Makita BTW152 Manual

Models No.
Description
PRODUCT
CONCEPT AND MAIN APPLICATIONS
Specification
Standard equipment
Optional accessories
P 1/10
Dimensions: mm (")
Width (W)
Height (H)*
*with Battery BL1430
Length (L) 158 (6-1/4)
79 (3-1/8)
234 (9-1/4)
Note: The standard equipment for the tool shown above may differ by country.
BTW152
Cordless Impact Wrench
BTW152 is a Cordless impact wrench powered by 14.4V/3.0Ah Li-ion battery BL1430.
Compact and lightweight, but powerful 4-pole DC Motor delivers strong torque of 200N.m
while reducing the tool’s overall length and weight to 158mm (6-1/4") and 1.5kg (3.3lbs).
This product is available in the following variations:
Note: This model cannot use 14.4V/1.3Ah Li-ion battery BL1415.
Belt clip ................................... 1
Sockets
Extension bar
Universal joint
Bit adapter assembly
Battery BL1430
Fast charger DC18RA
Charger DC18SD
Charger DC24SC
* Catalog value (torque at 6 seconds after seating, when fastening M16 high tensile bolt)
** Weight according to EPTA-Procedure 01/2003, with Battery BL1430
TECHNICAL INFORMATION
BTW152Z
BL1430DC18RA
NoNo
Model No. type quantity
Charger
1
No
Battery
cover
No All countries
Yes
Plastic
carrying case Offered to
No
BTW253RFE 2
Battery
Makita-blue
Housing
color
Battery
No load speed: min.-1=rpm
Impacts per min.: min.-1=ipm
Max. fastening torque*: N.m (in.lbs)
Charging time: min.
Capacities
Electric brake
Reverse switch
Net weight** : kg (lbs)
Variable speed control by trigger
Capacity: Ah
Cell
Voltage: V 14.4V
0 - 2,400
0 - 3,200
200 (1,770)
Standard bolt
Driving shank
M8 - M16 (5/16 - 5/8")
High tensile bolt M8 - M12 (5/16 - 1/2")
Yes
Yes
Yes
LED job light Yes
1.5 (3.3)
3.0 (battery BL1430)
Li-ion
190
approx. 22 with DC18RA
12.7mm (1/2") Square
Max output (W)
This model also includes the accessories listed below in "Standard equipment".

P 2/10
Repair
CAUTION: Remove the Battery from the machine for safety before repair/ maintenance
in accordance with the instruction manual!
[1] NECESSARY REPAIRING TOOLS
[2] LUBRICATIONS
Code No. Description Use for
1R041 Vise plate Protecting Hammer case complete, fixed with Vise from deformation or damage
1R045 Gear extractor (large) Disassembling Hammer
1R346 Center attachment Attaching to 1R045, when disassembling Hammer
1R223 Torque wrench shaft Disassembling Hammer case complete
1R224 Ratchet head 12.7 Attaching to 1R223, when disassembling Hammer case complete
1R288 Screwdriver magnetizer Magnetizing Screwdriver for removing Steel balls
134848-9 Socket 32-50 ( 2 pcs. ) Disassembling Hammer case complete
Apply Makita grease N.No.2 and FA No.2 to the portions designated with black and gray triangles
to protect parts and product from unusual abrasion;
*Makita grease N.No.2 to the portions designated with black triangle
*Makita grease FA No.2 to the portions designated with gray triangle
Fig. 1
Item No. Description Portion to lubricate
Hammer
Flat washer 17
Compression spring 35
Cup washer 14
Spindle
Armature
Steel ball 5.6 (2 pcs)
Steel ball 3.5 (24 pcs)
Anvil
Stepped drum portion inserted into the hole of 14 Anvil
Gear portion which engages with Spur gear 22
Whole portion
Whole portion
Drum portion that touches Sleeve 18 factory-assembled in Hammer case comp.
York unit
Internal gear 51
Bearing box
complete
Hammer case complete
Nylon washer 18
29
29
20
20
22
22
14
14
16
16

P 3/10
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-1. Hammer Case Section
DISASSEMBLING
Bumper
Remove Bumper, Hammer case cover and Rear cover, then separate Housing (R)
by unscrewing eight 3x16 Tapping screws.
1) Remove Hammer case complete and set it on Hex socket 32-50 (134848-9). (Figs. 2, 3)
3x16 Tapping
screw (2pcs)
3x16 Tapping
screw (8pcs)
Hammer case cover
Separate Hammer case section together with
Motor section from Housing (L), then pull
off Motor section from Hammer case section.
Fix Hex socket 32-50 (134848-9) firmly in vise,
then set Hammer section on Hex socket 32-50.
Note: Use two Vise plates (1R041) as illustrated
below in order not to damage Hex socket 32-50.
Rear cover
Housing (R)
Hammer case section
Motor section
Fig. 2
Fig. 3
Bearing box complete
1R041
Hex socket 32-50
(134848-9)
1R041
Fit this hexagonal portion
of Bearing box complete
in the socket of 134848-9
Hex socket 32-50.

P 4/10
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-1. Hammer Case Section
DISASSEMBLING
2) Remove Hammer case complete from Bearing box complete using 1R223, 1R224 and another Hex socket 32-50.
Hammer case section can now be disassembled as illustrated to right in Fig. 4.
Fig. 4
1R223
1R224
Hex socket 32-50
Hex socket 32-50
Bearing box
complete
Hammer case
complete
Hammer section
Internal gear 51
O Ring 40
Put another Hex socket 32-50 (134848-9)
over Hammer case complete with this
hexagonal portion fitting into the socket.
Hammer case
complete
Turn Hex socket 32-50 clockwise
using 1R223 and 1R224.

P 5/10
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-1. Hammer Case Section
ASSEMBLING
1) Assemble Hammer case section by piling component parts on Bearing box complete as illustrated in Fig. 5.
2) Engaging Armature’s pinion gear with Spur gears in Hammer section, assemble motor section to
Hammer case section as illustrated to left in Fig. 3.
3) Then assemble Housing (R), Hammer case cover and Bumper to the machine by doing the reverse of
the disassembling steps. (Fig. 2)
Internal gear 51
Bearing box
O ring 40
stepped end
Fig. 5
1R223
1R224
Fasten Hammer case complete
to Bearing box complete
by turning Hex socket 32-50
counterclockwise using 1R223
and 1R224 at the recommended
torque of 30 to 40 N.m.
Bearing box complete
Internal gear 51
Hammer case complete
Aligning the 4 locking grooves on the inside surface of
Hammer case complete with the four locking projections
of Internal gear 51, set Hammer case complete over
Bearing box complete.
Hex socket 32-50
(134848-9)
Bearing box
complete
Hammer section
Internal gear 51
O ring 40
Hammer case
complete
Fit the stepped end of Internal gear 51
in the groove of Bearing box.
Do not forget to set O Ring 40 in place
between Bearing box and Internal gear 51.
locking groove
locking protrusion
anti-rotation
protrusion
One of the four locking grooves is positioned on the back
of the anti-rotation protrusion of Hammer case complete.
By aligning the anti-rotation protrusion with any one of
the four locking protrusions of Internal gear 51, therefore,
you can fit all the locking protrusions in the corresponding
grooves.

P 6/10
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-2. Motor Section
1) Disassemble Motor section as illustrated in Fig. 2 and in left of Fig. 3.
2) Disconnect Carbon brush from the commutator of Armature, then remove Armature together with Yoke unit
from Brush holder complete. (Fig. 6)
3) Remove Armature from Yoke unit as illustrated in Fig. 7.
Fig. 6
Fig. 7
Put the assembly of Armature and Yoke unit
on a work bench so that the drive end of
Armature touches the work bench.
Then separate Yoke unit from Armature
by pressing it down towards the work bench.
DISASSEMBLING
Brush holder
complete
Armature
Yoke unit
1 Shift the tail of the torsion spring from the top of
Carbon brush into the notch of Brush holder complete
to remove the suppression force of the torsion spring.
2 Disconnect Carbon brush from the commutator
by pulling it in the direction designated with the arrow.
3 Pull off Armature and Yoke unit
from Brush holder complete.
Yoke unit
Armature
1) Assemble Armature to Yoke unit. Be sure to follow the instructions as described in Figs. 8, 9.
Your fingers can be pinched
and injured.
[Wrong][Correct] [Wrong][Correct]
Fig. 8 Fig. 9
ASSEMBLING
Because Yoke unit is a strong magnet, when assembling Armature to
Yoke unit, be sure to hold the commutator portion as illustrated below
on left. Do not hold the Armature core as illustrated to right or your
fingers will be pinched between Yoke unit and the fan of Armature
that is pulled strongly by the magnet force.
Yoke unit is directional 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, the Motor section
cannot be assembled to Housing (L).
notch

P 7/10
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-2. Motor Section
2) Make sure that Carbon brushes are in place on Brush holder complete and that the tail of each torsion spring is
in the notch of Brush holder complete.as illustrated on right in Fig. 6.
Then insert the assembly of Armature and Yoke unit into Brush holder complete.
3) Engaging Armature’s pinion gear with Spur gears in Hammering mechanism, assemble motor section to
Hammer case section. (See the left drawing in Fig. 3.)
4) Set Drive unit (consisting of Brush holder comp., Yoke unit, Armature and Hammer case comp.) to Housing (L)
as illustrated in Fig. 10.
Fig. 10
Fig. 11
ASSEMBLING
5) After setting Drive unit in place, make sure that Brush holder comp., Yoke unit, Hammer case comp. are placed
on Housing (L) as illustrated in Fig. 11.
6) Connect Carbon brushes to Armature’s commutator, then assemble Housing (R) to Housing (L).
When setting Motor section on Housing (L),
fit the protrusion of Housing (L) in the notch
on Yoke unit.
protrusion
notch
Yoke unit
Hammer case complete
Housing (L)
rib
rib
Brush holder
complete
anti-rotation
protrusion
Housing (L)
The end of Yoke unit has to fit
against this rib of Housing (L)
as illustrated below.
Housing (L)
Yoke unit
rib
Yoke unit
Switch
Hammer case
complete
The anti-rotation protrusion of
Hammer case complete has to
be placed on the Switch side.
The flat portion of Brush holder complete
has to be at 90 degrees to the edge surface
of Housing (L).
Housing (L)
flat portion of Brush
holder complete 90 degrees
Brush holder
complete
[View from Rear cover side]

P 8/10
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-3. Hammer Section
DISASSEMBLING
1) Disassemble Hammering section from Hammer case complete. See Figs. 2 to 4.
2) The removed Hammer section are disassembled as illustrated in Figs. 12 to 15.
1. Press down Hammer using 1R045 to align
the opening for Steel ball insertion with
the top of cam grooving on Spindle.
And then remove Steel ball 5.6 from Spindle.
Hammer
Spindle
Top of
cam groove
on Spindle
Opening for
Steel ball
insertion
Steel ball 5.6
(2pcs.)
Fig. 12
2. Hold Hammer section as illustrated in Fig. R,
and release it from the Gear extractor.
Note:
Do not hold gear extractor as illustrated in Fig. F
when releasing Hammer section from the Gear extractor.
Failure to follow this instruction could cause Steel balls
to get out of hammer.
Fig. R Fig. F
Fig. 13
Compression
spring 25
Cup washer 14
Spindle section
3. Hammer section can now be disassembled as illustrated below.
Hammer
Fig. 14
Hammer
Flat washer 24
Steel ball 3.5
(24 pcs.)
4. After removing Flat washer 24,
Steel balls 3.5 can be removed
from Hammer.
Fig. 15
Flat washer 12
Pin 5
Spindle Spur gear 22

P 9/10
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-3. Hammer Section
ASSEMBLING
1) Put Steel balls 3.5 (24 pcs.) into Hammer. (Fig. 16)
2) Put Flat washer 24 on the Steel balls (Fig. 15)
3) Then do the reverse of the disassembling steps.
(See Figs. 14 to 12.)
Fig. 16
Hammer viewed from Spindle insertion side
Steel ball 3.5 (24 pcs.)
Space equivalent to one Steel ball
[3]-4. F/R Change Lever
ASSEMBLING
Assemble F/R change lever to Switch and Housing as illustrated in Fig. 17.
Fig. 17
Housing (L)
F/R change lever
Switch
pin of Switch
prong portion of
F/R change lever
Fit the pin of Switch into the prong portion
of F/R change lever as illustrated below,
then insert F/R change lever to the holes of
Housing (L) and (R) as illustrated on right. prong portion
pin
into Housing (R)
Circuit diagram
LED
Light circuit
Brush holder
complete
Connector of Light circuit
Terminal
Switch
Fig. D-1
Color index of lead wire’s sheath
Black
Red
Orange
Blue
LED
Connector of Switch

P 10/10
Wiring diagram
Switch
Brush holder complete
Lead wire holder
Lead wire holder
LED
pin
boss
Connector (large)
Connector (small)
Light circuit
rib Terminal side
Switch side
Lead wire holder
Terminal
Fig. D-2
1. Lead Wires of LED
2. Other Lead Wires
Fix LED lead wires (red, black) with lead wire holder,
then route between pin and boss as illustrated below.
Assemble each Connecting
terminal to Switch at approx.
20 degrees to the vertical.
Fix the lead wires connected
to each connector with these
lead wire holders.
Put Light circuit in place
so that the orange lead wire
faces toward the Terminal side.
Lead wire
(orange)
20 degrees
Do not cross LED lead wires (red, black) here.
LED
Fit the corner of LED against the corner
of Housing (L) as illustrated below.
Do not slack LED lead wires
(red, black) in this area.
Put the following lead wires
between the rib and Light circuit.
* Lead wires (red, black) from
Terminal to Connector (small)
* Lead wire (blue) from Switch
to Connector (small)
Pin
The lead wire (blue) from
Connector to Switch has to
be routed inside of this pin.