Makita BTD141 Manual

Models No.

Description

PRODUCT

TECHNICAL INFORMATION

P 1/9

BTD141

Cordless Impact Driver

CONCEPT AND MAIN APPLICATIONS

Specification

Standard equipment

Optional accessories

Note: The standard equipment for the tool shown above may differ by country.

Model BTD141 has been developed as a successor model of BTD140.

Additionally to the same advantages as BTD140, Model BTD141 features:

1.5Ah Li-ion battery BL1815 can be used.

One-touch bit installation

Compact hammer case cover

Phosphorescent bumper that glows blue in dark places

See the product variation list above.

Battery

No load speed: min.-1=rpm

Impacts per min.: min.-1=ipm

Max. fastening torque*: N.m (kgf.cm/ in.lbs)

Charging time: min.

Capacities

Electric brake

Reverse switch

Net weight [with BL1815/ BL1830]: kg (lbs)

Variable speed control by trigger

Capacity: Ah

Cell

Voltage: V 18V

0 - 2,300

0 - 3,200

150 (1,530/ 1,330)

Standard bolt

High tensile bolt

Machine screw

Driving shank

M5 - M14 (3/16 - 9/16")

M5 - M12 (3/16 - 1/2")

Coarse thread screw 22 - 125mm (7/8 - 4-7/8")

M4 - M8 (5/32 - 5/16")

Yes

1.3/ 1.5 (2.8/ 3.3)

1.5/ 3.0 (battery BL1815/ BL1830)

Li-ion

220

approx. 15/ 22 with DC18RA

6.35mm (1/4") Hex

This product is available in the following variations.

BTD141RFE

BTD141Z

BTD141ZK

BTD141RFE3

BTD141RFEW

BTD141RHE

BTD141RHEW

BL1830

(Li-ion 3.0Ah)

DC18RA

Model No. type quantity Charger

Yes

Belt

clip

Battery

cover

Yes

Plastic

carrying case

BL1815

(Li-ion 1.5Ah)

Battery

Makita-blue

white

Makita-blue

white

Housing

color

Phillips bits

Socket bits

Bit piece

Li-ion Battery 1830

Li-ion Battery 1815

Fast charger DC18RA

Charger DC24SA (for North America only)

Charger DC24SC (for all countries except North America)

Dimensions: mm (")

Width (W)

Height (H)

Length (L) 145 (5-3/4)

79 (3-1/8)

235 (9-1/4)*2

217 (8-1/2)*1

*1: with Battery BL1815

*2: with Battery BL1830

(with Battery BL1830)

Max output (W)

*Catalog value (torque at 3 seconds after seating, when fastening M14 high tensile bolt)

P 2/9

[2] LUBRICATION

Apply the following lubricants to protect parts and product from unusual abrasion:

*Makita grease N No.2 to the Portions designated with

*Makita grease FA No.2 to the portions designated with

[1] NECESSARY REPAIRING TOOLS

CAUTION: Remove the battery from the machine for safety before repair/ maintenance

in accordance with the instruction manual!

Fig. 1

Repair

DescriptionCode No.

1R041 Vise Plate Protecting Hammer case, when fixing it with Vise

1R045 Gear Extractor (large) Disassembling Hammer section

1R223 Torque Wrench Shaft 20-90N.m Disassembling Hammer case

1R346 Center Attachment Attaching to 1R045

1R224 Ratchet Head 9.5 Attaching to 1R223, when disassembling Hammer case

1R232 Pipe 30 Supporting Anvil to remove Sleeve easily

1R288 Screwdriver Magnetizer Removing Steel balls

1R291 Retaining Ring S & R Pliers Disassembling Sleeve

134847-1 Socket 30-78 Disassembling Hammer case

134848-9 Socket 32-50 Fixing Bearing box, when removing Hammer case

Use for

Item No. Description Portion to lubricate

Anvil

16 Hammer case complete Sleeve 14 that accepts Anvil

21 Steel ball 3.5 (24 pcs) Whole Portion

25 Steel ball 5.6 (2 pcs) Whole Portion

27 Spindle

27a: Top portion that contacts Anvil

27b: Hole for Armature’s gear

Hammer

Flat washer 24

Cup washer 14

Flat washer 12

Internal gear 51

Bearing box

Armature

Compression spring 24

Makita grease

FA No.2 a little

Makita grease

FA No.2 a little

AmountLubricant

Makita grease

N.No.2 a little

Makita grease

N.No.2 2g

P 3/9

Repair

[3] DISASSEMBLY/ASSEMBLY

[3] -1. Disassembling/Assembling Hammer Section

1) Remove Belt clip by unscrewing Screw M4x12.

After removing Bumper and Hammer case cover

by hand, then remove Rear cover by unscrewing

two PT3x16 Tapping screws. (Fig. 2)

Note:

See Fig. 3 for removal of Hammer case cover

from Hammer case complete.

2) Shift the tail of torsion spring from Carbon brush onto the notch in Brush holder.

Then pull off Receptacle from Brush holder. Carbon brush can now be removed from Brush holder. (Fig. 4)

3) Separate Housing (R) from Housing (L) by removing eight PT3x16 Tapping screws.

4) Remove the assembly of Hammer section and Motor section from Housing (L), then separate Hammer section from

Motor section.

DISASSEMBLING

Rear cover

Tapping screw

PT3x16 (2 pcs)

Hammer case cover

Hammer case complete

Belt clip

Fig. 2

Screw M4x12

Fig. 4

1 2

A[Brush holder section (Viewed from A)]

Carbon

brush

Carbon

brush

Torsion

spring

1. Shift the tail of Torsion spring

onto the notch of Brush holder.

2. Then pull off Receptacle from

Brush holder.

1. Remove Bumper, then remove the locking claws of

Hammer case cover from the groove of Hammer case

complete.

2. Hammer case cover can separated from

Hammer case complete.

locking claw

Fig. 3

locking claw

Bumper

Hammer case cover Hammer case complete

Hammer case cover

Hammer case complete

Bumper

P 4/9

Repair

[3] -1. Disassembling/Assembling Hammer Section (cont.)

top of cam groove

on Spindle

Steel ball 5.6

6) Install 1R346 on R045, and set them on Hammer mechanism as illustrated in Fig. 6.

Then turn the handle of 1R045 clockwise to lower Hammer to the full.

7) Align the notch in Hammer with the top of the cam groove on Spindle.

Then take Steel ball 5.6 (2 pcs) out of Spindle using tweezers or a slotted screwdriver magnetized with 1R288. (Fig. 7)

8) Remove 1R045 by turning the handle counterclockwise.

Fig. 7

Hammer

Spindle

1R346

1R045

Fig. 6

5) Attach a pair of 1R041 to vise. Fix Socket 32-50 in vise securely. Then put Hammer section on Socket 32-50

while fitting the hexagonal portion of Bearing box in Socket 32-50. Fit Socket 30-78 over the hexagonal portion of

Hammer case complete. Then, by turning Socket 30-78 clockwise with 1R223 and 1R224, Hammer section can be

disassembled as illustrated to right in Fig. 5.

Fig. 5

Hammer section

1R223

1R224

Socket 30-78

1R041

Vise

Socket 32-50

1R041 Bearing box

Internal gear 51

O ring 40

Bearing box

Hammer mechanism

Hammer case complete

Bit holder section

9) Remove Spindle, Compression spring 45 and Cup washer 14 from Hammer as illustrated in Fig. 8.

Important: Be sure to lower the Hammer side so that Steel balls in Hammer cannot fall down and scatter.

10) Steel ball 3.5 can now be removed from Hammer. There are twenty-four 3.5 Steel balls in the groove on the inside

of Hammer. (As illustrated in Fig. 9, the groove is designed to have a space equivalent to one 3.5 Steel ball.)

Fig. 9

Hammer

Steel ball 3.5

(24 pcs)

space equivalent to

one 3.5 Steel ball

Fig. 8

Hammer

notch for

Steel ball insertion

Fit Socket 30-78 over

this hexagonal portion.

P 5/9

Repair

[3] -1. Disassembling/Assembling Hammer Section (cont.)

Do the reverse of the assembling steps.

Note:

1) Assemble by piling component parts on Bearing box as illustrated in Fig. 10.

2) Make sure that twenty-four 3.5 Steel balls are in place inside Hammer.

3) Do not forget to install O ring 40 when assembling Internal gear 51 to Bearing box. (Fig. 11)

4) Internal gear 51 is not reversible when assembled to Bearing box. Be sure to assemble with the stepped end of

the gear on Bearing box side. (Fig. 11)

5) Assemble Hammer case complete to Bearing box as described in Fig. 12.

Fig. 12

Fig. 13

Bearing box

Hammer case complete

Socket 32-50

for fixing Bearing box

four projections

Internal gear 51

ASSEMBLING

Fig. 11Fig. 10

Internal gear 51

Bearing box

O ring 40

stepped end

Internal gear 51

O ring 40

Bearing box

Hammer mechanism

Hammer case complete

four grooves on

the inside surface

locking claw

of Hammer case cover

Bumper

depressed portion

locking protrusion

6) When assembling Bumper to Hammer case cover:

1. Match the depressed portions of Bumper to

the locking claws of Hammer case cover.

2. Fit the locking protrusions of Bumper in the

groove on Hammer case complete. (Fig. 13)

Fit Hammer case complete over Internal gear 51 with

the four grooves on the inside of Hammer case complete

aligned with the corresponding projections on Internal gear 51.

groove on

Hammer case complete

Then, using No.1R224, 1R223 and

Socket 30-78, fasten Hammer case complete

to Bearing box by turning counterclockwise

to the recommended torque of 30 - 40 N.m.

Socket 30-78

P 6/9

Repair

[3] -2. Disassembling/Assembling Bit Holder Section

1) Put Anvil on 1R232. (Fig. 14)

2) Press the top of Sleeve with thumb so that Compression spring 13 does not pop out of Sleeve. (Fig. 15)

3) While expanding Ring spring 11 using 1R291. raise the opposite side of Ring spring 11 with index finger. (Fig. 15)

4) Now Bit holder section can be disassembled as illustrated in Fig. 16.

Do the reverse of disassembling steps.

Fig. 14 Fig. 15

ASSEMBLING

DISASSEMBLING

[3] -3. Disassembling/Assembling Motor Section

1) Separate the assembly of Armature and Yoke

unit from the machine.

(Refer to 1) to 4) of [3] -1. Disassembling

Hammer Section.)

2) Put the assembly of Yoke unit and Armature

on work bench so that the drive end of the

Armature touches work bench.

Then separate Yoke unit from armature by

pressing it down towards work bench.

(Fig. 17).

DISASSEMBLING

1R232

Anvil

Hammer case complete Sleeve

Ring spring 11

Sleeve

Important:

Do not forget to mount Nylon washer.

(Fig. 16)

Press the top of Sleeve

with thumb.

Raise this side (opposite to the expanded side) with index finger.

Expand Ring spring 11

using 1R291.

Fig. 16

Hammer case complete Nylon washerSleeve

Steel ball 3.5

Anvil

Compression spring 13

Flat washer 12

Yoke unit

Fig. 17

P 7/9

Repair

[3] -3. Disassembling/Assembling Motor Section (cont.)

Do the reverse of disassembling steps.

Important:

1) Yoke unit is not reversible when assembled to Armature. Be sure to assemble so that the notch in Yoke unit is positioned

on the drive-end of Armature. If assembled wrong, Motor section cannot be assembled to Housing (L). (Fig. 18)

2) Because Yoke unit is a strong magnet, when assembling Armature to Yoke unit, be sure to hold Commutator portion

as illustrated to left in Fig. 19. Do not hold Armature core as illustrated to right or your fingers will be pinched

between Yoke unit and Fan of Armature that is pulled strongly by the magnet force of Yoke unit.

Fig. 18 Fig. 19

ASSEMBLING

3) Assemble Motor section and Hammer section

to Housing (L) as described in Figs. 20, 21.

Your fingers can be pinched

and injured.

[Wrong][Correct] [Wrong][Correct]

notch

Fig. 20

notch Housing (L)projection

Hammer

case side

Brush holder complete must be so mounted that

its flat portion is 90 degrees to the edge of Housing (L).

edge of

Housing (L)

Brush holder

complete

Housing (L)

flat portion of

Brush holder complete

Switch

stopper (protrusion)

of Hammer case comp.

Yoke unit

Stopper must face

towards Switch side.

Fig. 21

Fit the projection on Housing (L) in the notch on Yoke unit.

90 degrees

rib

Fit the end surface of Yoke unit to

this rib of Housing (L).

Fit the end surface of Yoke unit to

this rib of Housing (L).

P 8/9

Fig. D-2

[1] Lead Wire of Carbon Brush

As illustrated to left in Fig. D-2, put each Carbon brush into

Brush holder so that its lead wire is placed outside.

Then route the lead wire of Carbon brush through the

outside slot in Brush holder as illustrated to left in Fig. D-2.

(Illustrations in Fig. D-2 is Carbon brush section viewed from A.)

[Correct] [Wrong]

Lead wire of Carbon brush

Lead wire correctly routed

Torsion spring

tail of Torsion spring

Circuit diagram

Color index of lead wires' sheath

Black

White

Red

Orange

Blue

LED

Light circuit

Switch

Brush holder

complete

Terminal

Connector

Wiring diagram

Route the lead wire of

Carbon brush through this

outside slot in Brush holder.

Lead wire routed

wrong may interfere

the tail of Torsion

spring.

Fig. D-1

P 9/9

Fig. D-3

[2] Wiring in Housing

Wiring diagram

Put Light circuit in place

so that the orange Lead wire

faces toward the Terminal side.

rib

Terminal side

Switch side

Lead wire

(orange)

With these lead wire holders,

fix the lead wires connected

to each connector.

[2] -2. Other Lead Wires

Connector

LED

Assemble each Connecting

terminal to Switch at approx.

degrees to the vertical.

Switch

Put the following lead wires

between the rib and Light circuit.

*Lead wires (red and black) from

Terminal to Connector (small)

*Lead wire (blue) from Switch

to Connector (small)

[2] -1. Lead Wires of LED

Lead wire holder

Light circuit

Fit the corner of LED in this

corresponding corner of Housing (L).

As illustrated below, fix the two Lead wires (black, white) of LED

with Lead wire holders, and route them between the pin and the boss.

Connector (large)

Connector (small)

Lead wire holder

Brush holder complete

Light circuit

Lead wire holder

boss

Do not cross the lead wires of LED here.

Be sure that Lead wires

of LED are tight in this area.

The lead wire (blue) from

Connector to Switch has to

be routed inside of this pin.

Terminal

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