Makita BHR200S Manual

Models No.
Description
NEW TOOL
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 / 23
BHR200S
Cordless Rotary Hammer 20mm (3/16")
The above mentioned model is 20 mm (13/16") cordless
rotary hammer. Its brief benefits and features are as follows.
* Equipped with newly developed 24V/3.0Ah Ni-MH battery.
* 3 working modes, they are "rotation with percussion",
"percussion only" and "rotation only".
* SDS-plus bit can be used
Below listed standard type model is only available.
L
CH
H
W
Model No. Battery Charger Plastic case
BHR200SF B2430, Ni-MH 24V/3.0Ah DC24SA Yes Dimensions : mm ( " )
Width ( W )
*Height ( H )
86 (3-3/8)
235 (9-1/4)
Length ( L ) 316 (12-1/2)
Center height (CH) 35 (1-3/8)
*Height ( H ) : 210mm (8-1/4") when battery
B2417 is attached.
Voltage (V)
*Capacity (Ah)
*Energy (Wh)
24
3.0
72
0 - 1,100
0 - 4,700
SDS-plus
10 (3/8)
20 (13/16)
13 (1/2)
27 (1-1/16)
Yes
Yes
Battery
Electric brake
Yes
Reverse switch
Clutch
Concrete
Steel
Wood
No load speed : (min-1= rpm)
Blows per min : (min-1= bpm).
Bit type
Diameter of bit shank : mm ( " )
Capacity : mm ( " )
*Capacity (Ah): 1.7Ah when battery B2417 is attached.
*Energy (Wh) : 40.8Wh when battery B2417 is attached.
* Depth gauge (Stopper pole) ............................... 1 pc.
* Grease for bit .................................................... 1 pc.
* SDS-plus type TCT. hammer bit
4.0mm(5/32") - 20mm(13/16")
* Bull point
* Cold chisel
* Scaling chisel
* Grooving chisel
* Drill chuck assembly
* Chuck key S13
* Grease for bit
* Dust cup 5
* Dust cup 9
* Blow out bulb
* Chuck adapter assembly
* Battery B2430
* Battery B2417
* Charger DC24SA
* Dust extractor attachment
* Foot for battery B2417

Features and benefits P 2 / 23
3 mode change lever for
* Rotation with percussion,
* Rotation only
* Percussion only
All of competitors' models are 2 mode type, or
a chisel adapter is required, when the machine is
operated as a percussion hammer.
One touch slide lock chuck
for quick bit replacement
Comfortable work thanks
to incredible low vibration
When operation with
battery B2417 (small type),
foot can be removed.
When operation with
battery B2430 (large type),
foot can be attached.
Foot
Removable foot for flat bottom. Newly developed 24V Ni-MH battery
We can provide 2 kinds of Ni-MH batteries
for BHR200S. They are,
* Battery B2417, 1.7Ah (optional accessory)
* Battery B2430, 3.0Ah
Long life D/C motor with
externally accessible carbon
brush
D-form handle for efficient
transmission of pressure
power to the tip of bit
Palm-fitly soft grip

Comparison of products P 3 / 23
Model No.
Comparison No.1
MAKITA
BHR200S A
Spec.
24
3.0 1.7
1.46 0.98
72 40.8
60 30
20 (13/16)
27 (1-1/16)
Battery
Voltage (V)
Capacity (Ah)
Charging time (min.)
Drilling in
Energy (Wh)
Weight : Kg
Cell Ni-MH
concrete : mm (")
Energy of blow
steel : mm (")
wood : mm (")
Working mode
Weight
Externally accessible
carbon brush
No load speed
: (min -1= rpm)
Blows per min
: (min -1= bpm).
calculated by
our own method
Figure
on catalog
Figure
on catalog: Kg (lbs)
Chuck system
One touch
slide lock
Two touch
slide lock
Revolving lock
Plastic carrying case
Standard equipments Grease for bit
Depth gauge
Dimensions
Length : mm
(")
Height : mm
(")
Width : mm
(")
measured
by us : Kg (lbs)
13 (1/2)
0 - 1,100
0 - 4,700
2.1 J
2.1 J
2.0 J 2.2 J
2.0 J 2.0 J
20 (13/16)
10 (3/8)
0 - 1,000 0 - 820
0 - 4,400 0 - 4,010 0 - 4,200
1.3 J
316
3 modes * 2 modes
Yes No No No
Yes Yes Yes Yes
(12-1/2)
235
(9-1/4)
86
(3-3/8)
4.09
(9.02)
4.0
(8.8)
3.58
(7.89)
3.5
(7.7)
316
(12-1/2)
210
(8-1/4)
86
(3-3/8)
329
(13)
233
(9-1/8)
72
(2-13/16)
4.18
(9.22)
4.2
(9.3)
3.54
(7.80)
3.5
(7.7)
329
(13)
216
(8-1/2)
24 24 24
3.0 1.7
1.96 1.32
72 40.8
27 15
20 (13/16) 16 (5/8)
Ni-Cd
2.5 2.0 1.7
1.95 1.35
1.26
60 40.8
65 60
45
Ni-Cd Ni-Cd
72
(2-13/16)
398
(15-5/8)
196
(7-3/4)
116
(4-9/16)
4.98
(10.98)
4.8
(10.6)
4.29
(9.46)
4.2
(9.3)
398
(15-5/8)
196
(7-3/4)
77
(3)
3.98
(8.77)
4.2
(9.3)
355
(14)
215
(8-1/2)
100
(3-15/16)
2 modes
Depth gauge Dust cup
Grease for bit
Depth gauge
Cleaning cloth
48
20 (13/16)
13 (1/2)
30 (1-3/16)
0 - 1,100
2 modes
Grease for bit
Depth gauge
* 2 modes :In case of Competitor A, a chisel adapter (optional accessory) is required to be operated
as a demolition hammer.
Competitor A Competitor B Competitor C
B C

Comparison of products P 4 / 23
Model No. MAKITA
BHR200S
Spec.
24
3.0 1.7
1.46 0.98
72 40.8
60 30
20 (13/16) 20 (13/16)
27 (1-1/16)
Battery
Voltage (V)
Capacity (Ah)
Charging time (min.)
Drilling in
Energy (Wh)
Weight : Kg
Cell Ni-MH
concrete : mm (")
Energy of blow
steel : mm (")
wood : mm (")
Working mode
Weight
Externally accessible
carbon bruch
No load speed
: (min -1= rpm)
Blows per min
: (min -1= bpm).
calculated by
our own method
Figure
on catalog
Figure
on catalog: Kg (lbs)
Chuck system
One touch
slide lock
Two touch
slide lock
Revolving lock
Plastic carrying case
Standard equipments
Grease for bit
Depth gauge
Grease for bit
Depth gauge
Depth gauge
Dimensions
Length : mm
(")
Height : mm
(")
Width : mm
(")
measured
by us : Kg (lbs)
13 (1/2)
27 (1-1/16)
13 (1/2)
0 - 1,100
0 - 4,700
0 - 1,150
0 - 4,400
2.1 J 2.9 J 2.2 J
2.1 J
316
3 modes 2 modes 2 modes
Yes No No
Yes Yes Yes
(12-1/2)
235
(9-1/4)
86
(3-3/8)
4.09
(9.02)
4.0
(8.8)
3.58
(7.89)
3.5
(7.7)
316 291
(12-1/2)
210
(8-1/4)
86
(3-3/8)
24 24
3.0
2.0 2.0
1.31 1.371.4
72
48 48
15 18
22
20 (13/16)
Ni-MH
0 - 950
0 - 4,600
Comparison No.2
Ni-Cd Ni-Cd
(11-1/2)
291
(11-1/2)
(7-7/8) (7-7/8)
68 107
(2-11/16)
3.45
(7.6)
3.6
(7.9) 3.6
(7.9)
3.54
(7.8)
(4 -1/4)
199 199
292
(11-1/2)
(8-1/4)
100
(3-15/16)
3.79
(8.36)
3.7
(8.2)
210
Dust cup
Competitor D Competitor E
DE

Comparison of products P 5 / 23
Comparison in working speed, and working amount per one fully charged battery
Working speed
Fast
Slow
Drilled holes with one fully charged battery
Diameter of equipped bit : 6.5mm
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0 Bit diameter: 6.5 mm Depth of hole : 40 mm
MAKITA
BHR200S
Competitor A
Model A Competitor E
Model E
Competitor D
Model D Competitor C Model C Competitor B
Model B
0
20
40
60
80
100
120
140
160
180
200 Bit diameter: 6.5 mm Depth of hole : 40 mm
MAKITA
BHR200S
Depth of hole : 40 mm
1.7Ah 3.0Ah 1.7Ah 3.0Ah 2.0Ah 2.0Ah3.0Ah 1.7Ah 1.7Ah 2.5Ah
4.6 5.1 4.8 4.5
5.3
6.1
64 67 59
94
57 43
Time : sec./ 40mm
Holes
111
148
108
71
Competitor A
Model A Competitor E
Model E
Competitor D
Model D Competitor C Model C Competitor B
Model B

Comparison of products P 6 / 23
Working speed
Fast
Slow
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0 Bit diameter: 8.5 mm Depth of hole : 40 mm
MAKITA
BHR200S
6.2
7.4
5.8 5.9 6.4
7.6
Drilled holes with one fully charged battery
0
20
40
60
80
100
120
140
160
180
200 Bit diameter: 8.5 mm Depth of hole : 40 mm
MAKITA
BHR200S
1.7Ah 3.0Ah 1.7Ah 3.0Ah 2.0Ah 2.0Ah3.0Ah 1.7Ah 1.7Ah 2.5Ah
50 49 44
78
47 36
Time : sec./ 40mm
Holes
88
102
80
60
Competitor A
Model A Competitor E
Model E
Competitor D
Model D Competitor C Model C Competitor B
Model B
Competitor A
Model A Competitor E
Model E
Competitor D
Model D Competitor C Model C Competitor B
Model B

Comparison of products P 7 / 23
Fast
Slow
MAKITA
BHR200S
Bit diameter: 12.5 mm Depth of hole : 40 mm
Time : sec./ 40mm
0.0
2.0
4.0
6.0
16.0
14.0
12.0
10.0
8.0
0
10
20
30
40
50
60
70
80
90
100
MAKITA
BHR200S
1.7Ah 3.0Ah 1.7Ah 3.0Ah 2.0Ah 2.0Ah
3.0Ah 1.7Ah 1.7Ah 2.5Ah
Holes
Bit diameter: 12.5 mm Depth of hole : 40 mm
8.5 8.0 7.0
9.7
7.8
9.0
Working speed
Drilled holes with one fully charged battery
38
67
43
52
88
37 31
68
39
50
Competitor A
Model A Competitor E
Model E
Competitor D
Model D Competitor C
Model C Competitor B
Model B
Competitor A
Model A
Competitor E
Model E
Competitor D
Model D Competitor C Model C Competitor B
Model B

Comparison of products P 8 / 23
Fast
Slow
MAKITA
BHR200S
Bit diameter: 14.5 mm Depth of hole : 40 mm
Time : sec./ 40mm
0.0
2.0
4.0
6.0
16.0
14.0
12.0
10.0
8.0
0
10
20
30
40
50
60
70
80
90
100
MAKITA
BHR200S
1.7Ah 3.0Ah 1.7Ah 3.0Ah 2.0Ah 2.0Ah
3.0Ah 1.7Ah 1.7Ah 2.5Ah
Holes
Bit diameter: 14.5 mm Depth of hole : 40 mm
9.9 10.5
8.7
11.3
9.4
12.2
Working speed
Drilled holes with one fully charged battery
32 32
55
31
40
64
29 23
54
37
Competitor A
Model A Competitor E
Model E
Competitor D
Model D Competitor C Model C Competitor B
Model B
Competitor A
Model A
Competitor E
Model E
Competitor D
Model D Competitor C
Model C Competitor B
Model B

Comparison of products P 9 / 23
Fast
Slow
MAKITA
BHR200S
Bit diameter: 16.5 mm Depth of hole : 40 mm
Time : sec./ 40mm
0.0
2.0
4.0
6.0
16.0
14.0
12.0
10.0
8.0
0
10
20
30
40
50
60
70
80
90
100
MAKITA
BHR200S
1.7Ah 3.0Ah 1.7Ah 3.0Ah 2.0Ah 2.0Ah
3.0Ah 1.7Ah 1.7Ah 2.5Ah
Holes
Bit diameter: 16.5 mm Depth of hole : 40 mm
10.9
13.1
10.5
12.0 11.7
15.1
Working speed
Drilled holes with one fully charged battery
28 26
49
26
36
53
25 18
45
30
Competitor A
Model A Competitor E
Model E
Competitor D
Model D Competitor C Model C Competitor B
Model B
Competitor A
Model A Competitor E
Model E
Competitor D
Model D Competitor C Model C Competitor B
Model B

Comparison of products P 10 / 23
Chipped amount with one fully charged battery
MAKITA
BHR200S
2 Kg
1 Kg
0
4 Kg
3 Kg
Chipped amount
12.5 minutes
3.05 Kg
18.5 minutes
2.95 Kg
Vibration under loaded condition
Measured and evaluated in conformity with CE Regulations.
Sound pressure level
Measured and evaluated in conformity with CE Regulations.
10.0 m/s2
12.0 m/s2
14.0 m/s2
16.0 m/s2
18.0 m/s2
20.0 m/s2
2.0 m/s2
4.0 m/s2
6.0 m/s2
8.0 m/s2
Vibration
MAKITA
BHR200S
80 dB
60 dB
100 dB
20 dB
10 dB
40 dB
90 dB
70 dB
30 dB
50 dB
MAKITA
BHR200S
Sound pressure level
13.0
16.2
16.3
18.5
14.0 14.7
89 89 87
90
91 95
Working mode : Rotation with percussion
Working mode : Rotation with percussion
Competitor A
Model A Competitor E
Model E
Competitor D
Model D Competitor C Model C Competitor B
Model B
Competitor A
Model A Competitor E
Model E
Competitor D
Model D Competitor C Model C Competitor B
Model B
Competitor A
Model A

Repair P 11 / 23
Lubrication
All of O rings built in BHR200S
Put grease on the following places in order to protect parts and machine from unusual abrasion and overheating.
Recommendable is our genuine grease, "MAKITA Grease R No.1".
Teeth of all gears built in BHR200S
(1) Cap 31 Inside of rip portion
(9) Pin 8
(12) Oil seal 25
(15) O ring case
(19) Impact bolt
(21) Plane bearing 26
(22) Tool holder
(23) Steel ball 7.0
(29) Striker
(30) Piston cylinder
(40) Cam shaft
Inside of oil seal
Inside of plane bearing 26
Whole Inner part of tool holder
Grooved portion for O ring
Bottom of cylindric portion
Grooved portion inside of O ring case
Grooved portion for O ring
Inside of perforated holes
(41) Swash bearing 10 Cam and shaft
Whole part
(38) Spur gear 10
(39) Clutch cam
Cam portion
Cam portion

Repair P 12 / 23
Chuck cover
< 1 > Removing chuck section
Removing
(1) Pull down chuck cover and detach cap 31 as illustrated in Fig. 1, and then, remove chuck cover and
compression spring 38 as illustrated in Fig. 1A.
(2) Lever up ring spring 17 with screwdriver, expanding it with 1R004 "retaining ring plier" and remove
ring spring 17 from tool holder as illustrated in Fig. 2.
(3) Remove ring spring 30.5 from chuck ring, and then, detach spring guide and compression spring 35 as illustrated
in Fig. 3.
Fig. 1
Cap 31
Chuck cover
Compression spring 38
Fig. 1A
Ring spring 17
Tool holder
Fig. 2.
Ring spring 17
Chuck ring
Leaf spring 26
installed on
chuck ring
Ring spring 30.5
Spring guide Compression spring 35
Fig. 3.
(4) Remove leaf spring 26 with 1R003 "retaining ring plier" from chuck ring, and then, detach pin 8
as illustrated in Fig. 4. Remove chuck ring, steel ball 7.0 and guide washer from tool holder
as illustrated in Fig. 4A.
Fig. 4
Leaf spring 26 Pin 8
Chuck ring Tool holder
Steel ball 7.0
Chuck ring
Fig. 4A
1R004 Retaining ring plier
Guide washer
Pull down
chuck cover.
Remove from
chuck ring expanding
with 1R003
"retaining ring plier".

Repair P 13 / 23
< 2 > Disassembling housing.
(1) Pull down chuck cover and detach cap 31 as illustrated in Fig. 1.
(3) Remove foot by unscrewing 2 pcs. of tapping screws 4x18, if it is attached.
(4) Dismount housing R from housing L by unscrewing 14 pcs. of tapping screws 4x18.
(2) Set change lever to the "rotation with percussion" mode as illustrated in Fig. 5.
Otherwise, cam shaft is lifted up and ball bearing 606ZZ, cup washer
and conical compression spring 7-14 easily come out from housing L.
See Fig. 5A.
Fig. 5
< 3 > Disassembling clutch section.
(1) Disassemble the chuck section as per < 1 > and < 2 >, and take out tool holder unit from housing.
See Fig. 6.
(2) Remove the following parts from tool holder.
* Oil seal 25 * Ball bearing 6905LLB * Plane bearing 26
* Piston joint * 2 pcs. of flat washers 12 * Piston cylinder
* Striker
Ball bearing 6905LLB can be easily removed by using 1R045 "Large gear extractor".
Housing L
Ball bearing 606ZZ
Cup washer
Conical compression
spring 7-14
Fig. 5A
Tool holder.
Ball bearing 6905LLB
Oil seal 25 Plane bearing 26
Piston join
Piston cylinder Flat washers 12
Flat washers 12
Striker
Flat washer 29
Compression spring 29
Tool holder.
Flat washer 29 Compression spring 29
Spur gear 49
Plane bearing 26
Ball bearing 6905LLB
Ring spring 26 Piston cylinder
Piston joint
Fig. 6
Fig. 7
Ring spring 26

Repair P 14 / 23
(3) Expand ring spring 26 with 1R045 "retaining ring plier", So the ring spring 26 is to be pushed out from
the groove of tool holder by compression spring 29. And then, it can be removed with screwdriver.
(4) Remove spur gear 49 from the tool holder.
< Note > Remove ring spring 26 putting tool holder unit on the working table as illustrated in Fig.8.
Otherwise, the parts on the tool holder are ejected together with compression spring 29.
Ring spring 26
Flat washer 29
Compression spring 29
Working table
Spur gear 49
Spur gear 49
Fig.8
Fig. 9
< 4 > Disassembling impact bolt
(1) Disassemble the chuck section as per < 1 >, < 2 > and < 3 >, and take out tool holder unit from housing.
See Fig. 6.
(2) If the cut section of ring spring 21 is located in the holes of tool holder as illustrated in Fig. 10,
set the ring spring 21 as illustrated in Fig. 10A by sliding its cut section with slotted head screwdriver.
O ring case
Fig. 10
Cut section of
ring spring 21
* The same hole is bored on the opposite side of tool holder.
O ring case
Fig. 10A
Ring spring 21
Inside groove

Repair P 15 / 23
(3) Insert a slotted head screwdriver between ring spring 21 and O ring case as illustrated in Fig. 11.
And push out the ring spring 21 from the inside groove of tool holder, with the slotted head screwdriver
O ring case
Fig. 11
Fig. 12Fig. 12
Ring spring 21
(4) Insert 1R236 "round bar for arbor 7mm" in tool holder and remove the following parts from tool holder
by pressing with arbor press. See Fig. 12. After removing, clean the inside of tool holder in order to prevent
O ring's wearing away.
* Ring spring 21
* O ring case with O ring 11
* O ring 12
* Ring 12
* Impact bolt
1R236
"Round bar for arbor 7mm"
< Note >
Press "round bar for arbor 7mm" vertically.
Otherwise, impact bold can not be removed,
because "the round bar for arbor" may sticks
into the space between the tool holder
and impact bolt as illustrated in Fig. 12A.
Fig. 12A
< 5 > Removing swash bearing 10
(1) Disassemble housing as per < 2 >, and then, take out the cam shaft unit from housing L.
(2) Remove ring 6 and ball bearing 626DDW with 1R269 "bearing extractor" as illustrated in Fig. 13.
1R269 "Bearing extractor"
Ring 6
Ball bearing 626DDW
Fig. 13
In case may be, you can remove the ring spring 21 by hitting the screwdriver.

Repair P 16 / 23
(3) Hold zerol bevel gear 32 with 1R022 "bearing extractor plate" as illustrated in Fig. 14.
And press cam shaft with arbor press. Swash bearing can be removed from cam shaft.
1R022 Bearing extractor plate
Fig. 14
< 6 > Removing change lever
(1) Disassemble housing as per < 2 >, and then, take out the cam shaft unit and tool holder unit
from housing L.
(2) Set change lever to percussion mode as illustrated in Fig. 15.
Fig. 15
< Note > It is impossible to remove change plate
in the other mode.
(3) Remove change plate and compression spring 4, And detach guide plate by unscrewing
2 pcs. of tapping screws 4 x 12 as illustrated in Fig. 16.
(4) Detach retaining ring S-18, And pull out change lever with pressing lock button as illustrated in Fig. 16.
Compression spring 4
Guide plate
Tapping screws 4 x 12
Change plate
Retaining ring S-18
Change lever
Lock button
Fig. 16
Zerol bevel gear 32

Repair P 17 / 23
< 7 > Removing armature
(1) Disassemble housing as per < 2 >, and then, take out brush holder on housing R side, by unscrewing
2 pcs. of tapping screws 4 x 18 as illustrated in Fig. 17. ( No need to remove brush holder assembled
in housing L.)
(2) Remove armature together with yoke unit
as illustrated in Fig 17.
< Note > Ball bearing 626DDW attached on
the commutator side, is not
assembled by pressing.
Be careful not to lose ball
bearing 626DDW, when removing
armature.
Fig. 17
Armature (including zerol bevel gear 11,
ball bearing 608LLU, fan 64, and
ball bearing 626DDW)
Yoke unit
Brush holder
on housing R side
Brush holder
Assembling
< 8 > Assembling armature
(1) Insert armature into yoke unit as illustrated in Fig 18.
< Note > Armature is dragged into yoke unit easily, with its very strong magnetic force.
Be careful not to damage the armature wire, zerol bevel gear 11 and commutatror
in this process.
Fig. 18
Fig. 19
(2) Assemble yoke unit and armature to housing L
(3) Attach brush holders to housing L, and fasten them with 2 pcs. of tapping screw 4 x 12.
Cut : Fit this cut on the rib of housing L.
Housing L

Repair P 18 / 23
< 9 > Assembling equipment for mode change
(1) Attach compression spring 4, lock button and O ring 17 to change lever as illustrated in Fig.20.
(2) Attach the above change lever to housing L. And assemble retaining ring S-18 as illustrated in Fig.21.
Set the change lever to percussion mode as illustrated in Fig. 21A. Assemble guide plate to housing L with
2 pcs. of tapping screws 4 x 12.
(3) Assemble change plate as follows.
Change lever
Compression spring 4
Lock button
O ring 17 Lock button has to be pressed
into change lever until its hook
engages change lever.
Fig.21
Fig.20
Retaining ring S-18
Change lever
Fig.21A
Change lever set in
percussion mode
1. Set compression spring 4 to change plate as illustrated in Fig.22A.
2. Set compression spring 4 assembled on change plate, to guide plate as illustrated in Fig. 22B
3. Mount the whole change plate on guide plate, setting the under edge of the change plate to the rib of
guide plate as illustrated in Fig 22C.
4. Set change lever on the rotary hammer mode to prevent that the change plate slips off from
the guide plate's rib.
Change plate
Compression spring 4
Guide plate
Top view of the above parts
Compression spring 4
Change plate
Compression spring 4
Change plate
Guide plate
Side view of the above parts
assembled to guide plate
Fig.22A Fig. 22B
Fig 22C
Set the under edge of the change
plate to the rib of guide plate.
Guide plate

Repair P 19 / 23
< 10 > Assembling impact bolt
(1) Assemble O ring 12 (thin type) to impact bolt, and insert the impact bolt deep into tool holder.
< Note > The impact bolt has to be inserted as illustrated in Fig. 23.
Impact bolt
O ring 12 (thin type)
Tool holder Tool holder
Fig. 23
(2) Insert the parts into the tool holder in the following order as illustrated in Fig. 24.
(3) Press ring spring 21 into the tool holder with 1R248
"Round bar for arbor 22mm" until it fits in the groove
which is grooved inside of tool holder. See Fig. 25.
And make sure that the ring spring 21 is fit in the groove.
1. Ring 12 2. O ring 12 (thick type) 3. O ring case in which O ring 11 has been inserted in advance.
Fig. 24
Tool holder
O ring 11
1R248 "Round bar for arbor 22mm"
22mm
Ring spring 21
Press with arbor press.
Fig. 25
Fig. 26
< 11 > Assembling spur gear 49 and other parts to tool holder
(1) Set 1R272 "Ring Spring Setting Tool A" on the tool holder
which is assembled as mentioned in < 10 >. And then set
spur gear 49, compression spring 29 and flat washer 29 as
illustrated in Fig.26.
1R272
"Ring Spring Setting Tool A
Ring spring 26
Set cam bulge of spur gear 49
in the concave portion of tool holder
Spur gear 49
Compression spring 29
Flat washer 29
Ring spring 26 side
Spur gear 49 side
Flat washer 29 has to
be faced as Fig. A,
when assembling. Fig. A
Tool holder
(2) Set ring spring 26 on the 1R272 "Ring Spring Setting ool A" as illustrated in Fig. 26.
1R272
Ring Spring Setting Tool A
< Note > Be careful, not to hurt yourself with this edge, because
it is sharpened.

Repair P 20 / 23
(3) Put 1R273 "Ring Spring Setting Tool B" on the top of tool holder. Press it with arbor press as illustrated
in Fig. 27 to set ring spring 26 in the goove of tool holder.
Fig. 27
Press with arbor press.
1R273
"Ring Spring
Setting Tool B"
Ring spring 26 set in
the tool holder's
groove.
Spur gear 49
Compression
spring 29
Flat washer 29
Tool holder
(4) Make sure that ring spring 26 is set in the groove of tool holder completely.
(1) Assemble the following parts to the tool holder assembled as per < 11 >. See Fig. 28.
< 12 > Assembling tool holder section
* Ball bearing 6905LLB
* Retaining ring S-25 (for shaft)
* Oil seal 25
* Plane bearing 26
* Striker with O ring 15
* Piston cylinder
* 2 pcs. of Flat washers 12
* Piston joint
Tool holder section assembled
as per < 11 >
Ball bearing
6905LLB
Retaining ring S-25
(for shaft)
Oil seal 25
Plane bearing 26
Striker with
O ring 15
Piston cylinder
Piston joint
Flat washers 12
Hammer bit Side Ball bearing 6905LLB side
Oil seal 25 has to be faced as illustrated above.
Ring spring 26
Do not assemble striker with O ring 15,
as illustrated above.