Makita BDA340 Manual

PRODUCT
TECHNICAL INFORMATION
P 1/ 7
Dimensions: mm (")
Width (W)
Height (H)
Length (L) 314 (12-3/8)
BDA340 BDA350
79 (3-1/8)
97 (3-13/16) 115 (4-1/2)
W
H
L
BDA340
BDA350
Model No.
Description
CONCEPT AND MAIN APPLICATIONS
Specification
BDA340/BDA350
14.4V/18V Cordless Angle Drill 10mm (3/8")
Models BDA340 and BDA350 have been developed as the DC version tools
of Model DA3010F, featuring:
Compact and lightweight design obtained by using Li-ion battery
as a power unit
High power 4-pole motor for excellent drilling performance
Sister tools featuring Keyless drill chuck are also available
as Models BDA341/BDA351.
(See Technical Information of BDA341/BDA351 for detailed information.)
These products are available in the following variations.
BDA340Z No
Model No. type quantity Charger
---No
Battery
No
BDA340
DC18RA
BDA340RF 1
Plastic carrying
case
BDA340RFE 2
BL1430
(Li-ion 3.0Ah) Yes
No
Battery
cover
No
1
Offered to
All countries
All countries except
North America
North America
BDA340
BDA350Z No
Model No. type quantity Charger
---No
Battery
No
BDA350
DC18RA
BDA350RF 1
Plastic carrying
case
BDA350RFE 2
BL1830
(Li-ion 3.0Ah) Yes
No
Battery
cover
No
1
Offered to
All countries
All countries except
North America
North America
BDA350
Battery
Capacity of drill chuck: mm (")
Capacity: mm (")
Electric brake
Variable speed control
Reverse switch
Steel
Wood
No load speed: min-1=rpm
Cell
Voltage: V
Capacity: Ah
Net weight: kg (lbs) *with Battery BL1430
**with Battery BL1830
Max output: W
Li-ion
14.4
Model BDA340
18
BDA350
3.0
Yes
Yes
Yes
LED job light Yes
1.5 (3.3)* 1.6 (3.5)**
10 (3/8)
25 (1)
0 - 1,8000 - 1,700
1.5 (1/16) - 10 (3/8)
Drill chuck type Keyed
230 280
Standard equipment
Optional accessories
Note: The standard equipment for the tool shown above may differ
by country.
Side grip ... 1
Battery BL1430 (for BDA340)
Battery BL1830 (for BDA350)
Drill bits for wood
Drill bits for steel
Charger DC24SA (for North America only)
Charger DC24SC (except for North America)
Fast charger DC18RA
Belt clip
Chuck key ... 1 Key holder... 1

P 2/ 7
[2] LUBRICATION
Apply Makita grease N. No.2 to the following portions designated with the black triangle to protect parts and product
from unusual abrasion.
[1] NECESSARY REPAIRING TOOLS
CAUTION: Remove the bit and the battery from the machine for safety before
repair/ maintenance in accordance with the instruction manual!
Fig. 1
Repair
Description
Assembling / Disassembling Bearing retainer 36-43
Separating Spur gear 29 from Spiral bevel gear 9
Removing Spiral bevel gear 26 from Key 4
Removing Spiral bevel gear 26 from Key 4 (BDA340 / 350)
Removing Spur gear 29 from Spiral bevel gear 9
Removing Ball bearings
Removing Retaining ring S-12
Code No.
Bearing setting plate 17.2
1R036
Gear Extractor (large)
1R045
Round bar for Arbor 6-50
1R280
Bearing extractor
1R269
Retaining ring S and R pliers
1R291
Wrench for Bearing retainer
(with expanded claw distance
from 30mm to 36mm)
1R292
Center attachment for 1R045
1R346
Use for
Item No. Description
Spiral bevel gear 9 Teeth portion for smooth engaging with Spiral bevel gear 26
Gear housing
cover
Ball bearing 608ZZ
Ball bearing
6806DDW
Drill chuck S10
Ball bearing 696ZZ
Spur gear 29
Brush holder
complete
Spiral bevel
gear 26
Yoke unit
Portion to lubricate Amount
3
3
Armature Drive end where engages with Spur gear 29
15
15
Gear housing
4g
2g
Makita grease N No. 2

P 3/ 7
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-1. Drill Chuck S10, Spiral Bevel Gear 26
DISASSEMBLING
To fit 1R292 to the notch of Bearing
retainer, enlarge this width from 30mm
to 36mm by grinding 1R292.
1R292
Refer to Figs. 2 to 7.
notch for fitting
1R292
Bearing retainer
Clamp the machine
with vise.
Remove Bearing retainer 36-43 with 1R292
by turning it clockwise.
1R292
Bearing retainer 36-43
After removing Bearing retainer 36-43, remove Drill chuck
S10. At this time, Ball bearing 608ZZ, Retaining ring S-12,
Spiral bevel gear 26 and Ball bearing 6806DDW come with
Drill chuck S10.
Ball bearing
6806DDW
Drill
chuck S10
Spiral bevel gear 26
Remove Ball bearing
608ZZ with 1R269.
Remove Retaining ring
S-12 with 1R291.
Ball bearing 608ZZ Retaining ring S-12
1R269
1R291
Fig. 2 Fig. 3
Fig. 4 Fig. 5
Fig. 6
Drill chuck S10
[the jaws are open.]
Drill chuck S10
[the jaws are close.]
These tails of jaws
interfers in removing
Ball bearing 6806DDW.
Ball bearing 6806DDW
The tails of jaws enter into
Drill chuck S10 by closing jaws.
Now Ball bearing 6806DDW
is free from the tails of jaws.
Ball bearing 6806DDW
1R045
Insert the jaws of 1R045 into the
gaps between Drill chuck S10 and
Ball bearing 6806DDW.
And turn the handle of 1R045
clockwise.
Now Drill chuck S-10
is disassembled as
illustrated right.
1R346
Drill chuck S10
Key 4
Spiral bevel
gear 26
Ball bearing 6806DDW
Ball bearing
6806DDW Drill chuck S10
Fig. 7

P 4/ 7
[3] DISASSEMBLY/ASSEMBLY
[3]-1. Drill Chuck S10, Spiral Bevel Gear 26 (cont.)
ASSEMBLING
1) If the jaws of Drill chuck are open, make them close for smooth assembling of Ball bearing 6806DDW and Spiral bevel
gear 26. Refer to Fig. 6.
2) Do not forget to assemble Key 4 to Drill chuck S10. Refer to Fig. 7.
3) Do the reverse of the disassembling steps.
Repair
DISASSEMBLING
[3]-2. Spur Gear 29, Spiral Bevel Gear 9
1) Disassemble Bearing retainer, Drill chuck S10 from Gear housing as illustrated in Figs. 2, 3, 4.
2) Disassemble the Gear section as illustrated in Fig. 8.
3) The Gear section is disassembled as illustrated in Fig. 9.
Disassemble Gear housing together with
Gear housing cover from Motor housing
by unscrewing 4x45 Tapping screw.
Remove Gear housing cover
from Gear housing by pulling
off. Pay attention not to lose
Gasket in this step.
Strike the edge of Gear housing
with plastic hammer.
Now Gear section can be removed
from Gear housing.
4x45 Tapping screw (4pcs.)
Gear housing
Gasket
Motor housing
Gear housing cover
Gear housing
Gear housing
cover
Gear section
Fig. 8
Fig. 9
ASSEMBLING
1R269
1R280
1R036
Disassemble Ball bearing 696ZZ
from the shaft of Spiral bevel gear 9
with 1R269.
Ball bearing
608ZZ
Accept Ball bearing
608ZZ with 1R036.
Push Shaft end of Spiral bevel gear 9
to ths surface of Spur gear 29 with
arbor press.
Spiral bevel gear 9
is removed.
Spur gear 29 and Ball bearing
608ZZ are separated.
Applying 1R280 to the shaft end of
Spiral bevel gear 9, press with arbor press.
Spur gear 29
shaft end of Spiral bevel gear 9
Ball bearing 608ZZ
Spur gear 29
Ball bearing 696ZZ
(1) Assemble Ball bearing 608ZZ and Spur gear 29
to Spiral bevel gear 9. (Fig. 10)
(2) Assemble Ball bearing 696ZZ to the shaft end
of Spiral bevel gear 9. (Fig. 11)
(3) Do the reverse of the disassembling steps.
Refer to Fig. 8.
Spur gear 29
< Note >
Rib has to face
Ball bearing 608ZZ.
Ball bearing
608ZZ Ball bearing
696ZZ
Spiral bevel
gear 9
Fig. 10 Fig. 11

P 5/ 7
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-4. Motor Section
DISASSEMBLING
(1) Disassemble Gear housing and Gear housing cover from Motor housing by unscrewing 4x45 Tapping screws. (Fig. 8)
(2) Remove Motor section from Housing set (L) in the order of Figs.12, 13.
(3) When removing Armature from Brush holder, take the steps illustrated in Figs. 14, 15 and 16.
3x16 Tapping screw (5pcs.) Housing set (R) Separate Housing set (R)
from Housing set (L) by
unscrewing 3x16 Tapping
screws.
Yoke
unit
Motor Section
Armature
Switch lever
Remove Switch lever and Link.
Link
Fig. 12 Fig. 13
Shift the tail of Torsion spring from top of Carbon brush
to the notch of Brush holder. Now Carbon brush is free
from the pressure of Torsion spring.
tail of Torsion spring
notch
notch
Torsion spring
Carbon brush
Carbon brush
Tail of Torsion spring
Carbon brush
Carbon brush
Disconnect Carbon brush from
the commutator of Armature by
pulling up.
Then disssemble Armature and
Yoke unit from Brush holder.
Armature
Armature
Pull off Armature from
Yoke unit.
Yoke unit
Yoke unit
Fig. 14
Fig. 15 Fig. 16
Brush holder complete
Remove York unit, Brush holder complete
and Armature in a set when removing
Motor section.
Brush holder

P 6/ 7
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-4. Motor Section (cont.)
ASSEMBLING
Heat sink
Yoke unit
Brush holder
Armature
Protrusion for fitting to
the notch of Yoke unit
notch for fitting
to Housing set (L)
Fitting the notch of Yoke unit to the protrusion of Housing set (L),
assemble the Motor section.
Notch of
Yoke unit
Notch of
Yoke unit
(1) Assemble Armature as illustrated in Fig. 12R.
Note: Pay attention to the position of notch of Yoke unit.
It has to be located on the opposite side of Commutator.
(2) Assemble Brush holder to Armature’s Commutator end.
However, still keep Carbon brush free from the pressure of
Torsion spring of Brush holder in this step.
(2) Assemble the Motor section to Housing set (L) as illustrated
in Figs. 13 and 14.
Commutator
of Armature
Commutator
of Armature
Correct Wrong
Fig. 12R
Fig. 13 Fig. 14
Fig. 12F
Switch side
Housing set (L) Motor Section Housing
set (R)
Housing
set (L)
Carbon brush
Brush
holder
complete
Mount Brush holder complete on
Commutator so that the angle of two
Carbon brushes can be 90 degrees as
illustrated above.
90 degrees
[3]-5. Assembling F/R Change Lever
[3]-6. Disassembling Terminal
Protrusion of Switch
for fitting F/R Change
Lever’s concave
Concave of F/R change lever
for fitting to protrusion of
Switch
FET
Fix F/R Change lever to Switch as illustrated in Fig. 15.
Fig. 15
Fig. 16
Stopper
(for firm connection of Flag Terminal)
1. While pushing Stopper with thin screwdriver,
hitch the Flag terminal with the screwdriver.
Flag terminal
Flag terminal for this product is equipped with Stopper for firm connection. Remove Flag terminal as illustrated in Fig. 16.
2. Pull off the Flag terminal.

P 7/ 7
Circuit diagram
White
Red
When connecting Lead wires of Brush holder
complete to Switch, connect them as follows.
* Lead wire (black) to M2 Terminal
* Lead wire (red) to M1 Terminal
Terminal Switch
Switch lever side
LED circuit
FET
Fig. D-1
Connector of
LED circuit
Connector of
Switch
Color index of lead wires' sheath
Black
Wiring diagram
LED circuit has to be put into Housing set (L)
as illustrated below.
Lead wires of LED Circuit has to be guided in Housing set (L)
as illustrated below, and fix them with Lead wire holders.
Connector of LED circuit is connected with
Connector of Switch in the next step.
Lead wire holders
Wiring of LED Circuit
(before setting Switch and other electrical Parts)
Wiring after setting Switch and other electrical parts
Terminal Switch
Yoke unit
FET Brush holder completeHeat sink
Lead wire holders
Put the extra portion of
Lead wires in this place.
Fix the Lead wires of Connectors
with these Lead wire holders.
Put the extra portion of
Lead wires in this place.
Connector of
Switch side
Connector of
LED side
Armature
Fig. D-2
Fig. D-3
Brush holder complete
Fix Lead wires of Brush holder complete with these Lead wire holders. And put the Lead
wires of Brush holder complete in the position illustrated above, expanding them between
York unit and Brush holder complete.