Hitachi CR 12DA Bedienungsanleitung

PRODUCT NAME

10.8 V Cordless Reciprocating Saw

Model

CR 12DA

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

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

• Disassembly -------------------------------------------------------------------------------------------------- 1

• Reassembly -------------------------------------------------------------------------------------------------- 3

• Tightening torque ------------------------------------------------------------------------------------------- 6

• Checking after reassembly ------------------------------------------------------------------------------- 6

• No-load current value -------------------------------------------------------------------------------------- 6

• Connecting diagram ---------------------------------------------------------------------------------------- 6

CONTENTS Page

CONFIDENTIAL

Jul. 2020

Overseas Sales Management Dept.

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-1-

Fig. 2 • For China, UAE, Thailand, Singapore, Malaysia, and India

[14]

[7]

[10]

[5]

[4]

[1]

WARNING: Be sure to remove the battery from the main body before starting repair or maintenance

work. If the switch is activated inadvertently with the battery still mounted on the main

body, the motor may turn unexpectedly and could cause serious injury.

1. Precautions on disassembly and reassembly

[Bold] numbers in the description below correspond to the item numbers in the parts list and exploded

assembly diagram for the Model CR 12DA.

First, be sure to remove the saw blade from the main body to prevent damage to the cutting edges of the

saw blade and avoid personal injury due to the saw blade.

1. Removal of the base

(1) Remove the base while pressing the base lock button.

2. Disassembly of housing (A).(B) set

(1) Loosen nine Tapping Screws (W/Flange) D3 x 16 [4] and remove housing (B) of Housing (A).(B) Set

[14].

(2) Remove the DC-Speed Control Switch [10], Pushing Button (A) [7], Gear Box [1], and Locking Knob

[5] from housing (A) of Housing (A).(B) Set [14].

REPAIR GUIDE

Disassembly

Fig. 1

Base lock button

Base

Housing (A)

Housing (B)

[6]

[2]

Motor

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-2-

Fig. 4 • Removal of the battery terminal

[14]

[7]

[10]

[5]

[4]

[1]

Fig. 3 • For Europe and UK

[8]

3. Disassembly of the power supply unit

(1) To disconnect the red and black internal wires of the motor in the Gear Box [1] from the DC-Speed

Control Switch [10], use a soldering iron to unsolder them.

NOTE: Do not disassemble the DC-Speed Control Switch [10].

(2) Remove the Battery Terminal [12] from the DC-Speed Control Switch [10]. Pull the internal wire toward

“A” as shown in the figure below while pressing the claw of the faston terminal to remove the faston

terminal.

Faston terminal

Claw

[12]

Housing (A)

Housing (B)

[9]

Motor

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Fig. 5 • Connecting the internal wires to the battery terminal

Perform reassembly by reversing the disassembly procedure, but note the following.

1. Reassembly of the power supply unit and its vicinity

NOTE: Perform wiring correctly according to Figs. 6 and 9 being careful of the internal wiring and

the connecting directions.

(1) Connect each internal wire to the Battery Terminal [12] securely until the faston terminal clicks into place.

• Insert the red internal wire into the "+" terminal of the Battery Terminal [12].

• Insert the blue internal wire into the "D" terminal of the Battery Terminal [12].

• Insert the black internal wire into the "-" terminal of the Battery Terminal [12].

• Insert the green internal wire into the "LD" terminal of the Battery Terminal [12].

• After inserting the internal wires, check that the internal wires are securely connected by pulling the

internal wires lightly.

(2) Perform the following steps (a) and (b) being careful of the colors of the internal wires and the terminals

when soldering the internal wires to the motor and the DC-Speed Control Switch [10]. (See Fig. 6.)

(a) Solder one end of the internal wire (red) to the “+” terminal (red marking side) of the motor and

connect the other end to “M1” terminal of the DC-Speed Control Switch [10].

(b) Solder one end of the internal wire (black) to the “-” terminal (opposite side of the red marking side)

of the motor and connect the other end to “M2” terminal of the DC-Speed Control Switch [10].

(3) Push the internal wires of the DC-Speed Control Switch [10] into the ribs and grooves of housing (A) to

prevent the internal wires from being caught between housings (A) and (B). (See Figs. 7 and 8.)

(4) Fit the protrusion of the direction selector lever on the top of the DC-Speed Control Switch [10] into the

hole on Pushing Button (A) [7] and mount it to housing (A).

NOTE: If the contacts of the Battery Terminal [12] with the battery are covered with black oxide

or not plated, the contacts may heat up, possibly resulting in breakdown of the battery or

the tool main body. In such a case, replace the Battery Terminal [12] with new one.

Reassembly

Internal wire (red)

Internal wire (blue)

(“+” terminal)

(“D” terminal)

Internal wire (green)

(“LD” terminal)

Internal wire (black)

(“-” terminal)

[12]



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Fig. 6 • Reassembly of the power supply unit and its vicinity

Motor

Solder.

LED light

[10]

40°±10°

“-” terminal

Red marking

10°±10°

“+” terminal

Internal wire (black)

Internal wire (red)

Internal wire (black)

Internal wire (red)

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Fig. 7

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

Fig. 8

• Reassembly of housing (A).(B) set (2)

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

(1) Mount the Locking Knob [5] to housing (A).

(2) Put the Gear Box [1], Pushing Button (A) [7], and DC-Speed Control Switch [10] together and mount it

to housing (A).

NOTE: • Fit the internal wire of the LED light in the internal wire guide grooves in housing (A).

• Fit the black and red internal wires in the internal wire guide grooves in housing (A).

Fit the internal wire of the

LED light in the internal wire

guide grooves.

Fit the black and red internal wires

in the internal wire guide grooves.

[5]

Bend the motor terminal.

Bend the red internal wire and

place it under the motor terminal.

Red internal wire

Place the black internal wire

under the red internal wire.

20°±10°

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• Tapping Screw (W/Flange) D3 x 16 (Black) [4] ························· 1.3±0.3 N•m {13±3 kgf•cm}

Check the following after reassembly.

(1) Check that the operation of the DC-Speed Control Switch [10] and Pushing Button (A) [7] is smooth and

normal.

(2) Check that the LED light turns on while pulling the trigger of the DC-Speed Control Switch [10].

(3) Check that the speed changes properly by pulling the trigger of the DC-Speed Control Switch [10].

(4) Check that the blade is securely attached.

The no-load current value must be 5.0 A ± 1.0 A after running for 5 minutes or longer with a fully charged

DC 12 V battery.

Perform wiring as illustrated in the diagram below. Be sure to connect the internal wires correctly.

If incorrectly connected, the motor may not turn or other problems could occur.

Checking after reassembly

Tightening torque

No-load current value

Connecting diagram

Fig. 9

• Connecting diagram

Battery terminal

LED light

DC-speed

control switch

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M O D E L

Rev.1

CR12DA

679

501 502

509

505

507

508

506

503

504

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ITEM CODE NO.

NO. NO. USED

1 376375 GEAR BOX 1

*2 376553 INTERNAL WIRE (BLACK) L110 1 FOR CHN, UAE, THA, SIN, MAL, IND

3 NAME PLATE 1

4 313687 TAPPING SCREW (W/FLANGE) D3 X 16 (BLACK) 9

5 376377 LOCKING KNOB 1

*6 376552 INTERNAL WIRE (RED) L105 1 FOR CHN, UAE, THA, SIN, MAL, IND

7 329548 PUSHING BUTTON (A) 1

*8 375921 SUPPORT (D) 1 FOR EUROPE, GBR

*9 376554 INTERNAL WIRE FERRITE SET 1 FOR EUROPE, GBR

10 376376 DC-SPEED CONTROL SWITCH 1

11 327002 LOCK NUT M4 (BLACK) 2

12 374387 BATTERY TERMINAL 1

13 374954 BATTERY BSL 1225M (EUROPE) 2 INCLUD. 502

14 376374 HOUSING (A).(B) SET 1

501 CHARGER (MODEL UC12SL) 1

502 374778 BATTERY COVER 1

503 958185 SABER SAW BLADES NO. 5 (5 PCS.) 1

504 318617 SABER SAW BLADES NO. 107 150L P.24 (5 PCS.) 1

505 336471 CASE ASS'Y (STACKABLE 2) 1 INCLUD. 506-508

506 336472 LATCH 4

507 336473 HANDLE 1

508 336474 HINGE 2

509 376550 INNER TRAY 1

601 959611 SABER SAW BLADES NO. 4 (5 PCS.) 1

602 318611 SABER SAW BLADES NO. 101 150L P.10 (5 PCS.) 1

603 318612 SABER SAW BLADES NO. 102 228L P.10 (5 PCS.) 1

604 318613 SABER SAW BLADES NO. 103 150L P.14 (5 PCS.) 1

605 318614 SABER SAW BLADES NO. 104 228L P.14 (5 PCS.) 1

606 318618 SABER SAW BLADES NO. 108 228L P.24 (5 PCS.) 1

607 324818 SABER SAW BLADES NO. 109 150L P.18 (5 PCS.) 1

608 324819 SABER SAW BLADES NO. 110 228L P.18 (5 PCS.) 1

609 318619 SABER SAW BLADES NO. 121 305L P.6 (5 PCS.) 1

610 318620 SABER SAW BLADES NO. 131 305L P.10/14 (5 PCS.) 1

611 318621 SABER SAW BLADES NO. 132 203L (5 PCS.) 1

612 370683 CURVED BLADES NO. 141(S)150L P.14 (3 PCS.) 1

613 370684 CURVED BLADES NO. 142(S)200L P.14 (3 PCS.) 1

614 370685 CURVED BLADES NO. 143(S)250L P.14 (3 PCS.) 1

615 371902 CURVED BLADES NO. 158 200L P.8 (3 PCS.) 1

DESCRIPTION REMARKS

STANDARD ACCESSORIES

OPTIONAL ACCESSORIES

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