Makita M0910B Mode d'emploi
M0910B
REPAIR MANUAL
Angle Grinder
OFFICIAL USE
For ASC
P 2/ 10
Repair
Apply Makita grease FA. No.2 to the following portions designated with the black triangle to protect parts and product
from unusual abrasion.
[3] DISASSEMBLY/ASSEMBLY
[3]-1. Armature, Spiral bevel gear 13, Ball bearing 629ZZ and Ball bearing 607ZZ
[1] NECESSARY REPAIRING TOOLS
CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.
Code No. Description Use for
[2] LUBRICATION
Fig. 1
Item No. Description
Gear housing complete
O Ring 26
Gear room where Spiral bevel gear 37 engages with Armature’s gear
Whole portion a little
AmountPortion to lubricate
DISASSEMBLING
1R005 Retaining ring pliers RT-2N removing/ mounting Retaining ring R-32
1R026 Bearing setting pipe 16-8.2 removing Spindle from Spiral bevel gear 37
1R217 Ring 22 removing Spindle from Spiral bevel gear 37
1R268 disassembling Shaft lock mechanism
removing Ball bearing 629ZZ/ 607ZZ
Spring pin extractor M3
Bearing extractor1R269
1R281 removing Spindle from Spiral bevel gear 37Round bar for Arbor 7-50
1R291 Retaining ring S & R pliers removing Retaining ring S-12
10 g
3A
3
3A
2. Disconnect Carbon brush from the commutator
of Armature by moving the tail end of the spiral
spring of Brush holder.
Note: No need to remove Carbon brushes in this step.
Spiral spring
4x22 Tapping
screw (4 pcs.)
Gear housing
complete
Motor housing
1. Separate Rear cover by unscrewing
4x18 Tapping screw. 3. Remove Gear housing complete from Motor housing
together with Armature by unscrewing four 4x22
Tapping screws.
4x18 Tapping screw
Rear cover
(1) Separate Gear housing complete together with Armature from Motor housing as drawn in Fig. 2.
3
Fig. 2.
Armature
P 3/ 10
Repair
DISASSEMBLING
M6 Hex nut
Flat washer 9
Wrench 10 Spiral bevel gear 13
4. Pull off Armature from Gear
housing complete. 5. Disassemble Spiral bevel gear 13 from Armature by removing
M6 Hex nut with Wrench 10.
(2) Remove Spiral bevel gear 13 and Ball bearings from Armature. (Fig. 3)
6. Remove Ball bearing 629ZZ and Flat washer 9 from the Fan side using 1R269. And then, remove Ball bearing
607ZZ from Commutator end.
Armature
Fig. 3
M6 Hex nut
Ball bearing
607ZZ 1R2691R269 Ball bearing
607ZZ
Ball bearing
629ZZ
Ball bearing
629ZZ
ASSEMBLING
Assemble by reversing the disassembly procedure. (Refer to Figs. 3 and 2.)
Note in assembling:
When Gear housing complete is assembled to Motor housing,
Spindle must be positioned on the opposite side of Switch lever. (Fig. 4)
Fig. 4
Spindle Spindle
[Wrong]
[Rear view]
[Rear view]
[Correct] Switch lever
Gear housing
complete
Gear housing
complete
[3] DISASSEMBLY/ASSEMBLY
[3]-1. Armature, Spiral bevel gear 13, Ball bearing 629ZZ and Ball bearing 607ZZ (cont.)
Switch lever
P 4/ 10
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-2. Field
DISASSEMBLING
ASSEMBLING
2. Install two 4x22 Tapping screws in the holes on two diagonal
corners of Motor housing. Then remove Field from Motor
housing by tapping on the screw heads alternately.
Note: Do not tap the diagonal corners of Motor housing directly
because the inlaid portion near the diagonal corners is fragile.
1. Disconnect the receptacles from
Brush holders, Terminal block
and Switch. (Refer to Fig. D-1.)
Remove two 4x60 Tapping screws
that secure Field in Motor housing.
Fig. 5
4x22 Tapping screws
(1) Separate gear housing complete together with Armature. (Refer to Fig. 2.)
(2) Remove Filed from Motor housing. (Fig. 5)
Note in disassembling:
Use 4x22 Tapping screws, which are used for fastening Gear housing complete to Motor housing, as a jig
when disassembling Field. (Fig. 5)
Note in assembling:
Field must be mounted to Motor housing so that its Lead wires can be routed out through the openings of Motor housing.
(Refer to Fig. D-2.)
4x60 Tapping screw (2 pcs.)
Fig. 6
M4x16
Pan head screws
Bearing box
1. Unscrew four M4x16 Pan head screws, then separate
Bearing box from Gear housing complete. 2. Remove Retaining ring S-12 with 1R291.
(1) Disassemble Bearing box from Gear housing complete, then remove Retaining ring S-12 from Spindle. (Fig. 6)
[3]-3. Spiral bevel gear 37 and Ball bearing 6201DDW
Retaining ring S-12
DISASSEMBLING
1R291
P 5/ 10
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-3. Spiral bevel gear 37 and Ball bearing 6201DDW (cont.)
DISASSEMBLING
Fig. 7
1R026
1R281
1R217
approx.
10 mm
(2) Disassemble Spindle as drawn in Fig. 7.
(3) Disassemble Ball bearing 6201DDW from Bearing box. (Fig. 8)
Bearing box
Spindle
Spiral bevel
gear 37
2. Push Spindle out a little by tapping 1R026
carefully using arbor press with a down stroke
of approx.10mm long. Then remove 1R026.
1. Put Bearing box on 1R217,
then put 1R026 over the
stepped portion of Spindle.
Spindle
Fig. 8
1R005
4. Remove Retaining ring R-32 with 1R005. 5. Remove Ball bearing 6201DDW from Bearing box.
In this step, Flat washer 12 is removed.
Ball bearing 6201DDW
Flat washer 12
Retaining ring R-32
3. Put 1R281 on Spindle.
Then, press 1R281 to
remove Spindle from
Spiral bevel gear 37.
Note:
Do not reuse removed Ball bearing 6201DDW
because it is damaged in this step.
P 6/ 10
Repair
ASSEMBLING
Fig. 9
1R028
Ball bearing
6201DDW
Flat washer 12
Spindle
1R217
1. Mount Flat washer 12
on Spindle. 2. Set Spindle on 1R217, then set new
Ball bearing 6201DDW and 1R028
as drawn below. Then press-fit the
ball bearing on Spindle.
Note: Do not reuse the removed Ball
bearing 6201DDW.
Bearing box
1R005
Ball bearing 6201DDW and Spiral bevel gear can be assembled as described in Fig. 9.
1R028
4. Install Retaining ring R-32 with 1R005 to secure Ball
bearing 6201DDW.
Then, apply a little amount of Grease/ Lubricant* to
the drum portion of Spindle.
Retaining ring R-32 Spiral bevel
gear 37
6. Install Retaining ring S-12 with 1R291.
Spindle
3. Set Bearing box on 1R217,
then set 1R028 on Spindle
as drawn below.
Then press-fit Spindle into
Bearing box by pressing 1R028
with arbor press.
1R028
Bearing box
Spindle
*Important:
Grease/ Lubricant is necessary for
smooth press-fitting of Spiral bevel
gear 37 onto Spindle without tilting
in the next step 5.
5. Set Bearing box on 1R217, then set 1R028 on
Spiral bevel gear 37 as drawn below.
And then, press-fit the Gear on Spindle of
Bearing box while keeping Spiral bevel gear 37
in parallel with 1R217.
1R217
Bearing box
[3] DISASSEMBLY/ASSEMBLY
[3]-3. Spiral bevel gear 37 and Ball bearing 6201DDW (cont.)
P 7/ 10
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-5. Shaft lock
DISASSEMBLING
(1) Separate Gear housing complete and Armature from Motor housing. (Refer to Fig. 2)
(2) Pull off Armature from Gear housing complete. (Refer to Fig. 3)
(3) Remove Bearing box by unscrewing four M4x16 Pan head screws. (Refer to Fig. 6)
(4) Disassemble Shaft lock mechanism as described in Fig. 10..
1. Put Gear housing complete on 1R258.
Insert 1R268 through the small hole of Pin cap onto
Shoulder pin 4. And then, remove Shoulder pin 4 from
Gear housing complete by tapping 1R268 with hammer.
2. Slowly remove 1R268 from Pin cap.
Be careful not to lose Compression spring 8
as the compressed spring may fly away.
Shoulder pin 4
Pin cap
Compression spring 8
Fig. 10
1R268
1R258
Pin cap
plastic dust
Shoulder pin 4
ASSEMBLING
Assemble Shaft lock. (Fig. 11)
Fig. 11
3. Assemble Compression spring 8
and new Pin cap by pressing them
to Shoulder pin 4.
2. Insert Shoulder pin 4 through
the hole of Gear housing
complete.
Pin cap
Compression
spring 8
Shoulder pin 4
Note: Do not reuse the removed Pin cap.
1. Remove the plastic dust
from Shoulder pin 4 that
all the plastic dust produced
in the disassembling process.
Note: Do not reuse the Pin cap removed
from Gear housing complete, because
the inside surface of Pin cap is damaged
by Shoulder pin 4 when it is removed.
Circuit diagram
Wiring diagram
P 8/ 10
Fig. D-1
Fig. D-2 Fig. D-3
White
Red
Blue
Brown
Field
[viewed from
Rear cover side]
Power supply cord
Noise suppressor
Brush holder A Name plate
side
maktec logo
side Brush holder B
Closed end splice is used
for some countries instead
of Terminal block.
Terminal block
The space for Switch Marking
[Top]
[Bottom]
Fasten each Insulated terminals of Lead wires to Switch
so that the wire connection portion is positioned to the
bottom. And set Switch facing its Marking to the top.
Motor housing viewed
from Rear cover side
Wiring in Motor housing
Guide out Field lead wires from the opening
of Motor housing as drawn below.
Switch
Colour index of lead wires' sheath
Black
1
2
Wiring to Switch
Switch lever
Insulated
terminals
maktec logo
side
maktec
logo
Name plate
side
Noise suppressor is not used
for some countries.
White lead wire is used
for some countries
instead of Blue.
Black lead wire is used
for some countries
instead of Brown.
[ ]
Insulated terminal (M4)
Circuit of Switch
12
* AWG: American Wire Gauge
20 AWG*
20 AWG*
18 AWG*
Magnet wire
Straight receptacle
(without lock,
#110, t=0.8mm)
Magnet wire or
Lead wire (18 AWG*)
Wiring diagram P 9/ 10
Fig. D-4
Top view
Lead wire holder
Terminal block
Switch
Rib C
Rib D
Route Field lead wire (white) to
Terminal block through the space
between Ribs B and C as well as
C and D.
Rib B
Rib A
Switch
Closed end splice
When Terminal block is used
When Closed end splice is used
Route Field lead wires (white,
black) inside of Rib A.
When fixing Lead wires in this
Lead wire holder, Field lead
wire (white) must be put over
Field lead wire (black).
Lead wire holder
Pull out Field lead wires (white, black)
so that they are tightened in Motor
housing and put the slack portion of
White lead wire in this place.
When fixing Lead wires in this
Lead wire holder, Field lead
wire (white) must be put over
Field lead wire (black).
Pull out Field lead wires (white, black)
so that they are tightened in Motor
housing and put the slack portion of
these lead wires in this place.
Wiring diagram
P 10/ 10
Fig. D-5
Fig. D-6
Switch
Switch
Rib D
Ribs F
Field lead wire (red)
Route Field lead wires
(black, red) inside of
Ribs F.
Rib A
Rib E
Noise suppressor
Route Field lead wires (black,
red) inside of Rib F.
Rib F
Groove
Rib D
Rib E
Left side view
Bottom view
Right side view
Route Lead wires of
Power supply cord
inside of Rib E.
Route Lead wires of Field
(red), *Noise suppressor
(white) inside of Rib D.
*Noise suppressor is not used for some countries.
*Noise suppressor is not used for some countries.
Route Field lead wires
(white, black) inside of
Rib A.
Route Lead wires of Power
supply cord inside of Rib E.
Put Noise suppressor to
Motor housing while facing
its Lead wires connecting
portion to this side.
When fixing Field lead wires
in this groove, Red lead wire
must be put over black lead wire.
Pull out Field lead wires (red, black)
so that they are tightened in Motor
housing and put the slack portion of
Red lead wire in this place.
Route Lead wires of Field
(red), *Noise suppressor
(white) inside of Rib D.
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