Makita BTW104, BTW074 User Manual

ECHNICAL INFORMATION

PRODUCT

P 1/ 15

Models No.

Description

BTW074, BTW104

Cordless Impact Wrench

CONCEPT AND MAIN APPLICATIONS

These cordless impact wrenches for manufacturing industry as the successors of BTW072 series models. Their main features are:

• Extra compact design with a short overall length of 144mm (5-5/8")*

• Powered by our new 14.4V Li-ion batteries with battery fuel gauge:

BL1415NA (1.5Ah)/ BL1415NP (1.5Ah)/ BL1430A (3.0Ah)/ BL1430AP (3.0Ah)

• Automatic impact stop system to avoid under-tightening and

over-tightening

• Torque stabilization system to stabilize the torque of each fastening

• Automatic battery shut-off system to avoid incomplete fastenings

Specification

Model No.

Cell

Voltage: V

Battery

Max output (W)

Driving shank

Capacities

Impacts per min.: min. No load speed: min.

Max. fastening torque: N.m [kgf·cm] (in.lbs) Battery fuel gauge*

Automatic battery shut-off system

Electric brake LED job light

Variable speed control by trigger

Reverse switch Weight according to

EPTA-Procedure 01/2003*

*4 The fastening torque at 3 seconds after seating, when fastening M10 (grade 10.9) high tensile bolt. *5 The fastening torque at 3 seconds after seating, when fastening M12 (grade 10.9) high tensile bolt. *6 located on battery BL1415NA/ BL1415NAP/ BL1430A/ BL1430AP, not on the tool body *7 with battery

Capacity: Ah Energy capacity: Wh 22/ 44

Charging time (approx.): min.

Standard bolt

High tensile bolt

ˉ¹=ipm

ˉ¹=rpm

7: kg (lbs)

BTW074 BTW104

15/ 22 with DC18RC

140 150

9.5mm (3/8") Square drive M5 - M12 (3/16 - 1/2")

M5 - M10 (3/16 - 3/8")

0 - 2,500 0 - 2,700

65 [660] (575)*

(The image above is Model BTW074.)

Dimensions: mm (")

Length (L)

Width (W)

Height (H)

*1 149mm (5-7/8”) for Anti-wobble anvil version *2 with 1.5Ah Li-ion battery BL1415NA *3 with 3.0Ah Li-ion battery of BL1430A

Li-ion

14.4

1.5/ 3.0

0 - 3,500

4 95 [970] (841)*5

Yes

Yes Yes

Yes

1.1/ 1.3

(2.4/ 2.9)

144 (5-5/8)*

74 (2-15/16)

216 (8-1/2)

*1/ 234 (9-1/4)*2

Standard equipment

Optional accessories

Li-ion Battery BL1415NA Li-ion Battery BL1415NAP Li-ion Battery BL1430A Li-ion Battery BL1430AP Battery protector Charger DC18SD

Charger DC24SC Automotive charger DC18SE Fast charger DC18RA (for USA, Canada, Guam, Panama, Mexico, Colombia) Fast charger DC18RC (for all countries except the countries above) Protectors (blue/ white/ red) Automatic refreshing adapter ADP03

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Repair

CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.

[1] NECESSARY REPAIRING TOOLS

Code No. Description Use for

1R004 Retaining Ring S Pliers disassembling / assembling Ring spring 7

1R045 Gear extractor disassembling / assembling Hammer section

1R222

1R288

[2] LUBRICATION

Apply Makita grease FA No.2 to the following portions designated with the black triangle to protect parts and product from unusual abrasion.

Socket Adapter

Screwdriver magnetizer removing Steel ball 5.6 from Spindle

securing Ring spring 7

Item No. Description

Anvil

Steel ball 3.5 (24 pcs.) Whole portion

Spindle

Steel ball 5.6 (2 pcs.)

Fig. 1

Ring spring 7

Hammer case

Drum portion which is accepted by Needle bearing 1412 mounted in Hammer case complete

(a) Tip portion which is inserted into 14 Anvil

(b) in the hole where Spur gear 16 engages with Armature’s gear

Whole portion

Hammer

Washer 24

Compression spring 26

Cup washer 14

(a)

(b)

AmountPortion to lubricate

a little

approx. 2 g

a little

Internal gear 39

Internal gear case

Yoke unit

Spur gear 16 (2pcs.)

Repair

[3] DISASSEMBLY/ASSEMBLY [3] -1. Note for Assembly/Disassembly

The models can be distinguished depending on the max. fastening torque. See Fig. 2.

Fig. 2

Model No.Max. fastening torque Distinctive Parts

ø39

Hammer B

Compression spring (orange)

65 N.m

BTW073 BTW074

P 3/ 15

ID plate (white)

ID plate (red)

95 N.m

BTW103 BTW104

BTD063: Cover complete (white)

BTD064: Switch plate complete (white)

Hammer C

Compression spring (green)

BTD103: Cover complete (red)

BTD104: Switch plate complete (red)

When repairing the products, be sure to assemble Hammer, Compression spring and Switch plate complete or Cover complete as shown in Fig.2.

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Repair

[3] DISASSEMBLY/ASSEMBLY [3] -2. Armature

DISASSEMBLING

(1) Remove Armature section from Housing set as drawn in Fig. 3, and remove Brush holder from Armature in Fig. 4.

Fig. 3

1. Loosen four M4x22 Pan head screws and separate Hammer case complete from Housing set.

Hammer case complete

M4x22 Pan head screw

Hammer case

(4 pcs.)

complete

3. Loosen seven M3x20 Pan head screws and separate Housing set (R) from Housing set (L).

M3x20

Housing set (R)

Pan head screw (7 pcs.)

2. Loosen two M3x12 Pan head screws and separate Rear cover from Housing set.

Rear cover

M3x12 Pan head screw

4. Take out Brush holder and Motor section (Armature and Yoke unit) together with Internal gear case from Housing set (L).

Motor section

Brush holder

Internal gear case

Housing set (L)

Fig. 4

1. Shift the tail of Torsion spring from the top of Carbon brush to the notch of Brush holder. Then, Carbon brush is free from the pressure of Torsion spring.

Tail of Torsion Spring

Carbon Brush

Notch

Torsion Spring

Tail of Torsion spring

Carbon Brush

Notch

2. Take out Carbon brushes. Then, disassemble Armature and Yoke unit from Brush holder.

Carbon Brush

Yoke unit

Carbon brush

Armature

Brush holder

Repair

[3] DISASSEMBLY/ASSEMBLY [3] -2. Armature (cont.)

DISASSEMBLING

(1) Remove Armature as drawn in Fig. 5.

Fig. 5

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1. Remove Internal gear case from Motor section.

Internal gear case

Motor section

ASSEMBLING

(1) Insert Armature into Yoke unit so as not to damage the wiring of Armature and not to be pinched your fingers between yoke unit and Armature fan. And insert the drive end of Armature into Internal gear case as drawn in Fig. 6.

Fig. 6

1. Hold Yoke unit on workbench and slowly insert Armature into Yoke unit until the drive end reaches workbench.

Notch

2. When the drive end of Armature reaches worktable, lift up Yoke unit slowly.

2. Remove Armature from Yoke unit.

3. Insert the drive end of Armature into Internal gear case. And insert the commutator end of Armature into Brush holder.

Armature

Yoke unit

Internal gear case

Brush holder

Yoke unit

(2) Assemble Motor section (Armature, Yoke unit ), Internal gear case and Brush holder as drawn in Fig. 7.

Fig. 7

Assemble Internal gear case, Yoke unit, Armature and Brush holder to Housing set (L) by the following points. * setting the slip stopper of Internal gear case to the box portion of Housing set (L) * setting the notch of Yoke unit to the projection of Housing set

Housing set (L)

Note: Set Yoke unit with its Notch facing to the workbench side.

Box portion for Slip Projection for Notch of Yoke unit

stopper of Internal gear case

Slip stopper of Internal gear case

Notch of Yoke unit

Brush holder

Motor section

+ 10 hidden pages