill bit, resulting in reduced service life of the rotary hammer.

CAUTION

When removing the center pin and the guide plate, turn OFF the switch and disconnect the plug from the receptacle.

  1. Dismounting (Fig. 18)

Remove the core bit shank from the rotary hammer and strike the head of the core bit shank strongly two or three times with a manual hammer holding the core bit, then the thread becomes loose and the core bit can be removed.

HiKOKI DH40SC - When removing the center pin and the guide plate, turn OFF the switch and disconnect the plug from the receptacle. - 1

Center pin Guide plate Core bit Core bit tip

Fig. 16

HiKOKI DH40SC - When removing the center pin and the guide plate, turn OFF the switch and disconnect the plug from the receptacle. - 3

natural_image Line drawing of a hand operating a drill bit with a threaded drill bit (no text or symbols)

Fig. 17

Core bit shank

Fig. 18

GREASE REPLACEMENT

This Rotary Hammer is of full air-tight construction to protect against dust and to prevent lubricant leakage.

Therefore, this Rotary Hammer can be used without lubrication for long periods. Replace the grease as described below.

Grease Replacement Period

After purchase, replace grease after every 6 months of usage. Ask for grease replacement at the nearest authorized Service Center.

MAINTENANCE AND INSPECTION

WARNING

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

  1. Inspecting the tool bits Since use of a dull tool will cause motor malfunctioning and degraded efficiency, replace the tool bit with new ones or resharpen them 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 loose, retighten them immediately. Failure to do so could result in serious hazard.

WARNING

Using this Rotary Hammer with loosen screws is extremely dangerous.

  1. 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.

  1. Inspecting the carbon brushes: (Fig. 19)

The motor employs carbon brushes which are consumable parts. When they become worn to or near “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 Nos. shown in the figure. In addition, always keep carbon brushes clean and ensure that they slide freely within the brush holders.

Wear limit No. of carbon brush 17 mm No.43 : 6 mm No.73 : 7 mm

Fig. 19

CAUTION

Using this Rotary Hammer with a carbon brush which is worn in excess of the wear limit will damage the motor.

○ Replacing carbon brushes:

Loosen the two set screws and remove the tail cover. Remove the brush caps and carbon brushes.

After replacing the carbon brushes, tighten the brush caps securely and to install the tail cover with securely tightening two set screws.

  1. Replacing supply cord

If the replacement of the supply cord is necessary, this has to be done by the manufacturer of this agent in order to avoid a safety hazard.

  1. Service parts list

CAUTION

Repair, modification and inspection of HiKOKI Power Tools must be carried out by a HiKOKI Authorized Service Center.

This Parts List will be helpful if presented with the tool to the HiKOKI Authorized Service Center when requesting repair or other maintenance. In the operation and maintenance of power tools, the safety regulations and standards prescribed in each country must be observed.

SERVICE PARTS LIST

DH40SC
Exploded view diagram of a mechanical assembly with numbered parts and component labels

ITEM NO.PART NAME Q'TY
1 RETAINER 1
2 DAMPER (B) 2
3 RETAINER PIN 2
4 PUSHING BUTTON 1
5 SET SPRING 1
6 SIDE HANDLE 1
7 WING BOLT 1
8 ROLL PIN D2×8 1
9 MOUNT 1
10 NUT M6 (10 PCS.) 1
11 HANDLE BOLT 1
12 DUST COVER 1
13 ROLL PIN D4×20 2
14SEAL LOCK HEX. SOCKET HD. BOLT M6×254
15 FRONT COVER1
16 O-RING2
17 O-RING1
18 BAND1
19HEX. SOCKET HD. BOLT (W/FLANGE) M6×254
20 CYLINDER CASE1
21 O-RING (1AS-60)1
22 DAMPER (B) 1
23 DRIVER HOLDER1
24 DRIVER1
25 DRIVER WASHER1
26 O-RING (C)1
27 SECOND HAMMER1
28 DAMPER WASHER 1
29 DAMPER1
30 DAMPER HOLDER1
31 STRIKER1
32 O-RING1
33 CYLINDER 1
34 CYLINDER KEY2
35 BEVEL GEAR1
ITEM NO.PART NAME Q'TY
36THRUST WASHER1
37O-RING1
38PISTON PIN 1
39PISTON 1
40CONNECTING ROD1
41FAN GUIDE1
42HEX. HD. TAPPING SCREW D5×552
43STATOR HOLDER2
44RUBBER BUSH 2
45BRUSH TERMINAL2
46STATOR ASS'Y 220V1
47HOUSING ASS'Y 1
48BRUSH CAP2
49CARBON BRUSH (1 PAIR)1
50BRUSH HOLDER2
51HEX. SOCKET SET SCREW M5×82
52WASHER (A) 1
53BALL BEARING 1
54BEARING HOLDER 1
55DUST SEAL1
56TAIL COVER1
57TAPPING SCREW (W/FLANGE) D5×204
58NOISE SUPPRESSOR (V)1
59PILLAR TERMINAL1
60CONNECTOR 500921
61NAME PLATE1
62CORD1
63CORD ARMOR D10.71
64BALL BEARING 6201DDCMPS2L1
65DUST WASHER (B)1
66ARMATURE 220V1
67HEX. SOCKET HD. BOLT (W/FLANGE) M5×162
68HANDLE1

English

ITEM NO.PART NAME Q'TY
69 TRIGGER 1
70 SWITCH 1
71 HANDLE COVER 1
72TAPPING SCREW(W/FLANGE) D4x252
73 TERMINAL 1
74 INTERNAL WIRE 1
75 CORD CLIP 1
76TAPPING SCREW(W/FLANGE) D4x162
77 CRANK CASE 1
78SEAL LOCK HEX. SOCKET HD. BOLT M6x454
79 SLIP CLUTCH ASS'Y 1
80 BEVEL PINION 1
81 FEATHER KEY 3x3x8 1
82 COLLAR 1
83 OIL SEAL (A) 1
84BALL BEARING6002DDCMPS2L1
85 WASHER 1
86 WASHER (A) 1
87 SECOND GEAR 1
88 GEAR HOLDER1
89 SPRING (C)10
90 NEEDLE10
91 SPACER1
92 BALL BEARING 629VV1
93 BEARING WASHER (C)1
94 GEAR COVER1
95SEAL LOCK HEX. SOCKET HD. BOLT M6x202
96HEX. SOCKET HD. BOLT(W/FLANGE) M54
97 CRANK COVER1
98 CYLINDER O-RING1
99 CRANK SHAFT1
100FEATHER KEY 3x3x8 1
ITEM NO.PART NAME Q'TY
101RETAINING RING FOR D40 HOLE1
102BALL BEARING 6203DDCMPS2L1
103O-RING (S-40)1
104OIL SEAL (B) 1
105FELT PACKING (A)1
106CAP SCREW1
107VALVE1
108FIRST GEAR1
109NEEDLE BEARING1
110SEAL PACKING1
111HOOD1
112HEX. SOCKET HD. BOLT (W/FLANGE) M5×121
501CASE1
502GREASE (A) FOR HAMMER. HAMMER DRILL (30G)1
503STOPPER ROD1

HiKOKI DH40SC - SERVICE PARTS LIST - 2

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Product information

Brand : HiKOKI

Model : DH40SC

Category : Rotary hammer