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T ECHNICAL INFORMATION
Model No. HR2020, HR2021, HR2022
PRODUCT
P 1 / 21
Description 20mm (3/4") Rotary Hammer L
CONCEPT AND MAIN APPLICATIONS
The above models are 20mm(3/4") version of HR2440 series
H
rotary hammer. Their performances are much better than competitors
in both drilling and hammer drilling.
Specifications for each new model are; W
HR2020: with variable switch and reverse switch Dimensions: mm (")
HR2021: with variable switch, without reverse switch
HR2022: with single speed switch, without reverse switch Length (L) 352 (13-7/8)
Width (W) 72 (2-13/16)
Height (H) 204 (8)
Specification
Continuous Rating (W)
Voltage (V) Current (A) Cycle (Hz) Max. Output(W)
Input Output
110 6.8 50 / 60 710 340 600
120 6.1 50 / 60 710 340 600
220 3.4 50 / 60 710 340 600
230 3.2 50 / 60 710 340 600
240 3.1 50 / 60 710 340 600
Model No. HR2020 HR2021 HR2022
No load speed : (min -1= rpm) 0 - 1,050 1,050
Blows per min : (min -1= bpm). 0 - 4,050 4,050
Type of bit shank SDS - plus
Chuck ability 10 (3/8)
Steel 13 (1/2
Drilling Wood 32 (1-1/4)
capacity : mm ( " ) TCT. hammer bit 20 (3/4)
Concrete Core bit 54 (2-1/8)
Diamond Wet 65 (2-9/16)
core Dry 65 (2-9/16)
Single blow energy ( J ) 2.2
rotation
Working mode 2 modes rotation+percussion
Variable switch Yes Yes No
Clutch for protecting user from lock of bit Yes Yes Yes
Reverse switch Yes No No
Protection from electric shock by double insulation
Cord length : m (ft) 4(13.1)
Net weight : kg (lbs) 2.3 (5.1)
< Note > When using wet type dia. core, employ HR2020 series models connecting with residual current device.
Standard equipment
* Side grip .................................. 1 pc. * Plastic carrying case ............... 1 pc.
* Stopper pole (Depth gauge) .... 1 pc.
< Note > The standard equipment for the tool shown may differ from country to country.
Optional accessories
* SDS plus TCT. bits 5.5mm(7/32") - 20mm(3/4") * Safety goggle * Dust extractor attachment
* Drill chuck assembly * Bit grease * Diamond core bits (wet and dry)
* Chuck adapter * Blow out bulb 32mm, 38mm, 54mm, 65mm
* Chuck key S-13 * Core bits 32mm, 45mm, 54mm * Water protection collar
* Drill chuck S-13 * Core bit * Various taper shank TCT. bits
* Holder driver * Core bit adapter * Taper shank adapter
* Dust cups 5 and 9 * Rod * Cotter
Features and benefits P 2 / 21
In-line and ergonomical
designed palm fitting grip
Superiority to competitors
in both drilling and hammer drilling
Applicable SDS plus type bits
Quick bit change thanks to
slide lock type drill chuck
Built in torque limiter
Cord guard is not only
tough but also excellent
in flexibility to protect
cable from disconnection.
with 2-modes settings,
rotation rotation + percussion
Comparison of products P 3 / 21
Model No. MAKITA Competitor A
Variable speed+Reverse * HR2020 *HR2410 *A-VR
Specifi- Variable peed * HR2021 *HR2413 * A-V
cations Single peed HR2022 HR2412 A
Power input : W 710 680 500
No load * 0 - 1,050 * 0 - 1,050 * 0 - 1,100
speed: min-1=rpm. 1,050 1,050 1,100
Blows per * 0 - 4,050 * 0 - 4,900 * 0 - 3,900
min. : min-1=bpm. 4,050 4,900 3,900
Bit type SDS-plus SDS-plus SDS-plus
TCT.hammer bit : mm 20 24 20
(") (3/4) (15/16) (3/4)
Concrete
Core bit : mm 54 65
(") (2-1/8) (2-9/16)
Capacity
Diamond **65 65
core : mm Wet (2-9/16) (2-9/16)
(") 65 65
Dry
(2-9/16) (2-9/16)
Steel : mm 13 13 10
(") (1/2) (1/2) (3/8)
Wood : mm 32 32 30
(") (1-1/4) (1-1/4) (1-3/16)
Single blow energy : J 2.2 2.0 1.5
Working mode 2 Modes 2 Modes 2 Modes
R : Rotation R R R
R + P : Rotation+Percussion R+P R+P R+P
Vibration Instruction manual 9 8 11
: m / s2 Measured by us 9 7.8 5.2
Noise Instruction manual 99 103 101
: dB(A) Measured by us 99 103 99
Protection from by double by double by double
electric shock insulation insulation insulation
Cord length : m (ft) 4.0 (13.1) 2.5 (8.2) 4.0 (13.1)
Length : mm 352 371 332
Dimensions
(") (13-7/8) (14-5/8) (13-1/8)
Width : mm 72 70 77
(") (2-13/16) (2-3/4) (3)
Height : mm 204 197 208
(") (8) (7-3/4) (8-3/16)
Net weight : Kg 2.3 2.3 2.3
(lbs) (5.1) (5.1) (5.1)
Diamond Core : mm ( " ) ; When using wet type dia core, employ HR2020 series model connecting
with residual current device.
Comparison of products P 4 / 21
Numbers in graph below are relative values when setting Model A-VR 's capacity as 100.
Testing conditions in concrete
Material : Concrete with pressure strength, 350kg/cm2 80 N
Pressure added to the products : 80 N Concrete
350kg/cm2
Working mode : Rotation + Percussion
Bit diameter : 6.5mm Bit diameter : 8.5mm
MAKITA MAKITA
HR2020 120 HR2020 140
(HR2021) (HR2021)
Competitor A Competitor A
A-VR 100 A-VR 100
For reference only For reference only
MAKITA 120 MAKITA 175
HR2410 HR2410
0 50 100 150 200 250 300 0 50 100 150 200 250 300
Bit diameter : 12..5mm Bit diameter : 20mm
MAKITA MAKITA
HR2020 150 HR2020 180
(HR2021) (HR2021)
Competitor A 100 Competitor A 100
A-VR A-VR
For reference only For reference only
MAKITA 180 MAKITA 265
HR2410 HR2410
0 50 100 150 200 250 300 0 50 100 150 200 250 300
60mm (2-3/8")
Testing conditions in wood
Material : Douglas fir, 60mm (2-3/8") in thickness
Pressure added to the products : 80 N
Working mode : Rotation only
Auger bit diameter : 24mm Auger bit diameter : 32mm
MAKITA MAKITA
HR2020 110 HR2020 100
(HR2021) (HR2021)
Competitor A Competitor A
100 100
A-VR A-VR
For reference only For reference only
MAKITA 115 MAKITA 125
HR2410 HR2410
0 50 100 150 200 250 300 0 50 100 150 200 250 300
Repair P 5 / 21
< 1 > Lubrication
Apply the following MAKITA grease to protect parts and product from unusual abrasion.
* Grease RA No.1(Brown) to the portions marked with black triangle
* Grease FA No.2 to the portions marked with gray triangle
Gear housing
Cap 35 Needle baring
O ring 17
Change lever Piston joint Inner housing
Steel ball 7.0
Tool holder O ring 68
Piston cylinder
Spur gear 51
Helical gear 26
Clutch cam Swash bearing
Spur gear 10
Cap 35 Grease RA No.1 (Brown) Inner lip of bit inserting side
Inner portion where the mechanical parts are installed.
Gear housing Grease RA No.1 (Brown) : 60g
Groove for O ring 17 assembling portion
Needle bearing Grease RA No.1 (Brown) Inner ring
Change lever Grease RA No.1 (Brown) Top of the pins
O ring 17 Grease RA No.1 (Brown) Whole part
Inner portion where contacts tool holder
Spur gear 51 Grease RA No.1 (Brown)
Convex portion of cam
Steel ball 7.0 Grease RA No.1 (Brown) Whole part
Inner portion where contacts piston cylinder
Tool holder Grease RA No.1 (Brown)
The portion where contacts inner housing
Inner portion where contacts striker
Piston cylinder Grease RA No.1 (Brown)
The portion where piston joint is assembled
O ring 68 Grease RA No.1 (Brown) Whole part
Inner portion where contacts tool holder
Inner housing Grease RA No.1 (Brown)
The groove where O ring 68 is assembled
Spur gear 10 Grease FA No.2 Spline portion
Inner portion where contacts cam shaft
Swash bearing 10 The surface where contacts helical gear 26
Grease FA No.2
The portion where balls are installed
Convex portion of cam
Helical gear 26 Grease RA No.1 (Brown) Whole of teeth portion
Repair P 6 / 21
< 2 > Disassembling chuck section
1. Slide chuck cover in the direction of gear housing, and pull out cap 35 by turning. See Fig. 1.
2. Take off ring spring 19. Then, the following parts can be disassembled from tool holder. See Fig. 1A.
* Chuck cover
* Ring 21
3. Take off steel ball 7.0 with which guide washer and conical compression spring 21-29 are held. See Fig. 1A.
Then, guide washer and conical compression spring 21-29 can be disassembled from tool holder. See Fig. 1B.
Ring spring 19
Cap 35 Chuck cover
Steel ball 7.0 Guide washer
Conical compression
spring 21-29
Tool holder
Ring 21
Chuck cover
Gear housing
Fig. 1 Fig. 1A Fig. 1B
< 3 > Assembling chuck section
1. Apply grease to steel ball 7.0 and cap 35 referring to < 1 > Lubrication at page 5.
2. Assemble conical compression spring 21-29 and guide washer, and hold guide washer with steel ball 7.0.
See Fig. 1B and Fig. 1A.
3. Assemble ring 21 and chuck cover to tool holder. And then, hold them with ring spring 19. See Fig. 1A.
4. Slide chuck cover in the direction of gear housing, and assemble cap 35 by turning. See Fig. 1.
Conical compression
< Note in assembling >
spring 21-29
A. Pay attention to the assembling direction
of conical compression spring 21-29. Cap 35 side Gear housing side
The small portion : Gear housing side
The large portion : Cap 35 side
The cut portion
B. The cut portion of ring spring 19 has to come of ring spring 19
to the opposite side of the flat portion of
tool holder.
The flat portion of
tool holder.
Repair P 7 / 21
< 4 > Disassembling change lever
1. Disassemble cap from change lever by twisting the flat head screwdriver inserted between cap and change lever,
as illustrated in Fig. 2.
2. Turn the change lever fully to the direction of rotary hammer mode and pull off change lever from gear housing
as illustrated in Fig 2A.
Change lever
Cap
Fig. 2A
Apply grease to the pin, before assembling.
Approach first from this side.
Fig. 2
Fig. 2B
< 5 > Assembling change lever
1. Apply grease RA No.1 (Brown) to the top of change lever's pin. See Fig. 2B.
< Note > The neglect of the grease to the pin portion can be cause of the damage on the change lever.
during the work in "rotation only" mode.
2. Aligning change lever with the rotary hammer mode, assemble it by pressing to the assembling hole
as illustrated in the above Fig. 2A. And assemble cap by pressing to change lever.
< 6 > Disassembling armature
1. Disassemble handle cover by unscrewing tapping screw 4 x 25. And disassemble carbon brushes
as illustrated in Fig. 3.
2. Separate gear housing together with armature, from motor housing by unscrewing tapping screws 4 x 45
as illustrated in Fig. 3A.
3. Slightly hitting the edge of gear housing with plastic hammer, remove armature from inner housing assembled in
gear housing. See Fig. 3B.
4. Ball bearings of fan side and commutator side can be disassembled with No.1R269 "Bearing extractor (small)".
See Fig. 3C.
Tapping s Gear housing
crew 4 x 45 : 4 pcs.
Inner housing
Gear housing
Brush holder Motor housing
Brush holder Carbon brush
Plastic hammer
Carbon brush
Fig. 4B
3B
Tapping s
Handle crew 4 x 25 : 3 pcs.
Ball bearing
cover
Fig. 3A Armature
Fig. 3
No.1R269 "Bearing extractor (small)"
Fig. 3C
P 8 / 21
Repair
< 7> Disassembling tool holder section
1. Disassemble change lever from gear housing as mentioned in < 4 > Disassembling change lever at page 7.
2. Separate gear housing from motor housing as illustrated in Fig. 3 and Fig. 3A. And disassemble armature
as illustrated in Fig. 3B at page 7.
3. Disassemble inner housing from gear housing as illustrated in Fig. 4.
4. Separate tool holder section from inner housing as illustrated in Fig. 4A. Pay attention, not to lose flat washer 28,
when separating tool holder section.
Tool holder
section
Washer 30 Piston cylinder
Inner housing
Plastic hammer Tool holder
section Flat washer 28
Swash bearing
Swash bearing section
section
Fig. 4 Fig. 4A
5. Ring spring 28 can not be removed without pressing washer 30 down to the spur gear 51 side, because it is
almost covered by washer 30. See Fig. 4B.
6. Disassemble ring spring 28 with retaining ring plier, pressing washer 30 down to the spur gear 51 side as
illustrated in Fig. 4C and Fig. 4D.
7. Disassemble washer 30, compression spring 31 and spur gear 51 from tool holder as illustrated in Fig. 5E.
No. 1R306 Ring spring Ring spring 28
extractor
Round bars
for arbor
Washer 30
Retaining ring Retaining ring
plier plier
Fig. 4B Fig. 4C Fig. 4D
Compression
spring 31
Spur gear 51
Washer 30
Fig. 4E
< 8 > Assembling tool holder section
1. Apply grease to spur gear 51 and tool holder referring to < 1 > Lubrication at page 5.
2. Assemble spur gear 5, compression spring 31 and washer 30 to tool holder as illustrated in Fig. 4E.
3. Pressing the washer 30 down to the spur gear 51 side, with arbor press, assemble ring spring 28 as illustrated
in Fig. 4D and Fig.4C.
4. Assemble flat washer 28 to the position illustrated in Fig. 4A at page 8.
5. Insert piston cylinder of swash bearing section into tool holder. And assemble tool holder section by pressing
into inner housing as illustrated in fig. 4A.
Repair P 9 / 18
< 9 > Disassembling impact bolt
1. Referring to "< 7 > Disassembling tool holder section" at page 8, disassemble ring spring 28, washer 30,
compression spring 31 and spur gear 51 from tool holder. See Fig. 4, Fig. 4A, 4B, 4C, D and 4E.
2. Push the cut portion of ring spring 28 to the out side of the hole as illustrated in Fig. 5 and Fig. 5A.
Ring spring 28 showing its
cut portion Ring spring
Inner
Cap 35 side housing side
O ring case O ring case
Push the cut portion to
the out side of the hole.
Fig. 5 Fig. 5A
Cap 35 side Inner housing side
3. Hold tool holder with "No.1R038 Armature holder" and vise as illustrated in Fig. 5B. Insert screwdriver
between ring spring 28 and O ring case. and push out ring spring 28 from the inner groove as illustrated in Fig. 5C.
Cap 35 side Push out ring spring 28 from
the inner groove.
Inner groove of Cap 35 side
No.1R038 tool holder
Armature holder
O ring case
Ring spring 28
Inner off from inner groove Inner
housing side housing side
Fig. 5C
Vise
Fig. 5B
Repair P 10 / 21
4. Insert "No.1R236 Round bar for arbor" and push ring spring 28 as deep as possible to the inner housing side
by striking the round bar for arbor as illustrated in Fig. 5D.
5. Pick up ring spring 28 with plier and take off it from tool holder as illustrated in Fig. 5E.
6. Disassemble the following parts from tool holder as illustrated in Fig. 5F.
* O ring case equipped with O ring 9
* O ring 15
* Ring 9
* Impact bolt equipped with O ring 12
7. Clean the inside of tool holder completely.
Ring spring 28
Fig. 5E
Impact bolt equipped O ring case equipped
with O ring 12 Ring 9 with O ring 9
O ring 15
Fig. 5F
Fig. 5D.
< 10 > Assembling impact bolt
1. Apply grease to the O rings referring to < 1 > Lubrication at page 5
* O ring 9 for O ring case
* O ring 15
* O ring 12 for impact bolt
2. Insert impact bolt, ring 9, O ring 15 and O ring case with O ring 9 into tool holder as illustrated in Fig. 5F.
3. Assemble ring spring 28 to the inner groove of tool holder by pushing it with screwdriver. Ring spring 28 has to be
assembled as illustrated in Fig. 6.
Ring spring 28
Ring 9 O ring 15 O ring case
O ring 12 O ring 9
Impact bolt
< Note >
Do not install the used ring spring 28.
Always assemble the fresh one.
Fig. 6
Repair P 11 / 21
< 11 > Disassembling swash bearing
1. Referring to Fig. 3, 3A, 3B at page 7, disassemble the product.
And separate inner housing together with tool holder section and swash bearing section from gear housing as
illustrated in Fig. 8 and Fig. 8A. Ball baring 606ZZ can remain in gear housing in this stage. If so, refer to Fig. 8D.
2. Separate tool holder section from inner housing as illustrated in Fig. 8A.
Tool holder
section
Washer 30 Piston cylinder
Inner housing
Plastic hammer Tool holder
section Flat washer 28
Swash bearing
Swash bearing section
section
Fig. 8 Fig. 8A
3. Swash bearing section is held in inner housing with bearing retainer which is fastened with 2 pcs. of hex socket
head bolts M4x12. Take off these hex socket head bolts M4x12 for disassembling swash bearing section. See Fig. 8B.
Hex socket head bolts M4x12
Fig. 8B
4. Bring piston cylinder to the dead point. And , twist the the swash bearing section, with pulling off them
from inner housing. Then swash bearing section and change plate can be disassembled from piston cylinder.
See Fig. 8C.
Piston cylinder
Fig. 8C
5 If ball bearing 606ZZ remains in gear housing in the step of Fig. 8, reassemble swash bearing section temporarily
to gear housing, and hold gear housing as illustrated in Fig. 8D. So, swash bearing section tilts in the direction of arrow.
Keeping the illustrated position, disassemble swash bearing section by striking the edge of gear housing
with plastic hammer. So, ball bearing 606ZZ can be removed together with swash bearing section.
Ball bearing 606ZZ
Fig. 8D
Repair P 12 / 21
6. Swash bearing section can not be disassembled in one action by pressing cam shaft with arbor press, because
Take the following steps for disassembling them.
1. Disassemble ring 8 by pressing with arbor press as illustrated in Fig. 9.
2. Disassemble ball bearing 608ZZ with bearing extractor as illustrated in Fig. 9A.
3. Disassemble flat washer 8 and bearing retainer as illustrated in Fig. 9B.
4. Disassemble helical gear 26 by pressing with arbor press as illustrated in Fig. 9C.
1R236 Round bar 1R236 Round bar
for arbor Bearing retainer Flat washer 8 for arbor
Helical
1R022 Bearing Ring 8 gear 26
Ring 8 extractor plate
Ball bearing
608ZZ
1R023 Bearing Fig. 9A Fig. 9B Fig. 9C
extractor ring
Fig. 9
5. After disassembling helical gear 26, swash bearing 10, clutch cam, compression spring 12 and flat washer 12
can be separated from spur gear 10 as illustrated in Fig. 9.
6. Disassemble ball bearing 606ZZ with bearing extractor as illustrated in Fig. 9E.
Compression
Ball bearing spring 12
Clutch cam
606ZZ Ball bearing
Spur gear 10 Swash
606ZZ
bearing 10
Flat washer 12
Fig. 9D Fig. 9E
Repair P 13 / 21
<12> Assembling swash bearing section
1. Apply grease to the parts of swash bearing section referring to < 1 > Lubrication at page 5.
2. Assemble ball bearing 606ZZ by pressing spur gear 10 with arbor press as illustrated in Fig. 10.
3. Set the parts on spur gear 10 in the following order. See Fig. 10A.
1. Flat washer 12
2. Compression spring 12
3. Clutch cam Align the splines of clutch cam and swash bearing with the same of spur gear 10,
4. Swash bearing 10 when setting them to spur gear 10.
5. Helical gear 26
4. Put the above temporarily assembled swash bearing section on the bearing setting plate, and press them
with arbor press as illustrated in Fig. 10B.
5. Assemble flat washer 8 and bearing retainer. And then, assembled ball bearing 608ZZ by pressing with arbor press
as illustrated in Fig. 10C.
6. Assemble ring 8 by pressing with arbor press as illustrated in Fig. 10D.
Helical gear 26
Align the splines of clutch cam
Swash bearing 10 and swash bearing with the same
of spur gear 10.
Clutch cam
Compression
Spur gear 10 spring 12
Flat washer 12
Bearing setting pipe
Ball bearing
606ZZ
Fig. 10 Fig. 10A No. 1R034 Fig. 10B
No. 1R034 Bearing setting plate
Bearing setting plate
Ball bearing 608ZZ
Ring 8
Flat washer 8
Bearing retainer
No. 1R034
Bearing setting plate
Fig. 10C Fig. 10D
Repair P 14 / 21
<13> Assembling swash bearing section to piston cylinder
1. Apply MAKITA grease to piston cylinder and swash bearing 10 referring to <1> Lubrication at page 5.
2. Assemble 2 pcs. of flat washers 12 and piston joint to piston cylinder as illustrated in Fig. 11.
3. Insert the above piston cylinder into inner housing as illustrated in Fig. 11A.
4. Moving piston cylinder to the dead point for swash bearing 10, assemble swash bearing 10 to piston cylinder by
inserting its pole into the hole of piston joint as illustrated in Fig. 11B.
5. Fasten bearing retainer which has been assembled to swash bearing section in the step of Fig. 10C, with adhesive
hex socket head bolt M4 x 12, onto inner housing as illustrated in Fig. 11C. Fig. 11
< Note >
Do not fasten with the used hex socket head bolt M4 x 12. Always use the fresh adhesive
hex socket head bolt M4 x 12.
Piston cylinder
Flat washer 12
Piston cylinder
Piston joint
Flat washer 12
Fig. 11 Inner housing
2 pcs. of hex socket
Fig. 11A
head bolts M4 x 12
for tightening bearing
retainer
Piston cylinder
Fig. 11C
Fig. 11B
<14> Disassembling needle bearing complete
Strike the work table with gear housing. Then, needle baring complete can be disassembled from gear housing
as illustrated in fig. 12.
< Note >
Cover the work table with something soft to avoid the damage on gear housing. before disassembling.
Needle bearing
complete
Fig. 12
Repair P 15 / 21
< 15 > Assembling needle bearing complete
1. Apply MAKITA grease RA No.1 to the inside of needle baring complete.
2. Putting needle bearing complete on No.1R165 "Ring spring setting tool B" press gear housing onto the needle
bearing complete with arbor press as illustrated in Fig. 13.
< Note in assembling >
Pay attention to the assembling position of needle bearing
complete.
The fat portion of needle bearing complete has to be faced
to the belly side of gear housing.
Back side Gear housing Back side
Needle bearing
complete.
Belly side
Needle bearing
complete
No.1R165 Flat portion of
Ring spring setting tool B needle bearing complete
Belly side
Fig. 13.
< 16 > Replacing electrical parts in handle
Disassemble handle cover by unscrewing 3 pcs. of tapping screws 4x25, and disassemble strain relief
by unscrewing 2 pcs. of tapping screws 4x18 as illustrated in Fig.14.
Then, switch, noise suppressor, power supply cord, etc. can be replaced.
Brush holder
Switch
Noise suppressor
Brush holder
Handle
cover
Cord guard Tapping s
crew 4 x 25 : 3 pcs.
Power supply cord
Strain relief
Tapping screw 4x18 : 2 pcs.
Fig. 14
Circuit diagram P 16 / 21
Model HR2020 with reverse switch,
without choke coil for radio interference suppression
Brush holder Brush holder
Color index of lead wires
Black
White
Red
Blue
See-through Connected
to field ore
2 3
Switch
4 1
1 2 M1 C1 C2 M2
Noise suppressor
Power supply cord
For some countries, noise suppressor of two lead wire type is used,
or noise suppressor is not used.
Model HR2020 for 230- 240V with reverse switch
and choke coil for radio interference suppression
Color index of lead wires
Black Choke coil
White Brush holder
Red
Connected
Blue
to field ore
Orange
See-through
Brush holder
2 3
Switch
4 1
1 2 M1 C1 C2 M2
Noise
Power supply cord suppressor
For some countries, noise suppressor of two lead wire type is used,
or noise suppressor is not used.
Circuit diagram P 17 / 21
Model HR2021, HR2022 without reverse switch,
without choke coil for radio interference suppression
Brush holder Brush holder
Color index of lead wires
Black
White
Red Connected
Blue to field ore
See-through
Switch
1 2 M1 C1 C2 M2
Power supply cord
Noise suppressor
For some countries, noise suppressor of two lead wire type is used,
or noise suppressor is not used.
Model HR2021, HR2022 for 230- 240V without reverse switch,
with choke coil for radio interference suppression
Color index of lead wires
Black Choke coil
Red
Connected
Blue
Brush holder to field ore
See-through
Brush holder
Switch
1 2 M1 C1 C2 M2
Power supply cord
Noise suppressor
Wiring diagram P 18 / 21
Model HR2020 with reverse switch,
without choke coil for radio interference suppression
Fix field lead wire (black)
with lead holder as per
Fix field lead wire (black) the illustration.
with lead holder as per
the illustration.
Fix noise suppressor's
lead wire (see-through)
with lead holder
as per the illustration.
Fix brush holder's
lead wire (blue) and
field lead wire (black)
with lead holder as per
Fix brush holder's the illustration.
lead wire (red) and * Pass brush holder's lead wire (blue)
field lead wire (white) under the field lead wire (black).
with lead holder as per * Do not slack brush holder's lead
the illustration. wire (blue) between brush holder and
* Pass brush holder's lead wire (red) lead holder.
under the field lead wire (white).
* Do not slack brush holder's lead
wire (red) between brush holder and Fix the following lead wires with this
lead holder. lead holder.
* Brush holder's lead wire (red)
Fix brush holder's * 2 field's lead wires (black)
lead wire (blue) and * Noise suppressor's lead wire (see-through)
field lead wire (black)
with lead holder as per
the illustration.
Fix lead wires which are passed Pass lead wires inside of the rib.
through this area, with any of
these lead holders.
Noise suppressor
Noise suppressor is not
used in some countries
Wiring diagram P 19 / 21
Model HR2020 for 230 - 240V with reverse switch
and choke coil for radio interference suppression
Fix choke coil's lead wires Fix field lead wire (black)
(orange) with lead holder as per with lead holder as per
the illustration. the illustration.
Fix field lead wire (black) Fix noise suppressor's
with lead holder as per lead wire (see-through)
the illustration. with lead holder
as per the illustration.
Fix brush holder's
lead wire (blue) and
field lead wire (white)
with lead holder as per
Fix brush holder's the illustration.
lead wire (red) and * Pass brush holder's lead wire (blue)
field lead wire (black) under the field lead wire (white).
with lead holder as per * Do not slack brush holder's lead
the illustration. wire (blue) between brush holder and
* Pass brush holder's lead wire (red) lead holder.
under the field lead wire (black).
* Do not slack brush holder's lead
wire (red) between brush holder and Fix the following lead wires with this
lead holder. lead holder.
* Brush holder's lead wire (red)
Fix brush holder's * 2 choke coil's lead wires (orange)
lead wire (blue) and * Noise suppressor's lead wire (see-through)
field lead wire (white)
with lead holder as per
the illustration.
Fix lead wires which are passed Pass lead wires inside of the rib.
through this area, with any of
these lead holders.
Noise suppressor
Wiring diagram P 20 / 21
Model HR2021, HR2022 without reverse switch
and choke coil for radio interference suppression
Fix brush holder's wire (red)
with lead holder as per
Fix field lead wire (black) the illustration.
with lead holder as per
the illustration.
Fix noise suppressor's
lead wire (see-through)
with lead holder
as per the illustration.
Fix brush holder's
lead wire (blue) and
field lead wire (black)
with lead holder as per
the illustration.
Fix brush holder's * Pass brush holder's lead wire (blue)
lead wire (red) and (blue) under the field lead wire (black).
with lead holder as per * Do not slack brush holder's lead
the illustration. wire (blue) between brush holder and
* Pass brush holder's lead wire (red) lead holder.
under the same of (blue).
* Do not slack brush holder's lead
wire (red) between brush holder and Fix the following lead wires with this
lead holder. lead holder.
* 2 field's lead wires (black)
* Noise suppressor's lead wire (see-through)
Fix lead wires which are passed Pass lead wires inside of the rib.
through this area, with any of
these lead holders.
Noise suppressor
Noise suppressor is not
used in some countries
Wiring diagram P 21 / 21
Model HR2021, HR2022 without reverse switch,
with choke coil for radio interference suppression
Fix field lead wire (black)
Fix choke coil's lead wires (black with lead holder as per
and blue) with lead holder as per the illustration.
the illustration.
Fix noise suppressor's
lead wire (see-through)
Fix field lead wire (black) with lead holder
with lead holder as per as per the illustration.
the illustration.
Fix brush holder's
lead wire (black) and
brush holder's lead wire (red)
with lead holder as per
the illustration.
* Pass brush holder's lead wire (black)
under the brush holder lead wire (red).
Fix brush holder's * Do not slack brush holder's lead
lead wire (red) and field wire (black) between brush holder and
lead wire (black) with lead holder. lead holder.
* Pass brush holder's lead wire (red)
under the field lead wire (black).
* Do not slack brush holder's lead Fix the following lead wires with this
wire (red) between brush holder and lead holder.
lead holder. * Choke coil's lead wire (blue)
* Field's lead wire (black)
* Noise suppressor's lead wire (see-through)
Fix lead wires which are passed Pass lead wires inside of the rib.
through this area, with any of
these lead holders.
Noise suppressor