Makita BTD042 Manual

Models No.
Description
PRODUCT
TECHNICAL INFORMATION
CONCEPTION AND MAIN APPLICATIONS
Specification
Standard equipment Optional accessories
< Note > The standard equipment for the tool shown
may differ from country to country.
P 1 / 10
BTD042, BTD062,
BTW072
Cordless Impact Drivers,
Cordless Impact Wrench
W2
W1 W1
CH
H
L
W2
CH
H
L
Dimensions : mm ( " )
Width 1 (W1)
Note: Width 1 = Width of motor section
Width 2 = Width of battery
Width 2 (W2)
Center
Height (CH)
55 (2-3/16)
25 (1)
66 (2-5/8)
Height (H)
Length (L)
236 (9-5/16)
164 (6-7/16) 166 (6-1/2)
TD042Z
TD062Z TW072Z
BTD042, BTD062
These models are the advanced type of
the existing model BTD040 and BTD060.
They are equipped with Automatic Blow-Stop
System, with which you can prevent an over-tightening.
And the indication lamp featuring these
models shows you the complete or incomplete
fastening of bolts or screws.
BTW072
This model is the 9.5mm(3/8") version of the
existing model BTW062.
Of course, it is equipped with Automatic
Blow-Stop System and indication lamp showing
complete and incomplete fastening like as BTD042
and BTD062.
BTW072
BTD042, BTD062
No load speed (min-1=rpm)
Max. fastening torque
Voltage (V)
Model No.
Capacities
Electric brake
Reverse switch
Impact per minute (min-1=bpm)
Driving shank : mm ( " )
* Net weight: kg (lbs)
* Net weight :
High Tensile bolt
Standard bolt
Machine screw
BTD042 BTD062 BTW072
9.6
M4 - M8
(5/32" - 5/16")
M5 - M10
(3/16" - 3/8")
M5 - M12
(3/16" - 1/2")
M5 - M12
(3/16" - 1/2")
M5 - M8
(3/16" - 5/16")
M5 - M10
(3/16" - 3/8")
M5 - M10
(3/16" - 3/8")
M4 - M8
(5/32" - 5/16")
40N.m
(408Kgf.cm)
( 354in.lbs)
65N.m
(663Kgf.cm)
(575in.lbs)
65N.m
(663Kgf.cm)
(575in.lbs)
6.35 (1/4) Hex 6.35 (1/4) Hex 9.5 (3/8) square
9.6 9.6
1.06 (2.4) 1.09 (2.5) 1.09 (2.5)
Yes
* Battery B9017A for Mod.BTD042, BTD062 and BTW072
* Protector for Mod.BTD042, BTD062 and BTW072
* Fast charger DC14SA
for Mod.BTD042, BTD062 and BTW072
* Refresh adaptor Model ADP02
for Mod.BTD042, BTD062 and BTW072
Yes
Yes Yes
Yes
Yes
0 - 3,500 0 - 3,000
0 - 2,500 0 - 2,500 0 - 3,000 0 - 2,500
including battery B9017A
Battery B9017A .................. 1 pc.

Features and benefits P 2 / 10
Light and compact body
Newly developed D-28 type motor
making a feature of
* Externally accessible carbon brush
* Replaceable armature
* High efficiency in cooling
* Yoke unit (field) made of rare earth
Model No.
BTD042
BTD062
Overall length Net weight
164mm
Indication lamp shows you the complete
or incomplete fastening of bolts or screws.
* Green lamp : complete fastening
* Red lamp : incomplete fastening
Push button type
reverse switch
BTD042 , BTD062
Slim shaped grip makes it
easy to grip even with gloved
hand, and small bosses are
molded on it for nonslip
operation
Assembled with machine
screws for easy removing
and repairing.
Bit sleeve is covered with
rubber to protect work piece
from accidental scratches
Magnesium alloyed hammer case
* BTD042Z/ black,
* BTD062Z BTW072Z/ silver)
Rubber protector (optional accessory)
can be installed for protecting work piece
from the accidental scratch.
(Rubber protector)
Easily operatable
variable speed control
switch
Battery power warning lamp on B90117A
Voltage
100 80 60 40 20 0
The condition of
power display lamp
The auto stop system functions.
This lamp informs of the battery power remaining
as per the diagram mentioned below.
And the machine is to be stopped automatically,
when the power remainder decreases to 20%.
Thus, the incomplete fastening is avoided.
Automatic Blow-Stop System for prevention
of over tightening
The machine is to be stopped automatically
in accordance with the pre-set blowing
time.
<Note>
The required fastening torque (N.m) can not be
set with this system.
1.06 Kg
1.09 Kg
Mod. ADP02 Refresh Adaptor
Because of the auto stop system, approx. 20%
of battery power always remains in battery cells,
which can be cause of battery's inactivity.
In order to avoid such trouble, the battery has
to be refreshed with refresh adaptor ADP02
every week.

Features and benefits P 3 / 10
Newly developed D-28 type motor
making a feature of
* Externally accessible carbon brush
* Replaceable armature
* High efficiency in cooling
* Yoke unit (field) made of rare earth
Indication lamp shows you the complete
or incomplete fastening of bolts or screws.
* Green lamp : complete fastening
* Red lamp : incomplete fastening
Slim shaped grip makes it
easy to grip even with gloved
hand, and small bosses are
molded on it for nonslip
operation
Assembled with machine
screws for easy removing
and repairing.
Magnesium alloyed hammer case
Easily operatable
variable speed control
switch
Automatic Blow-Stop System for prevention
of over tightening
The machine is to be stopped automatically
in accordance with the pre-set blowing
time.
<Note>
The required fastening torque (N.m) can not be
set with this system.
Push button type
reverse switch
Light and compact body
Model No.
BTD072
BTD072
Overall length Net weight
162mm 1.09 Kg
Rubber protector (optional accessory)
can be installed for protecting work piece
from the accidental scratch.
(Rubber protector)
Battery power warning lamp on B90117A
Voltage
100 80 60 40 20 0
The condition of
power display lamp
The auto stop system functions.
This lamp informs of the battery power remaining
as per the diagram mentioned below.
And the machine is to be stopped automatically,
when the power remainder decreases to 20%.
Thus, the incomplete fastening is avoided.
Mod. ADP02 Refresh Adaptor
Because of the auto stop system, approx. 20%
of battery power always remains in battery cells,
which can be cause of battery's inactivity.
In order to avoid such trouble, the battery has
to be refreshed with refresh adaptor ADP02
every week.

P 4 / 10
Automatic Blow-Stop System and How to Pre-set the Number of Blows
(1) What Is the Automatic Blow-Stop System
(2) How to Pre-set the Number of Hammer-blows
These three models have a new function that protects screws or bolts from over-tightening.
This practical function is the automatic blow stop system:
You can pre-set the number of blows to the optimum one for your application before starting operation.
And, immediately after the number of blows has reached to the pre-set one, the blow action can be
automatically and instantly stopped, preventing you from over-tightening a screw or a bolt.
Follow the steps 1 to 8 listed below to pre-set the number of hammer-blows.
There is an LED on the back of the machine, and its two lights (green and red) can help you to confirm completion of
each step.
1
While pulling the switch trigger to the full, install the battery
on the machine.
Note:
You must keep on pulling the switch trigger to the full until the
2nd step is completed.
After the lights blink ten times, they
come to be on continuously.
2Softly hit the foot of the machine only once with a driver. etc. The lights turn off.
The lights turn off.
Fig.1
4
While pulling the switch trigger to the full, set the second digit
of desired number of blows by hitting the machine
as many times as the number of the second digit. (Do not hit the
machine if the second digit is zero.)
eg: If you set the number of blows to 12, hit the
machine once.
On hitting the machine, the green light
turns on. Fig.2
Fig.2
3Release the switch trigger. After the lights come to be on for
0.5sec., they turn off. Fig.3
6
While pulling the switch trigger to the full, set the first digit
of desired number of blows by hitting the machine
as many times as the number of the first digit. (Do not hit the
machine if the second digit is zero.)
eg: If you set the number of blows to 12, hit the
machine twice.
On hitting the machine, the red light
turns on. Fig.2
5Release the switch trigger. Fig.3
7Release the switch trigger. The lights turn on.
8Remove the battery from the machine, and pre-setting is success-
fully completed. The lights turn off.
Fig.3
What to do See
Fig.
State of the LED
Step
Fig.1 Fig.2 Fig.3

P 5 / 10
(3) How to Check the Pre-set Number of Blows
(5) Relation Between Preset Number of Blows and Time Required to Finish the Blows
(4) Relation Between Pre-set Number of Blows and its function
Release the switch trigger, install the battery on the machine, and then check how many times the green or the red
light of the LED blinks.
As mentioned in page I-3, the green light blinking indicates the second digit of the pre-set number of blows,
and the red light blinking indicates the first digit.
Therefore, when the pre-set number of blows is 12, you can see the following states on the LED:
First, the green light blinks once.
Second, the red light blinks twice.
Third, the lights turn off.
The equation for this relation is:
Time required = ( Preset number of hammer blows X *2 ) X **20ms
Note* : "X2" means two blows per spindle rotation.
Consequently, when the preset number of hammer-blows is 10, the hammer actually blows 20 times.
Note**: ms = micro second
The following graph shows this relation.
Preset number of hammer-blows
Time required (sec.)
0 10 20 30 40 50 60 70 80 90 100
0
0.5
1
1.5
2
2.5
3
3.5
4
Automatic Blow-Stop System does not
work.
Automatic Blow-Stop System does not
work.
Automatic Blow-Stop System does not
work.
When you keep on pulling the trigger until
the blow action finish the pre-set number of
blows, the green light turns on to notify you
that the bolt has been completely tightened.
On Forward Rotation On Reverse Rotation
Pre-set number
of blows
Forward or
Reverse
00
01 to 99
When you release the trigger before
the blow action finish the pre-set number of
blows, the red light turns on to notify you
that the bolt has been poorly tightened.

Features and benefits P 6 / 10
The Relation Between Fastening Torque and Fastening Time
When Fastening Standard Bolt M6
Torque (N.m [in.lbs])
Time (sec.)
0
15
10
5 [44]
[89]
[133]
0 0.2 0.4 0.6 0.8 1
Time (sec.)
01 1.5 2 2.5 3
00.5
5
10
15
20
25
[44]
[89]
[133]
[177]
[221]
Time (sec.)
10 [89]
[177]
[266]
[354]
20
30
40
50
60
1 2 3 4 5
BTD042
BTD042
BTD062 / BTW072
BTD042
BTD062 / BTW072
When Fastening High Tensile Bolt M6
When Fastening Standard Bolt M8 When Fastening High Tensile Bolt M8
Torque (N.m [in.lbs])
Torque (N.m [in.lbs])
Torque (N.m [in.lbs])
Time (sec.)
0
00
25
20
10
15
5
0
00
0.5 11.5 2
Time (sec.)
012345
0
10 [89]
[177]
[266]
[354]
[443]
20
30
40
50
60
Time (sec.)
20 [177]
[354]
[531]
[708]
40
60
80
12345
BTD042
BTD042
BTD042
BTD062 / BTW072
When Fastening Standard Bolt M10 When Fastening High Tensile Bolt M10
BTD062 /B TW072
BTD062 / BTW072 BTD062 / BTW072
Torque (N.m [in.lbs])
Torque (N.m [in.lbs])
[443]
[531]
[44]
[89]
[133]
[177]
[221]
[531]

Comparison of products P 7 / 10
Model No.
Battery
Length
Width
Height
Dimensions
: mm (")
BTD042 BTD062 BTW072
MAKITA
Impact driver Impact wrench
Specifications
Charging time with DC14SA
Voltage ( V )
Capacity ( Ah )
Energy ( Wh )
Kind of cell
No load speed (min-1=rpm)
Impact per minute (min-1=bpm) 0 - 3,500
0 - 2,500
0 - 3,000
Max. fastening torque 40N.m
(408Kgf.cm)
( 354in.lbs)
65N.m
(663Kgf.cm)
(575in.lbs)
Net weight including
battery B9017A: kg (lbs) 1.06 (2.4) 1.09 (2.5)
164 (6-7/16)
236 (9-5/16)
66 (2-5/8)
162 (6-3/8)
236 (9-5/16)
66 (2-5/8)
9.6
1.7
16.3
Ni-MH
30 minutes
Repair
<1> Disassembling housing R and L
Remove hammer case from housing by taking off
4 pan head screws M4x20, and disassemble
housing R and L as illustrated in Fig. 1.
Fig. 1
Pan head screws
M4x20
Hammer case
Housing
<2> Disassembling bit holder section (anvil section)
Take off ring spring 10 from the groove on anvil.
Then flat washer 11, compression spring 13 and sleeve
can be removed from anvil by pulling them in the
direction of the arrow in Fig.2.
Anvil can be separated from hammer case after
disassembling sleeve section.
Ring spring 10
Flat washer 11 Compression spring 13
Sleeve Anvil
Steel ball 3
Pull out in this direction Fig. 2
Fig. 3
<3> Apply 0.5g of MAKITA grease N No.2 on the
cylindric part of anvil, when inserting it into
hammer case.
Apply MAKITA grease N No.2
Anvil

Repair P 8 / 10
< 4 > Removing hammer
(1) Press down hammer with 1R045: Large gear extractor
by turning the handle.
(2) Adjust the opening for steel ball inserting to the cam groove top of spindle.
(3A) Take 2 off steel balls 5.6 from spindle. (Mod.BTD062, BTW072)
(3B) Take 2 off steel balls 4.8 from spindle. (Mod.BTD042)
< Note > 29 pcs. of steel balls 3 are installed in hammer.
Check the quantity when assembling.
Fig. 4
Spindle
Cam groove top
of spindle
Opening for steel
ball inserting
Steel ball 4.8 x 2pcs. (BTD042)
Steel ball 5.6 x 2pcs. (BTD062, BTW072)
Steel ball 3 x 29 pcs.
Hammer
1R045 Large gear extractor
L
L= 85mm
L=105mm
L=130mm
W: The maximum opening width
is 170mm.
W
(4) Spur gear 16
(4) Apply MAKITA grease N No.2 to the position No. 1, 2,
3 and 4, when assembling. (1) Spindle
(3A) Steel ball 5.6 x 2 (BTD062, BTW072)
(3B) Steel ball 4.8 x 2 (BTD042)
(3A) Steel ball 5.6 (BTD062, BTW072) : 0.5g
(3B) Steel ball 4.8 (BTD042) : 0.5g
(2) Steel ball 3 x 29 pcs.
(2) Steel ball 3 : 0.5g
Hammer
(4) Spur gear 16
(4) Spur gear 16 : 2.0g
Fig. 5
(1) Spindle : 0.5g

Repair P 9 / 10
< 5 > Removing ball bearing 6801LLB
Give a shock by knocking internal gear case
on the table.
Ball bearing 6801LLB can be removed
from internal gear case by the shock.
Ball bearing 6801LLB
Internal gear case
Fig. 6
< 6 > Fastening FET spacer with tapping screw ST 3x8
When assembling FET spacer, the fastening torque of tapping screw ST 3x8 is approx. 1.1 Nm - 1.5 Nm
(11Kgf.cm - 15 Kgf.cm).
FET spacer
Tapping screw ST 3x8
(The fastening torque
is approx. 1.1Nm -
1.5Nm.)
Fig. 7
Hammer case
< 7> Hammer case has to be fastened diagonally as illustrated in in Fig.8.
Fig.8

Circuit diagram
Wiring diagram
P 10 / 10
Color index of lead wires
Yellow
Red
Black
White
M
M1
M2
M2
Switch
Terminal
DC Motor
LED
FET
Vinyl
tube
Shrink these tubes by heat.
Controller
Pass FET lead wires (3 pcs)
between endbell lead wires
(red and black).
Pass lead wires between pin and
endbell holding rib.
Fixing LED lead wires with lead
holder, pass them between pin and
endbell holding rib.
Pin
Pin
Boss
Lead holder
Fixing lead wires (red, black,
white) with lead holder, pass
them on the left side of boss.
Pass endbell lead
wire (red) between
ribs.
Ribs Ribs
Endbell complete
Endbell
holding rib LED
Pass LED lead wires
along the groove under
switch.
Lead holder
Controller
Controller
Switch