Hitachi WH 10DAL Manual de usuario

PRODUCT NAME

Hitachi 10.8 V Cordless Impact Driver

Model WH 10DAL

International Sales Division W

REPAIR GUIDE ---------------------------------------------------------------------------------------------------------------- 1

1. Precautions on disassembly and reassembly------------------------------------------------------------- 1

2. Precautions on disassembly and reassembly of the battery charger ------------------------------- 7

STANDARD REPAIR TIME (UNIT) SCHEDULES -------------------------------------------------------------------- 8

CONTENTS Page

LIST No.

WH 10DAL: J882

Jun. 2014

-1-

• Removal of guide sleeve (C)

WARNING: Be sure to remove the Type BCL 1015 battery from the main body before starting repair

or maintenance work. Because the tool is cordless, inadvertently activating the switch

with the battery left in the main body will start the motor rotating unexpectedly, and

could cause serious injury.

1. Precautions on disassembly and reassembly

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

assembly diagram for the Model WH 10DAL.

1. Removal of guide sleeve (C)

(1) Follow the procedure shown in Figs. 1 to 4 below to remove the Retaining Ring [2], Washer (F) [3],

Guide Spring (C) [4] and Guide Sleeve (C) [5] in this order. Avoid quickly raising the Retaining Ring

[2]; otherwise, it may suddenly spring out. Be sure not to lose the two Steel Balls D3.175 [8] in the

Anvil [9].

Hold the body and adjust the gap of the Retaining Ring [2]

to the groove of the Anvil [9], then insert a small flat-blade

screwdriver into the groove at an angle.

Press down Washer (F) [3] with the small flat-blade

screwdriver.

Slide the small flat-blade screwdriver under one side of the

gap of the Retaining Ring [2].Slowly raise the Retaining Ring [2] using the end face of

Guide Sleeve (C) [5] as a fulcrum.

Disassembly

REPAIR GUIDE

Small flat-blade screwdrive

Anvil [9]

Retaining Ring [2]

Washer (F) [3]

Gap of the Retaining

Ring [2] Guide Sleeve (C) [5]

Fig. 1 Fig. 2

Fig. 3 Fig. 4

-2-

Fig. 5 • Disassembly of the hammer assembly

Raised face of hammer

Steel Balls D5.556 [10]

Steel ball guide groove

indle

[

]

Push down.

Washer (S) [14]

J-297 base for washer (S)

Hammer Spring (E) [13]

Stopper (A) [15]

Top of spindle cam

Hammer [11]

Spindle [16]

2. Removal of the exterior parts

(1) Insert a small flat-blade screwdriver between the Front Cap [6] and Hammer Case [7], and then

remove the Front Cap [6] from the Hammer Case [7].

3. Removal of housing (A).(B) set

(1) Remove the eight Tapping Screws (W/Flange) D3 x 16 (Black) [35] to remove housing (B) from the

Housing (A).(B) Set [29].

(2) Remove the Hammer Case [7], hammer assembly, Ring Gear [21], Motor DC 12V [23] and Switch

Terminal Set [33] as one unit. Remove Pushing Button (A) [32].

4. Disassembly of the hammer assembly

(1) Mount the hammer assembly onto the J-297 base for washer (S) (a special tool). With a hand press,

push down the top of the Spindle [16] to compress Hammer Spring (E) [13]. In this position, remove

Stopper (A) [15] with a small flat-blade screwdriver, and then release the hand press.

(2) Remove the hammer assembly from the J-297 base for washer (S) and support the end surface of the

Spindle [16]. With a hand press, push down either of the raised faces of the Hammer [11] to compress

Hammer Spring (E) [13]. In this position, extract the two Steel Balls D5.556 [10] from the cam grooves

of the Spindle [16] and Hammer [11] with a small flat-blade screwdriver.

(3) Slowly release the hand press and lift the Hammer [11] and Washer (S) [14] together to extract both

from the Spindle [16]. Remove Hammer Spring (E) [13].

5. Disassembly of the switch terminal set

Disconnect the internal wires (red and black) coming from the Motor DC 12V [23] from the Switch

Terminal Set [33] by unsoldering.

NOTE: Do not remove the switch and controller from the Switch Terminal Set [33].

-3-

Fig. 6 • Reassembly of the power supply unit (1)

Perform reassembly by reversing the order of the disassembly procedure. However, special attention

should be given to the following items.

1. Reassembly of the power supply unit

NOTE: Perform wiring according to Figs. 6 and 7 being careful of the internal wiring and the

connecting direction.

(1) Solder the internal wires to the motor and the DC switch according to the following steps (a) and (b)

being careful of the soldering terminals and color of internal wires. (See Figs. 6 and 7.)

(a) Solder the red internal wire of the Internal Wire Ferrite Set [30] to the positive side (red marked

side) of the Motor DC 12 V [23] and the M1 terminal of the DC switch.

(b) Solder the black internal wire of the Internal Wire Ferrite Set [30] to the negative side (opposite to

the red marked side) of the Motor DC 12 V [23] and the M2 terminal of the DC switch.

(2) Push the internal wires of the Switch Terminal Set [33] in the ribs and grooves of housing (A) to

prevent the internal wires from being caught. (See Figs. 6 and 7.)

(3) Fit the protrusion of the forward/reverse changeover lever of the Switch Terminal Set [33] in the hole of

Pushing Button (A) [32], and then mount it to housing (A).

NOTE: Black oxide or separated plating on terminal support contacts to be connected to the

battery will increase the temperature of the contacts and damage the battery or driver body.

Replace the Switch Terminal Set [33] with a new one.

Reassembly

Motor DC 12 V [23]

Internal Wire Ferrite Set [30]

Switch Terminal Set [33]

DC switch

Battery terminal LED light

(40)

(35)

Black internal wire

Red internal wire

Red mark

Positive side

Negative side

Red internal wire

Black internal wire

-4-

Fig. 8 • Reassembly of the hammer assembly (1)

Fig. 7 • Reassembly of the power supply unit (2)

Contact surface with the

Motor DC 12 V [23] Ring Gear [21] Packing (A) [22]

2. Reassembly of the hammer assembly

(1) Put Washer (S) [14] onto the shaft of the Spindle [16] and mount the Hammer [11] containing the

twenty-eight Steel Balls D3.175 [8], Washer (J) [12] and Hammer Spring (E) [13] to the Spindle [16].

(2) Align the top of the cam groove on the Spindle [16] with the steel ball guide groove on the Hammer

[11]. Press down either of the raised faces of the Hammer [11] with a hand press to compress

Hammer Spring (E) [13] until the end surface of the hammer contacts the flange of the Spindle [16].

(3) Insert the two Steel Balls D5.556 [10] into the steel ball guide groove. Confirm that the Steel Balls

D5.556 [10] are properly inserted in the cam groove. Then release the hand press.

(4) Mount the hammer assembly onto the J-297 base for washer (S). With a hand press, push down the

top of the Spindle [16] to compress Hammer Spring (E) [13]. In this condition, mount Stopper (A) [15]

onto the spindle shaft, and then release the hand press.

(5) Insert the tip of the Spindle [16] into the Anvil [9] and cover it with the Hammer Case [7].

(6) Fit Packing (A) [22] onto the contact surface with the Motor DC 12 V [23] of the Ring Gear [21], by

aligning the center hole and the cross-shaped portion.

Put the internal wires between

the ribs of housing (A).

Battery terminal of the

Switch Terminal Set [33]

Housing (A).(B) Set [29]

Convex portion

Concave portion

-5-

Fig. 9 • Reassembly of the hammer assembly (2)

Fig. 10 • Reassembly of housing (A).(B) set (1)

Ring gear ribs

Hammer case ribs

Apply silicone rubber to the shaded areas.

Housing (A) Housing (B)

(7) Confirm that the Spindle [16] is inserted into Washer (G) [19]. Mount the Ring Gear [21] so that its ribs

are perpendicular to the ribs of the Hammer Case [7], while being careful of meshing between the Idle

Gear [17] of the hammer assembly and the Ring Gear [21].

(8) Mount Packing (A) [22] to the Ring Gear [21]. Then check that the Motor DC 12 V [23] turns smoothly.

If not, the gears are meshing improperly. Check the meshing condition.

3. Reassembly of housing (A). (B) set

(1) Apply silicone rubber (Three Bond 1211) to the shaded areas shown in Fig. 10 before mounting the

parts to housing (A).

(2) Mount a unit of the Hammer Case [7], Ring Gear [21] (including the Motor DC 12V [23]) and Switch

Terminal Set [33] into housing (A).

(3) Pay attention to the following when mounting:

• Mount the Hammer Case [7] to the housing so that the protrusion of the Hammer Case [7] (for

locking) contacts the concave portion of the housing as shown in Fig. 10.

• Confirm that the Hammer Case [7] is mounted to the housing properly. If the Hammer Case [7] is not

fitted in the specified groove of the housing or the ribs of the Ring Gear [21] are not perpendicular to

the ribs of the Hammer Case [7], properly remount the Hammer Case [7]. Be sure to properly mount

the Hammer Case [7] to the housing to prevent it from slipping off in the axial direction.

(4) Fit the convex portion of the battery terminal of the Switch Terminal Set [33] in the concave portion of

Housing (A).(B) Set [29], and fit the convex portion of Housing (A).(B) Set [29] in the concave portion

of the battery terminal of the Switch Terminal Set [33]. (See Fig 7.)

(5) Apply silicone rubber (Three Bond 1211) to housing (B) in the same area as for housing (A). Mount

housing (B) and secure it with the eight Tapping Screws (W/Flange) D3 x 16 (Black) [35]. Use a cloth

to wipe off all jammed-out silicone rubber (Three Bond 1211) on the housing.

-6-

Fig. 11 • Reassembly of housing (A).(B) set (2) Fit the Hammer Case [7] in housing (A) securely.

Hammer Case [7]

Protrusion (for locking)

Fit the protrusion of housing (A) in the notch

of the Motor DC 12 V [23] (for locking).

Fit the protrusion of the Hammer Case [7] (for

locking) in the concave portion of housing (A).

Fig. 12 • Mounting the guide sleeve

4. Mounting the exterior parts

Cover the assembled housing with the Front Cap [6].

5. Mounting the guide sleeve

Insert one Steel Ball D3.175 [8] into the hole of the Anvil

[9]. Mount Guide Sleeve (C) [5], Guide Spring (C) [4] and

Washer (F) [3] in sequence. Mount the Retaining Ring [2]

into the groove of the anvil using J-339 jigs (E) and (F) for

retaining rings.

NOTE: Be sure to replace the Retaining Ring [2] with

a new one because it may be deformed and

Guide Sleeve (C) [5] could come off if the

deformed Retaining Ring [2] is used again.

Push down.

J-339 jig (E)

for retaining rings

Retaining Ring [2]

Washer (F) [3] J-339 jig (F)

for retaining rings

-7-

ATTOLUB MS No. 2

• Pinion tooth flanks of the Motor DC 12 V [23], Ring Gear [21] and Idle Gear [17]

HITACHI MOTOR GREASE No. 29

• One Steel Ball D3.175 [8]

• Sliding section between the Anvil [9] and Guide Sleeve (C) [5]

MOLUB-ALLOY 777-1

• 8 mm diameter hole of the Anvil [9], sliding section between the Anvil [9] and the metal, oil groove,

and upper surface of the claw

• Two Steel Balls D5.556 [10]

• Cam groove, oil groove and claw of the Hammer [11]

• Cam groove and sliding section of the Spindle [16]

• 5 mm diameter hole of Idle Gear [17]

• All around Needle (C) [18]

• Twenty-eight Steel Balls D3.175 [8]

• Tapping Screw (W/Flange) D3 x 16 (Black) [35] ---------------------------- 1.5 ± 0.4 N•m (15 ± 4 kgf•cm)

Check the following after reassembly:

(1) Confirm that the switching operation is smooth and the Model WH 10DAL can start, stop, change

speed and perform forward/reverse operation reliably.

(2) Confirm that the LED light goes on when the switch is turned on.

(3) Confirm that the rotation direction of the anvil coincides with the push-on side of pushing button (A).

(When pushing button (A) is turned to the (R) side, the rotation direction of the anvil should be

clockwise as viewed from behind.)

No-load current: 4.0 ± 1 A (DC 12.2 V [equivalent to the voltage of a fully charged battery])

2. Precautions on disassembly and reassembly of the battery charger

Refer to the Service Manual for precautions on disassembly and reassembly of the Model UC 10SL2

charger.

Application of lubricant

Screw tightening torque

Checking after reassembly

No-load current

-8-

MODEL Variable

Fixed 10 20 30 40 50 60 min.

WH 10DAL

General assembly

Switch

Terminal

Set

Motor

DC 12 V

Hammer

Case

Anvil

Ring Gear

Housing

(A).(B) Set

Hammer

Steel Ball

D5.556

Hammer

Spring (E)

Spindle

Idle Gear

Needle (C)

Ball Bearing

(6803VV)

Work Flow

Guide

Sleeve

Ass’y

STANDARD REPAIR TIME (UNIT) SCHEDULES

Model WH 10DAL

CORDLESS IMPACT DRIVER

LIST NO. J882

2014·6·26

(E1)

501 502 503

234

8910

11 8

14 15

504

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