Hitachi DB10DL Technical Data And Service Manual

Brand: Hitachi

Model: DB10DL

Category: Power screwdrivers

Type: Technical Data And Service Manual

This manual is also suitable for

DB 10DL

Hitachi DB10DL is a lightweight and compact cordless driver drill equipped with a 10.8V lithium-ion battery that charges in just 40 minutes. Its 21-stage clutch provides precise torque control for various tasks, from delicate screw driving to powerful drilling. Illuminate dark work areas with the bright white LED lights, and check the remaining battery power at a glance using the battery level warning lamp. The soft-grip handle ensures a comfortable and secure grip, while the manual tightening mechanism allows for easy manual operation when the battery is depleted.

[ NEW FEATURES ]

Lightweight and compact

White LED light

Equipped with the new lithium-ion battery

Manual tightening mechanism

Battery level warning lamp

21-stage clutch

Slim and soft-grip handle

Blow-molded case

The Model DB 10DL is a cordless driver drill equipped with a 10.8-V lithium-ion battery. The Model DB 10DL has

the following main features:

(1) Lightweight and compact

(2) White LED light illuminates wide range of work area.

(3) Equipped with the newly developed lithium-ion battery (10.8 V, 1.5 Ah). This battery can be fully charged in

40 minutes.

(4) Manual tightening mechanism. Easy to tighten screws manually with the comfortable handle shape and the

soft grip.

(5) Battery level warning lamp. Easy to check the remaining battery power level.

We aim to ex

and our market share with the new Model DB 10DL.

LIST No. G899

Feb. 2008

PRODUCT NAME

Hitachi 10.8 V Cordless Driver Drill

Model DB 10DL

Constructing electric facilities, assembling machines and servicing

Tightening and loosening wood screws and machine screws

Drilling into wood

MARKETING OBJECTIVE

APPLICATIONS

SELLING POINTS

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

International Sales Division

REMARK:

For more information about HANDLING INSTRUCTIONS, visit our website at:

http://www.hitachi-koki.com/manual_view_export/

Throughout this TECHNICAL DATA AND SERVICE MANUAL, a symbol(s) is(are) used in the place of

company name(s) and model name(s) of our competitor(s). The symbol(s) utilized here is(are) as

follows:

Competitors

Symbols Utilized

Company Name Model Name

B BOSCH GSR10.8V-Li / PS20-2

CONTENTS

Page

SELLING POINT DESCRIPTIONS ----------------------------------------------------------------------------------------- 1

SPECIFICATIONS --------------------------------------------------------------------------------------------------------------4

COMPARISONS WITH SIMILAR PRODUCTS-------------------------------------------------------------------------- 5

1. Specifications comparisons

----------------------------------------------------------------------------------------------------------- 5

2. Drilling and fastening performance comparison per charge

------------------------------------------------------- 6

PRECAUTIONS IN SALES PROMOTION-------------------------------------------------------------------------------- 7

1. Safety Instructions

------------------------------------------------------------------------------------------------------------------------- 7

2. Inherent drawbacks of cordless driver drills requiring particular attention

during sales promotion

------------------------------------------------------------------------------------------------------------------- 9

REPAIR GUIDE---------------------------------------------------------------------------------------------------------------- 10

1. Precautions in disassembly and reassembly

----------------------------------------------------------------------------- 10

2. Precautions in disassembly and reassembly of battery charger

---------------------------------------------- 19

STANDARD REPAIR TIME (UNIT) SCHEDULES-------------------------------------------------------------------- 20

Assembly diagram for DB 10DL

-1-

Lightweight and compact

The Model DB 10DL has the shortest body in the class of 10.8 V cordless driver drill. It is easy to handle

and convenient for operation in narrow spaces.

HITACHI

Model

DB 10DL

L x H x W

147 x 197 x 48 166 x 167 x 49

* The height includes battery.

White LED light

The Model DB 10DL incorporates two white LED lights. These two white LED lights illuminate dark places

far and wide by emitting light from the front of the clutch dial.

SELLING POINT DESCRIPTIONS

Illuminating range of the white LED lights

(When illuminating 100 mm away from the object as shown

below)

Illuminating range of

the Model DB 10DL

Illuminating range of B

80 mm

100 mm

Pull the trigger switch to light up the light. The light keeps

on lighting while the trigger switch is being pulled. The

light goes out after releasing the trigger switch.

Trigger switch

The illuminating area of the white LED lights is 3 times

larger than B.

-2-

UC 10SFL

BCL 1015

Equipped with the new lithium-ion battery (BCL 1015)

The newly developed Type BCL 1015 lithium-ion battery (10.8 V, 1.5 Ah) can be fully charged by the Model

UC 10SFL charger in about 40 minutes.

The Type BCL 1015 is equipped with the overdischarge protection circuit, overload protection circuit,

battery overheat protection circuit and voltage monitoring circuit for each cell to prevent reduction of the

battery life due to overdischarge (overuse) or overcharge (excessive charging). This battery is safe thanks

to these protection circuits.

Precautions for use of the Type BCL 1015 lithium-ion battery

The Type BCL 1015 lithium-ion battery is equipped with a protective function that automatically stops output

to extend the battery life. The motor may stop automatically in any of the following cases (1), (2) and (3)

even if the switch is depressed continuously during operation. This is because the protective function is

activated. It is not faulty.

Protective

function

Cause of trouble Countermeasure

(1)

Overdischarge

protection circuit

Battery voltage is decreased to about 6 V.

Charge the battery immediately

in such case.

(2)

Overload

protection circuit

Heavy-duty work

Release the switch and eliminate

the cause of the overload problem.

(3)

Battery overheat

protection circuit

Continuous operation

or heavy-duty work

Remove the battery from the tool

and cool it down.

Manual tightening mechanism

The Model DB 10DL is usable as a manual screwdriver. Power off the Model DB 10DL and use it as a

manual screwdriver by turning the main body. Also, when the battery power is out accidentaly, can use it as

a manual screwdriver.

-3-

Battery level warning lamp

The battery level can be checked by pulling the

trigger switch while the power tool is in a no-load

state. The battery level warning lamp lights when

the battery power is very low. If this happens, charge

the battery.

21-stage clutch

Rotate the clutch dial and line up the numbers “1, 3, 5, ... 21” on

the clutch dial, or the black dot, with the triangle mark on the outer

body. Adjust the clutch dial in the weak or the strong torque

direction according to the torque you need.

Slim and Soft-grip handle

The handle is covered with soft elastomer. It is slim, soft, and slip-resistant.

Blow-molded case

The compact blow-molded case is convenient for carrying the tool.

Clutch dial

Drill mark

Triangle mark

Weak

Strong

-4-

Model DB 10DL

Screw driving

Machine screw------------------------------6 mm (1/4")

Wood screw ---------------------------------6 mm dia. x 38 mm (#14 x 1-1/2")

Capacity

Drilling Wood------------------- 18 mm (11/16") [Thickness 18 mm (11/16")]

Tool retainer

6.35 mm (1/4") bit holder

Rotation speed

0 – 400 min

–1

Torque

Slip torque ------ 1.0 – 6.0 N·m (10 – 60 kgf·cm, 9 – 53 in-lbs.) [21 stages]

Max. torque----- 10 N·m (102 kgf·cm, 89 in-lbs.)

Type of motor

DC magnet motor

Type of switch

Trigger switch with pushing button for forward and reverse rotation

changover (with brake)

Enclosure

Body---------------------Glassfiber reinforced polycarbonate resin (black)

and thermoplastic elastomer (green)

Battery ------------------Polycarbonate resin (black)

Charger----------------- ABS resin (black)

Battery Type of battery

Sealed cylindrical lithium-ion storage battery

(Type Nominal voltage

DC 10.8 V

BCL 1015) Nominal life

Charging/discharging: approximately 1000 times

Nominal capacity

1.5 Ah

Charging time

Approx. 40 minutes

(with Charger UC 10SFL at ambient temperature of 20 °C (68 °F))

Charging

temperature

0 °C – 50 °C (32 °F – 122 °F)

Charger

(Model UC 10SFL)

• Overcharge prevention system:

(1) Stop current detection

(2) Battery surface temperature detection (thermostat or therrmistor)

• Input capacity: 35 W

• The maximum allowable temperature of the Type BCL 1015 battery is

50 °C (122 °F).

• Indication method: Pilot lamp indicates the charging state.

• Pilot lamp: On-------------------- During charging

Off -------------------- Charging completed

Weight Net

Main body (including Type BCL 1015 battery) ------------ 0.8 kg (1.8 Ibs.)

Charger unit (including cord) 0.35 kg (0.8 Ibs.)

Gross DB 10DL (2LCSK) (including Type BCL 1015 battery) 3.0 kg (6.6 Ibs.)

Standard accessories

Charger (UC 10SFL) ---------------------------------------------------------------1

Battery (Type BCL 1015) ----------------------------------------------------------2

Phillips plus driver bit (No. 2) -----------------------------------------------------1

Case ------------------------------------------------------------------------------------1

SPECIFICATIONS

-5-

1. Specifications comparisons

(Superior specifications:

)

Maker HITACHI

Model name DB 10DL

B (EURO)

B (U.S.A.)

Steel

6 mm (1/4")

Drilling

Wood 18 mm (23/32") 18 mm (23/32”)

Wood screw 6 mm dia. x 38 mm (#14 x 1-1/2") 6 mm dia. (#14)

Max.

capacity

Screw

driving

Machine screw 6 mm (1/4") 6 mm (1/4”)

Rotation speed 0 - 400 min

-1

0 - 400 min

-1

Max. torque 10 N·m (102 kgf·cm) (89 in-lbs.) 18 N·m (183 kgf·cm) (160 in-lbs.)

Max. torque (hard)

(actually measured value)

24.7 N·m (252 kgf·cm)

(219 in-lbs.)

16.7 N·m

*1)

(170 kgf·cm)

(148 in-lbs.)

[21 stages] [10 stages]

Slip torque

1.0 – 6.0 N·m

10 – 60 kgf·cm

(9 – 53 in-lbs.)

2.0 – 6.0 N·m

20 – 60 kgf·cm

(18 – 53 in-lbs.)

Spindle lock function Equipped Equipped

LED light Equipped Equipped

Battery level warning lamp Equipped None

Soft-grip handle Equipped Equipped

Battery type Li-ion Li-ion

Nominal capacity 1.5 Ah 1.3 Ah

Nominal voltage 10.8 V 10.8 V

Battery

Charging time

40 min. (Model UC 10SFL) 30 min.

Overall length 147 mm (5-3/4") 166 mm (6-1/2")

Overall height 197 mm (7-3/4") 167 mm (6-1/2")

Dimensions

Width 48 mm (1-7/8") 49 mm (1-7/8")

Weight 0.8 kg (1.8 lbs.) 0.8 kg (1.8 lbs.)

*1): The clutch function is worked even at the drill mode setting.

*2): Charging time may vary depending on the type of charger to be used.

COMPARISONS WITH SIMILAR PRODUCTS

-6-

2. Drilling and fastening performance comparison per charge

(Superior specifications:

)

The above table shows an example of test data. The batteries used in this test are as follows:

Model DB 10DL: 1.5 Ah

B: 1.3 Ah

*: Number of machine screws fastened per charge

*1: Number of holes or fasteners per charge

The above table shows an example of test data obtained using the battery which is standard for this tool.

As actually measured values listed in the above table may vary depending on the sharpness of the drill bit,

workpiece hardness (particularly in wood materials), moisture content of wood, charging condition, operator

skill, etc. This data should be used as a comparative guide only.

Drilling

Type of work

Maker

Model

0 *200 *400 *600 *800

speed

0 100 200 300 400

(sec./pc.)

1.4

1.5

3.6

3.7

2.4

HITACHI

DB 10DL

3.5

38 mm (1-1/2")

142

146

131

141

157

196

T18 (11/16")

18 mm dia. (11/16")

Wood boring

merican

pine

Machine screw

6mm dia.

(

#14

)

ith pilot hole Ɏ4

merican

ine

Wood screw

merican

pine

38 mm

(

1-1/2"

)

Wood screw

3.8 mm dia.

(#7)

12 mm

(

15/32"

)

*576

*714

6 mm (1/4")

HITACHI

DB 10DL

HITACHI

DB 10DL

HITACHI

DB 10DL

Working capacity (*1)

-7-

1. Safety instructions

In the interest of promoting the safest and most efficient use of the Model DB 10DL cordless driver drill by

all of our customers, it is very important that at the time of sale, the salesperson carefully ensures that the

buyer seriously recognizes the importance of the contents of the Handling Instructions, and fully

understands the meaning of the precautions listed on the Caution Plate and Name Plate attached to each

tool.

A. Handling instructions

Salespersons must be thoroughly familiar with the contents of the Handling Instructions in order to give

pertinent advice to the customer. In particular, they must have a thorough understanding of the precautions

for use of the cordless tools which are different from those of ordinary electric power tools.

(1) Before use, ensure that the battery is fully charged.

New battery is not fully charged. Even if the battery was fully charged at the factory, long periods of

inactivity, such as during shipping, cause the storage battery to lose its charge. Customers must be

instructed to fully charge the battery prior to use.

(2) When charging storage battery, use only the exclusive Model UC 10SFL charger provided with

the tool.

Because of the designed rapid-charging feature (about 40 minutes), use of other battery chargers is

hazardous.

(3) Connect the charger to an AC power outlet only.

Use of any other power source (DC outlet, fuel powered generator, etc.) will cause the charger to

overheat and burn out.

(4) Do not use any voltage increasing equipment (transformer etc.) between the power source and

the charger.

If the charger is used with voltage higher than that indicated on the unit, it will not function properly.

(5) Conduct battery charging at an ambient temperature range of 0°C - 40°C (32°F - 104°F).

Special temperature sensitive devices are employed in the charger to permit rapid charging. Ensure that

customers are instructed to use the charger at the indicated ambient temperature range. At temperature

under 0°C (32°F) the thermostat will not function properly, and the storage battery may be overcharged.

At temperature over 40°C (104°F), the storage battery cannot be sufficiently charged. The optimum

temperature range is 20°C - 25°C (68°F - 77°F).

(6) The battery charger should not be used continuously.

At high ambient temperature, if over three storage batteries are charged in succession, the temperature

of the coils on the transformer will rise and there is a chance that the temperature fuse inserted in the

interior of the transformer will inadvertently melt. After charging one battery, please wait about 15

minutes before charging the next battery.

(7) Do not attempt to disassemble the storage battery or the charger.

Special devices, such as a thermostat, are built into the storage battery and the charger to permit rapid

charging. Incorrect parts replacement and/or wiring will cause malfunctions which could result in fire or

other hazards. Instruct the customer to bring these units to an authorized service center in the event

repair or replacement is necessary.

PRECAUTIONS IN SALES PROMOTION

-8-

(8) Disposal of the storage battery (Type BCL 1015)

Ensure that all customers understand that the Type BCL 1015 storage battery should be returned to the

Hitachi power tool sales outlet or the authorized service center when they are no longer capable of

being recharged or repaired. If thrown into a fire, the battery may explode.

B. Caution plate

(1) The following cautions are listed on the Name Plate attached to the Type DB 10DL main body.

[ For the U.S.A. and Canada ]

Warning

To reduce the risk of injury, user must read Instruction Manual.

Risk of fire, burn or explosion. Use only with battery BCL 1015.

AVERTISSEMENT

Afin de reduire le risque de blessures, I’utilisateur doit lire le mode d’emploi.

(2) The following cautions are listed on the Name Plate attached to the Type BCL 1015 storage battery.

[ For Europe ]

[ For the U.S.A. and Canada ]

(3) The following cautions are listed on the Name Plate attached to the Type UC 10SFL storage battery.

[ For the U.S.A. and Canada ]

-9-

2. Inherent drawbacks of cordless driver drills requiring particular

attention during sales promotion

The cordless driver drill offers many advantages; it can be used in places where no power source is

available, the absence of a cord allows easy use, etc. However, any cordless tool has certain inherent

drawbacks. Salespersons must be thoroughly familiar with these drawbacks in order to properly advise the

customer in the most efficient use of the tool.

A. Suggestions and precautions for the efficient use of the tool

(1) Use the cordless driver drill for comparatively light work.

Because they are battery driven, the output of the motor in cordless driver drills is rather low in

comparison with conventional electric power tools. Accordingly, they are not suitable for continuous

drilling of many holes in succession, or for drilling into particularly hard materials which creates a heavy

load. Salespersons should recommend conventional electric power tools for such heavy work.

(2) Do not insert a foreign object into body.

A foreign object inserted through a hole may cause a failure. Please instruct customers to never insert a

foreign object into body.

(3) Avoid "Locking" of the motor.

Locking of the motor will cause an overload current that could result in burning of the motor and/or rapid

deterioration of the battery. Salespersons should advise the customer to immediately release the switch

and stop operation if the motor becomes locked. (A jammed drill bit can be disengaged from the

workpiece material by setting the switch to reverse rotation, or by manually turning the main body of the

tool.)

(4) Variation in amount of work possible per charge

Although the nominal chargeable capacity of the storage battery used with the Model DB 10DL is 1.5 Ah,

the actual capacity may vary within 10% of that value depending on the ambient temperature during use

and charging, and the number of times the batteries have been recharged. It should be noted that other

factors which may have a bearing on the amount of work possible per charge are the working conditions

(ambient temperature, type and moisture content of the workpiece, sharpness of the drill bit, etc.) and

the operational skill of the user.

B. Suggestions and precautions for the efficient use of the charger and storage

battery

If the Type BCL 1015 storage battery is exposed to direct sunlight for an extended period or if the tool has

just been operated for a long time, charging may not be possible if the temperature of the battery is above

50°C (122°F). In such a case, the customer should be advised to place the battery in a shaded area with a

good airflow, and allow sufficient cooling before recharging. This phenomenon is common to all existing

batteries and chargers which employ temperature sensitive overcharge protection devices. The cooling

time required before recharging can be accomplished varies from a few minutes to about 40 minutes,

depending on the load, duration of use, and ambient temperature.

-10-

Be sure to remove the storage battery (BCL 1015) from the main body before servicing. Inadvertent

triggering of the switch with the storage battery connected will result in danger of accidental turning of the

motor.

1. Precautions in disassembly and reassembly

The [Bold] numbers in the description below correspond to the item numbers in the Parts List and the

exploded assembly diagram for the Model DB 10DL.

1. Removal of the housing

Remove the seven Tapping Screws (W/Flange) D3 x 16 (Black) [36]. Holding the battery chamber of

Housing (A).(B) Set [31], open Housing (A).(B) Set [31] gently. After opening Housing (A).(B) Set [31], all

the internal parts can be removed separately or in an assembled status. Lift the Motor [30] and the Clutch

Dial [6] from Housing (A).(B) Set [31]. Then all the internal parts can be removed easily. The internal parts

are separated into the drive unit (Gear Box Ass’y [1]), power supply unit (Motor [30], DC-Speed Control

Switch [35] and Controller (B) [39]) and Pushing Button (A) [34].

2. Removal of the drive unit from the power supply unit

Hold the Motor Spacer [29] and the Motor [30] of the Gear Box Ass’y [1] and pull it in the axial direction.

Then the drive unit can be removed from the power supply unit.

3. Disassembly of the drive unit

(a) Disassembly of the deceleration mechanism

Twist the Motor Spacer [29] counterclockwise to remove it from the Gear Case [12]. Remove Washer

(A) [28] then remove the First Ring Gear [27], Planet Gear (A) Set (3 pcs.) [26] and Pinion (B) [25] in

order. Remove the two Needles [13] inserted through the side of the Gear Case [12]. Remove Washer

(B) [24], Planet Gear (B) Set (3 pcs.) [23], Pinion (C) [22], Washer (C) [21], Planet Gear (C) Set (3 pcs.)

[17], Carrier [19], Ring Gear [20], Needle Roller Set (6 pcs.) [16], six Steel Balls D4 [15], Pin Set (6

pcs.) [14] and Lock Ring [18] in order.

NOTE: Do not lose the small parts. Especially be careful not to lose the Needle Roller Set (6 pcs.)

[16], six Steel Balls D4 [15] and Pin Set (6 pcs.) [14] because they are apt to roll.

(b) Removal of guide sleeve (A)

Remove the Retaining Ring [2], Washer (D) [3], Guide Spring [4] and Guide Sleeve (A) [5] in order

following the procedure shown in Fig. 1. One side of the gap of the Retaining Ring [2] is raised. Slowly

raise the other side of the gap with a small flat-blade screwdriver to remove the Retaining Ring [2].

Avoid quickly raising the Retaining Ring [2] or it may fly out forcefully. Do not lose the Steel Ball D3.5

[11] in the socket hole.

Remove the Clutch Dial [6] and the Click Spring [7]. (Remove Guide Sleeve (A) [5].)

Turn the Nut [8] counterclockwise and remove it from the Gear Case [12]. Then remove the Spring [9]

and Washer (D) [10] in order.

NOTE: Do not remove the Gear Case [12].

Disassembl

REPAIR GUIDE

-11-

Fig. 1-1 Hold the body and adjust the gap of the

Retaining Ring [2] to the groove of socket, then insert a

small flat-blade screwdriver into the groove at an angle.

Guide Sleeve (A) [5]

Socket

Retaining Ring [2]

Small flat-blade

screwdriver

Washer (D)

[3]

Fig. 1

4. Disassembly of the power supply unit

Unsolder the Internal Wire (Black) [32] and the Internal Wire (Red) [33] of the Motor [30] with a soldering

iron and disconnect them from the Motor [30]. Disconnect the Internal Wire (Black) [32] and the Internal

Wire (Red) [33] of the Motor [30] from the DC-Speed Control Switch [35] with a soldering iron in the same

manner.

The internal wires of the DC-Speed Control Switch [35] (two LEDs are connected with the internal wires)

and the Controller (B) [39] are soldered to each terminal.

Unsolder the internal wire (red) ((B+) terminal side of the DC-Speed Control Switch [35]), internal wire

(white) ((B-) terminal side of the DC-Speed Control Switch [35]) and internal wire (blue) of the DC-Speed

Control Switch [35] with a soldering iron and disconnect them from the DC-Speed Control Switch [35].

Before unsoldering the internal wire (blue), be sure to remove the heat shrinkable tube.

NOTE: Do not remove the DC-Speed Control Switch [35] and the Controller (B) [39].

Fig. 1-2 Press down Washer (D) [3] with the small

flat-blade screwdriver.

Fig. 1-3 Slide the small flat-blade screwdriver under

one side of the gap of the Retaining Ring [2].

Fig. 1-4 Slowly raise the Retaining Ring [2] using the

end face of Guide Sleeve (A) [5] as a fulcrum.

-12-

Fig. 2

Motor Spacer [29]

Internal Wire (Red) [33]

Internal Wire (Black) [32]

Internal wire (black)

Internal wire (white)

Terminal on the switch (B

) side

Controller (B) [39]

Motor [30]

DC-Speed Control Switch [35]

Internal wire (blue)

Internal wire (red)

Terminal on the switch (B+) side

Protect the soldered portion with

the insulating tape.

Reassembly can be accomplished by following the disassembly procedure in reverse. However, special

attention should be given to the following items.

1. Wiring of the power supply unit

(a) Perform wiring according to the wiring diagram (Fig. 2). Be careful of the color of the internal wires and

the terminals to be soldered.

(b) Be careful of the polarity of the Motor [30] when soldering the Internal Wire (Black) [32] and the Internal

Wire (Red) [33] to the Motor [30]. The (+) terminal of the Motor [30] has a red mark for distinction

(Fig. 3).

the Internal Wire (Red) [33] to the terminals of the DC-Speed Control Switch [35] (Fig. 4 (A)).

(d) Be careful of the color of the internal wires and the soldering direction when mounting Controller (B) [39]

to the DC-Speed Control Switch [35]. Solder the internal wire (blue) of the DC-Speed Control Switch

[35] to the internal wire (black) of Controller (B) [39]. After soldering, protect the soldered portion with

the insulating tape (Fig. 4 (B), (C)).

Reassembl

-13-

Fig. 3

Fig. 4

(+) terminal

Red mark

(

) terminal

Internal wire (red) of

Controller (B) [39]

Internal wire (white)

Internal wire (red)

Internal wire (black) of Controller (B) [39]

Protect the soldered portion with the insulating tape.

Internal wire (blue)

Internal wire (black)

Internal wire (red) of Controller (B) [39]

Internal wire (white) of Controller (B) [39]

Internal wire (red)

(A)

(B) (C)

-14-

Fig. 6

Fig. 5

Spring [9]

Y surface

Nut [8]

Gear Case [12]

Z surface

Spring [9]

Washer (D) [10]

Y surface Z surface

Gear Case [12]

Nut [8]

Washer (D) [10]

Notch (3 pcs.)

Gear Case [12]

Protrusion

Click Spring [7]

2. Reassembly of the drive unit

(a) Mount Washer (D) [10] and the Spring [9] to the Gear Case [12] in order.

(b) Screw the Nut [8] in aligning its protrusion with the register mark on the Gear Case [12].

Turn the Nut [8] about 1 turn clockwise so that the register mark on the Nut [8] is aligned with the

surface of the Gear Case [12] (Fig. 5).

Case [12] with the protrusion of the Click Spring [7]. Mount the Click Spring [7] in the proper direction as

shown in Fig. 6.

Protrusion of the Nut [8]

Gear Case [12].

Screw-in start position

Screw-in end position

-15-

Flat portion of

the Lock Ring [18]

Protrusion

Opening of the Gear Case [12]

Fig. 8

3. Reassembly of the manual tightening

mechanism

(a) Mount the Lock Ring [18] to the Gear Case [12]

so that the protrusion of the Lock Ring [18] aligns

with the concave portion of the Gear Case [12].

At this time, mount the Lock Ring [18] so that its

flat portion faces the opening of the Gear Case

[12] as shown in Fig. 7.

(b) Mount the Needle Roller Set (6 pcs.) [16].

NOTE: Do not apply grease to the Lock Ring [18]

and the Needle Roller Set (6 pcs.) [16].

Otherwise, the manual tightening

mechanism may operate poorly.

4. Reassembly of the deceleration mechanism

(a) Apply grease (Hitachi Motor Grease No. 29) to the engaging portions of each gear, Pin Set [14] and the

contacting surface of the Ring Gear [20] with the Steel Ball D4 [15] properly.

(b) Mount the parts from the Pin Set (6 pcs.) [14], Steel Ball D4 [15], Ring Gear [20], Carrier [19] and

Planet Gear (C) Set [17] to the part assembled in the above (3). Then mount the parts up to Washer (A)

[28] in order (Fig. 8).

Mount the Pin Set (6 pcs.) [14] first then mount the Steel Ball D4 [15].

Pay attention to the mounting direction of the Ring Gear [20], Carrier [19], Pinion (C) [22] and Pinion

(B) [25] (Fig. 8).

Check that the Needle [13] is mounted between Washer (B) [24] and the First Ring Gear [27].

Fig. 7

Needle Roller Set (6 pcs.) [16]

Lock Ring [18]

Flat portion

Stepped portion

Steel Ball D3.5 [11]

Gear Case [12]

Needle [13] Pin Set (6 pcs.) [14]

Steel Ball D4 [15]

Needle Roller Set [16]

Planet Gear (C) Set [17]

Lock Ring [18] Carrier [19]

Ring Gear [20]

Washer (C) [21]

Pinion (C) [22]

Planet Gear (B) Set [23]

Washer (B) [24]

Pinion (B) [25]

Planet Gear (A) Set [26]

First Ring Gear [27]

Washer (A) [28]

-16-

Fig. 9

Fig. 10

Fig. 11

5. Mounting the power supply unit to the drive unit

(a) Mount the Motor Spacer [29] to the Motor [30] fitting its cylindrical protrusion in the hole of the Motor

[30] as shown in Fig. 9.

(b) Fit the protrusions of the Motor Spacer [29] in the concave portions of the Gear Case [12] and turn it

clockwise to secure. Pay attention to the mounting direction of the Motor [30] and the Gear Case [12]

when mounting the Motor [30] to the Gear Box Ass’y [1]. Mount the Motor [30] so that the red mark on

the Motor [30] is positioned to the top when mounted to the housing (Fig. 10).

6. Mounting the clutch dial

The Nut [8] has three protrusions. One of these protrusions is wider than the others. The Clutch Dial [6]

has three concave portions inside. One of these concave portions is wider than the others. Mount the Nut

[8] to the Clutch Dial [6] aligning the wider protrusion of the Nut [8] with the wider concave portion of the

Clutch Dial [6]. The wider concave portion in the Clutch Dial [6] is at the position indicated with "1" on the

outside of the Clutch Dial [6] (Fig. 11).

Cylindrical protrusion

Motor Spacer [29]

Hole

Motor [30]

Do not insert in these holes.

Motor [30]

Motor Spacer [29]

Gear Case [12]

Red mark

Wider concave portion

Protrusion

Nut [8]

Concave portion

Wider protrusion

Clutch Dial [6]

Indicated with “1”

Protrusion

Concave portion

Protrusion

Cylindrical protrusion

-17-

Fig. 12

Fig. 13

7. Reassembly of the housing

(a) Mount the LED to housing (A) of Housing (A).(B) Set [31] without twisting the LED internal wire attached

to the DC-Speed Control Switch [35]. Put the LED connected with the internal wire (red) in the space

provided on the DC-Speed Control Switch [35] side and the LED connected with the internal wire (blue)

in the space provided on the upper side of housing (A) of Housing (A).(B) Set [31]. Mount these two

LEDs positioning the chamfered side as shown in Fig. 12.

(b) Mount the assembly of the Motor [30] and the Gear Box Ass’y [1] to housing (A) of Housing (A).(B) Set

[31]. At this time, fit the protrusions of the Gear Case [12] and the Motor Spacer [29] in the concave

portions of housing (A) of Housing (A).(B) Set [31] and the protrusion of the Clutch Dial [6] in the

concave portion of housing (A) of Housing (A).(B) Set [31]. Align the two Needles [13] protruded from

the Gear Case [12] with the two holes of housing (A) of Housing (A).(B) Set [31]. Be careful not to

pinch the internal wires of the LED (Fig. 13).

Internal wire (blue)

Space for the LED

Housing (A).(B) Set [31]

LED light

Chamfered side

LED

Chamfered side

LED

Internal wire (red)

A-A

B-B

Clutch Dial [6] mounting position

Gear Case [12] mounting position

Needle [13] mounting position

Motor Spacer [29] mounting position

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Hitachi DB10DL Technical Data And Service Manual

Brand: Hitachi

Model: DB10DL

Category: Power screwdrivers

Type: Technical Data And Service Manual

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DB 10DL

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Hitachi DB10DL Technical Data And Service Manual

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Hitachi DB10DL Technical Data And Service Manual

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