Makita BO6050 Manual

CONCEPT AND MAIN APPLICATIONS
BO6050 is a 150mm (6”) Random orbit sander developed as the successor to
the current model BO6040.
• Excellent operability thanks to the following:
- Toolless pad change
- Ergonomically designed soft palm grip
- Slim skirt
• Change lever protection system
S
Model BO6050
Orbits per minute: opm= min-1 1,600 - 6,800
Sanding strokes: spm= min-1 3,200 - 13,600
Pad speed in Roto-orbit mode: rpm= min-1 140 - 600
Paper fastening system Hook & loop
Pad diameter: mm (") ø150 (6)
Abrasive disc diameter: mm (") ø150 (6)
Orbit diameter: mm (") ø5.5 (7/32)
Pad brake Yes
Variable speed control Yes
Soft start Yes
Constant speed control Yes
Power supply cord: m (ft) European countries: 4.0 (13.1), Australia, Brazil: 2.0 (6.6)
Other countries: 2.5 (8.2)
Weight according to
EPTA-Procedure 01/2003*1: kg (lbs) 2.6 (5.7)
*1 With Dust nozzle
Dimensions: mm ( " )
Length (L) 330 (13)
Width (W) 155 (6-1/8)
Height (H) 145 (5-3/4)
L
W
H
Voltage (V) Current (A) Cycle (Hz) Continuous Rating (W) Max Output (W)
Input Output
110 7.2 50/60 750 350 750
120 6.6 50/60 --- 350 750
220 3.6 50/60 750 350 850
230 3.5 50/60 750 350 850
240 3.3 50/60 750 350 850
Abrasive disc 150-120*2
Dust nozzle
Side grip
Pad protector
Plastic carrying case
*2 for some countries only
Abrasive discs 150-40/60/80/120/180/240/400
Pad 150 (Soft, hard, super soft)
Pad 130 (Polishing)
Wool pad
Felt pad
Front cuffs 24
Front cuffs 22
Standard equipment
Optional accessories
TECHNICAL INFORMATION
PRODUCT
P 1/ 28
Model No.
Description 150mm (6") Random Orbit Sander
BO6050 November 2015
OFFICIAL USE
for ASC & Sales Shop

P 2/ 28
Repair
[1] NECESSARY REPAIRING TOOLS
Code No. Description Use for
1R004-A removing/ mounting Retaining rings S-6 and S-8
1R027 press fitting Internal gear 34
1R028
1R031
1R032
1R033
1R034
1R045
1R232
1R247
1R252
1R258
1R269
BEARING SETTING PIPE 28-20.2
BEARING SETTING PLATE 8.2
BEARING SETTING PLATE 10.2
BEARING SETTING PLATE 12.2
GEAR EXTRACTOR (LARGE)
PIPE 30
ROUND BAR FOR ARBOR 20-100
ROUND BAR FOR ARBOR 30-100
V BLOCK
BEARING EXTRACTOR
1R273
1R291
RING SPRING 26 SETTING TOOL B
RETAINING RING S AND R PLIERS
RETAINING RING PLIERS ST-2
BEARING SETTING PIPE 18-10.2
BEARING SETTING PIPE 20-12.2 press fitting Ball bearing 6001DDW
press fitting Ball bearing 6804LLU
removing Outer spindle complete
removing Armature
press fitting Ball bearing 6906DDW and Spur gear 31
removing Outer spindle complete
press fitting Spiral bevel gear 43
removing Ball bearing 6906DDW
removing all Ball bearings built in this machine, Magnet sleeve,
Internal gear 34
press fitting Ball bearing 6906DDW
removing Retaining rings S-10, S-30
CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.
Index
[1] NECESSARY REPAIRING TOOLS
[2] Lubrication
[3]-1 Tightening torque for screws
[3]-2. Gear housing complete section
[3]-3. Armature
[3]-4. Top cover section
[3]-5. Front switch lever, Rear switch lever
Circuit diagram
Wiring diagram
P 2
P 3
P 4
P 5-13
P 14-16
P 17-19
P 20-22
P23
P24-28

P 3/ 28
Repair
Item No.
(25)
(25) 4 gGear housing complete Gear room where Spiral bevel gear 43 rotates
(5) (3) (9)
(12)
(12)
Description Lubricant AmountPortion to lubricate
: Makita grease R. No.00
: Makita grease FA No.2
Apply the lubricants as follows.
Makita Grease R No.00 to the portions designated with black triangle.
Makita Grease FA No.2 to the portions designated with gray triangle
[2] LUBRICANT AND ADHESIVE APPLICATION
LUBRICANT
Fig. 1
(15)
(15)
(44)
(44) O ring 26 Whole portion
Gear housing cover complete
(5) Guide plate
(3) a little
a little
a little
4 g
a little
a little
Change plate
(9) Spur gear 31
Internal gear 34 Teeth portion
Plate Flat surface
Surface where Change plate (3) contacts
Surface where Guide plate (5) contacts
Groove portion

P 4/ 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Tightening torque for screws
Screw or Bolt
Fig. 2
3x10 Tapping screw
4x18 Tapping screw
Pad 150 (with M10 Nut)
4x75 Tapping screw fastening Baffle plate (58) to Motor housing (71)
fastening Brush holder (76) to Motor housing (71)
fastening Rear cover (80) to Motor housing (71)
fastening Nozzle complete (82) to Rear cover (80)
screwing to Inner spindle (35)
Screw M4x50
(76)
(77)
(77)
(80)
(81)
(81)
(82)
(82-A)
(82-A)
(58)
(57)
(35)
(42)
(42)
(57)
(57)
(71)
Item
No.
Tightening
torque (N.m)Q’ty
1
1
1
2
2
10.0 - 12.0
1.2 - 1.4
1.8 - 2.2
0.9 - 1.2
0.1 - 0.3
Use for

P 5 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Gear housing complete section
DISASSEMBLING
1. Disassemble Nozzle complete (82),
Pad protector (21), Pad 50 (42).
2. Remove Rubber guard (23).
3. Remove Head cover set R (19)
by unscrewing four 4x18 Tapping
screws (20) and one 4x65 Tapping
screw (18).
Remove Shaft lock complete (30).
< Note >
Compression spring 4 (31) may
remain in Head cover set L (22)
in this step.
Be careful not to lose it when
separating Shaft lock complete.
(82)
Loosen this screw.
(21)
(42)
Fig. 3
Fig. 4
Fig. 5
Fig. 6
(23)
(18)
(20) (30) (19)
(20)
(18)
(31)
(22)

P 6 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Gear housing complete section
DISASSEMBLING
4. Remove Head cover L (22).
5. Remove Top cover section (7) by unscrewing
four 4x16 Tapping screws.
(7)
(12)
6. Disassemble Gear housing complete (25)
by unscrewing four 4x30 Tapping screws (24).
7. Remove Retaining
ring S-10 (41) with 1R291.
The following parts are
removed from Inner
spindle complete.
(36) Cover
(37) Flat washer 10
(38) Thrust needle gauge
(39) O ring 26
(40) Flange
(6)
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Section (7)
(24): 4 pcs.
Screwdriver
(25)
(33)
(41)
(36) (37)
(38) (39) (40) (41)
1R291
< Note >
Internal gear 34 (12) interferes with
Screwdriver.
Unscrew 4x30 tapping screws (24) while
turning Balancer (33).
Inner spindle complete
(22)

P 7 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Gear housing complete section
DISASSEMBLING
9. Remove Retaining ring S-8 (13) with
1R004-A.
10. Remove Internal gear 34 section (12).
11. The following parts are separated from
Gear housing complete (25).
(14) Flat washer 18
(12) Internal gear 34
(15) Plate
(35) Inner spindle complete
< Note >
The legs of 1R269 have to be fixed with
Water pump pliers, because its claw cannot
firmly fit to the groove of Internal gear 34.
See the center photo in Fig. 13.
(13)
8. Unscrewing three M4x12
Pan head screws (34),
remove Balancer (33).
(34) (33)
Fig. 11
Fig. 12
Fig. 13
1R004-A
(14) (15)
1R269
(12)
(35)
(25)
Water pump pliers,
gripping legs of
1R269
(12)
Internal gear 34 Section (12)
(12)
(11)
(10)
(10) Brake ring
(11) Sponge
washer 40
(12) Internal
gear 34

P 8 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Gear housing complete section
DISASSEMBLING
14. Supporting Gear housing complete (25) with 1R032, 1R033, 1R034, remove Outer spindle complete section (29)
by pushing 1R247 with Arbor press. So, Spiral bevel gear 43 (16) is removed from Gear housing complete (25).
12. Remove Ball bearing
6001DDW (32) with 1R269.
<Note> Do not reuse
Ball bearing 6001DDW (32).
13. Unscrew three M4x12
Pan head screws (28).
(32)
Fig. 14
Fig. 15
1R269
(28)
(29)
Do not re-use the parts items designated with this mark, because it is difficult to proceed
the repair without giving them damage or deformation.
Apply 1R032/ 1R033/ 1R034 to three circled portions.
<Note> Do not apply them to Ball bearing.
(25)
1R032
1R033
1R034
(16)
(29)
1R247
(16)
(26) Retaining ring S-30
(27) Ball bearing 6906DDW
(29) Outer spindle complete
(29)
Outer spindle complete section (29)
(26)
(27)
(29)

P 9 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Gear housing complete section
DISASSEMBLING
15. Remove Retaining ring S-30 (26)
with 1R291 from Outer spindle
complete section (29).
16. Supporting Ball bearing 6906DDW (27)
with 1R258, separate the Ball bearing
from Outer spindle complete (29) by
pressing with Arbor press.
Fig. 16
Fig. 17
Fig. 18
ASSEMBLING
(26)
1R291 (26)
1R258 1R258
(27)
(29)
1R273
(27) 1R232
1R232
(27)
(27)
(29)
1R273
1. Set Outer spindle complete (29) on the Base
of Arbor press.
Pass Ball bearing 6906DDW (27) through
Outer spindle complete (29).
See left illustration.
2. Apply 1R232 to Ball bearing 6906DDW (27)
and apply 1R273 on 1R232.
Press the 1R273 with Arbor press.
See right photo.
3. Assemble Retaining ring S-30 (26) with 1R291.
See lower right photo.
(26)
(29)
(29)
(27)

P 10 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Gear housing complete section
ASSEMBLING
5. Insert Outer spindle complete (29)
to Gear housing complete (25).
6. Tighten three M4x12 Pan head screws (34)
to Gear housing complete (25).
Fig. 19
Fig. 20
Fig. 21
(34)
1R252
(29)
(16)
< Note >
Spiral bevel gear 43 (16) cannot rotate smoothly
if it is mounted to the lower position than the edge
of Outer spindle complete (29).
(29)
(25)
(25)
(29)
1R252
(16)
7. Put Spiral bevel gear 43 (16) to
Outer spindle complete (29).
Apply 1R252 to Spiral bevel gear 43 (16).
8. Press 1R252 with Arbor press until the
hole edge of Spiral bevel gear 43 (16)
comes to the same level to the edge of
Outer spindle complete (29).
(29)
Edge of (29)
Hole edge of (16)

P 11 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Gear housing complete section
ASSEMBLING
10. Insert Inner spindle complete (35) into
Outer spindle complete (29).
Fig. 22
Fig. 23
Fig. 24
(32)
1R033
11. Assemble Plate (15).
9. Pass Inner spindle complete (35)
through 1R033.
Put Ball bearing 6001DDW (32) to
Inner spindle (35).
Apply 1R028 to Ball bearing 6001DDW (32).
Press 1R028 with Arbor press.
(32)
(35)
1R028
(29)
(35)
(15)

P 12 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Gear housing complete section
ASSEMBLING
Fig. 25
Fig. 27
Fig. 26
(32)
(12)
12. Support Ball bearing 6001DDW (32)
with 1R034.
Press Internal gear 34 (12) with
Arbor press.
<Note>
Do not press Internal gear 34 (12)
too hard after seating.
1R034
1R027
14. Fasten three M4x12 Pan head screws (34) to
Balancer (33)
13. Assemble Retaining ring S-8 (13) to the groove of
Inner spindle complete (35) with 1R004-A.
(34)
(33)
(13)
1R004-A
(35)

P 13 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Gear housing complete section
ASSEMBLING
Fig. 28
Fig. 31
Fig. 30
Fig. 29
16. Mount Retaining ring S-10 (41) with 1R291.
17. Assemble Gear housing complete (25)
to Motor housing (71) by fastening
it with four 4x30 Tapping screws (24).
18. Adjust Plate (15) so that its notches
cross with the line of Armature shaft
by 90 degrees.
19. Set Change knob (2) to Random orbit mode.
Assemble Top cover (7).
(2)
(25)
line of Armature
shaft four Notches
of Plate (15)
Random orbit mode
(24)
(36)
(37)
(38)
(39)
(40)
(41)
15. Assemble the following parts to Inner spindle (35).
(36) Cover
(37) Flat washer 10
(38) Thrust needle gauge
(39) O ring 26
(40) Flange
1R291
(71)
(35)
(7)

1R004-A (45)
P 14 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -3. Armature
DISASSEMBLING
Fig. 32
Fig. 35
Fig. 34
Fig. 33
(71)
(43)
(81)
1. Disassemble Gear housing complete section. See Fig. 4 - 9.
(81)
(80) 2. Separate Rear cover (80)
by unscrewing one 4x18
Tapping screw (81).
3. Move Spiral spring from
Carbon brush (78) to make
the Carbon brush free from the
Spring.
Remove Carbon brush (78)
by pulling up.
4. Remove Armature together with
Gear housing cover complete (43)
by tapping the edge of Motor
housing (71) with Plastic hammer.
5. Remove Retaining ring S-6 (45)
with 1R004-A.
Now Spiral bevel gear 11 (46)
can be removed.
Spiral spring
(78)
－
(45)
(46)

P 15 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -3. Armature
DISASSEMBLING
Fig. 36
Fig. 38
Fig. 37
(53)
(1) Disassemble Gear housing complete section. See Fig. 4 - 9.
6. Separate Armature (49) from Gear housing
cover complete (43) with 1R045.
7. Remove Flat washer 10 (48) from the
drive end of Armature.
8. Remove Magnet sleeve (55) together with
Self lock 6 (56).
9. Remove Wave washer 6 (54).
10. Remove Labyrinth rubber ring 19 (53).
Remove Ball bearing 607LLB (52) with 1R269.
(52)
(54) (55) (56)
< Note >
Labyrinth rubber ring 19 (53) may remain
in Motor housing.
1R045
(43)
(49)
(48)
(55)
1R269
1R269

(54)
P 16 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -3. Armature
ASSEMBLING
Fig. 39
Fig. 41
Fig. 40
1. Assemble Wave washer 6 (54).
3. Assemble Ball bearing 6000DDW (47)
to Gear housing cover complete (43),
and assemble Armature (49) to Gear housing
cover complete (43) by passing through
Flat washer 10 (48) and Ball bearing
6000DDW (47).
<Note>
Do not forget assembling Flat washer 10 (48).
1R033
2. Press down Self lock 6 (56) until
Wave washer 6 (54) gets flat.
Magnet sleeve (55) is stabilized
between Self lock 6 (56) and Wave
washer 6 (54) by the reaction
of Wave washer 6.
<Note>
Fix the shape of Self lock 6 (56) as drawn
with Long-nose pliers, because
Self lock 6 (56) gets deformed once
pulled out.
(54)
(55)
(48)
(56)
(43)
(49)
(47)

P 17 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -4. Top cover section
DISASSEMBLING
Fig. 42
Fig. 44
Fig. 43
2. Remove Compression spring 5 (4)
with Slotted screwdriver.
<Note>
Set Change knob (2) to Roto-orbit mode.
1. Disassemble Gear housing complete section in the order of Fig. 3 -8.
4. Remove O ring 65 (17) from Top cover (7).
5. Remove Spur gear 31 (9) with 1R045
from Top cover (7).
1R045
3. Unscrew 4x14 Tapping screw (1).
Change knob (2), Change plate (3)
and Guide plate (5) are removed
from Top cover (7).
(2)
(1)
(7)
(7)
(9)
(17)
(3)
(2)
(5)
(4)
Roto-orbit mode.
Slotted
screwdriver
(9)

P 18 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -4. Top cover section
DISASSEMBLING
Fig. 45
Fig. 47
Fig. 46
6. Remove Ball bearing 6804LLU (8)
from Spur gear 31 (9).
7. Consequently, Top cover section is
disassembled as drawn.
2. Supporting Top cover (7) with 1R232,
press Spur gear 31 (9) with Arbor press.
1. Applying 1R031 to Ball bearing
6804LLU (8), press it with Arbor press.
(8)
1R269
Descriptions
(9)
(2)
(1)
(3)
(5)
(7)
(4)
(6)
4
1
1
1
1
1
1
1
1
1
(8)
(9)
(17)
(1) 4x14 Tapping screw
(2) Change knob
(3) Change plate
(4) Compression spring 5
(5) Guide plate
(6) 4x16 Tapping screw
(7) Top cover
(8) Ball bearing 6804LLU
(9) Spur gear 31
(17) O ring 65
Item
No.
Used,
Q’ty
ASSEMBLING
1R031
(8)
1R232
(7)
(9)

P 19 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -4. Top cover section
Fig. 48
Fig. 49
3. Set Guide plate (5) and Change plate (3) to Top cover (7), aligning their holes to Spur gear 31 (9).
4. Set Change knob (2) to Top cover (7), facing its triangle mark to the direction shown in photo.
5. Tighten Change knob with one 4x14 Tapping screw (1) while maintaining direction of Triangle
mark to the same direction in step 4.
7. Demonstrate if Change knob (2) works right
or not by turning it.
(5)
(7)
(9)
ASSEMBLING
6. Fitting protrusion of Change plate (3)
to the groove of Spur gear 31 (9),
assemble Compression spring 5 (4).
Projection of (3)
(3)
groove
of (9)
(9)
(3)
(1)
Triangle mark
(4)
(2)
(2)

P 20 / 28
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -5. Front switch lever, Rear switch lever
Fig. 50
Fig. 52
Fig. 53
Fig. 51
3. Unscrewing two 4x75 Tapping
screws (57), remove Baffle plate (58)
from Motor housing (71).
1. Disassemble Gear housing complete section in the order of Fig. 3 - 8.
2. Disassemble Armature from Motor housing. See Fig. 32 - 34.
7. Lift up Rear switch lever (65).
(57)
DISASSEMBLING
6. Separate Switch knob (61).
Pull out Front switch lever (62).
(57)
(62) (61)
(61)
(58)
(71)
4. Hold Switch knob (61).
5. Push Front switch lever (62)
toward Switch knob (61)
while lifting up it.
(62)
(65) (65)
8. Pull off Rear switch lever (65).