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T ECHNICAL INFORMATION New Tool
For Models HK0500 83mm(3-1/4")
Description Power Scraper
174mm(6-7/8")
CONCEPTION AND MAIN APPLICATIONS
Model HK0500 exclusively for SDS-Plus Bit , developed for fine
chipping works, such as tearing up tiles, joints, and mortar in re-
construction sites.
We have put Motor laterally and made the Barrel thickness to be 468mm(18-1/2")
suitable for gripping so that tile tearing works may be easier. In
Chuck structure, one-touch sliding system has been applied, which
you can attach only by inserting Bit and searching grooves.
Moreover, your fingers will not be exhausted in continuous operations
owing to Large switch and Large D-shape handle. At the top end, a
very effective dust-proof cap with lip has been applied.
Specifications
Continuous Rating(W)
Voltage (V) Current(A) Cycle(Hz) Input output Max. output(W)
100 5.8 50/60 550 260 500
115 5.0 50/60 550 260 500
220 2.6 50/60 550 260 500
230 2.5 50/60 550 260 500
240 2.4 50/60 550 260 500
Motor Series commutator motor ( 72 type 25 )
Blows per minute 2000~3500 bpm
Standard equipment
Scaling chisel
Optional accesories
Bull point 14-250
Cold chisel 20-250
Scaling chisel 38-200
Grease for Bit
Grease for Hammer
Shape for easy use Low Vibration Whole plastic body
The length and shape suitable for tile tearing , If Bit touches electric wires in the
putting Motor laterally. wall, electric shock is rarely conveyed
to a worker because the whole outer
surface is covered by plastic.
With dial of variable/stepless speed
You can do finer chipping works, and
operate the dial, pulling Trigger.
Barrel part easy to be gripped
Improved Dust-proof
Very comfortable to grip because of its Large L-shape handle
Owing to applying a dust-proof proper thickness and length ( 58x100mm,
cap with lip, it is prevented that Large and round Handle shape is easy
2-1/4" x 3-15/16" )
dusts enter from the top end. to grip.
Large Trigger switch
Light weight
Your fingers will not be exhausted
MAKITA #HK0500:
even after a long time operation.
3.1kgs (6.8 lbs)
One-touch sliding chuck
By only inserting Bit and searching
Thick commutator
grooves, you can install Bit.
Effective thickness of Segment in
Commutator has been made to be as
twice big
Tough body Bit can be fixed at 12 levels as that of #HK1810. Also, it is
of degreed position. protected from radiant heat and dust
The strength is enough to bear if you
use it gouging like a bar. The strength is enough to particles by
bear if you use it gouging
like a bar.
Handle cover
Repair
1. Repair of Armature
Disassembly:
1) Remove Tapping screw4x18(6 pcs) , Handle cover,
and Carbon brush. (See Fig. 1)
Tapping screw M4x18
Fig. 1
2) Remove Tapping screw5x20 (4pcs) , and separate Tapping
screw5x20
Clunk housing from Motor
housing. (See Fig.2)
Clunk
housing cover
Motor housing
Fig. 2
Countersunk
3) Remove Countersunk head screwM4x12(2pcs) and
head screw
Armature. ( See Fig.3) Armature M4x12
Fig. 3
Retaining ring
Assembly:
(axis) S-12
1) After installing Bearing retainer68 and Flat washer12,
attach Ball bearing Ball bearing 6201 DDW
6206201DDW. Then install Retaining ring (axis) S-
12. ( See Fig.4) Flat washer 12
Bearing retainer 68
Armature
Fig. 4
2. Repair of Chuck
Disassembly:
1) Lower chuck cover and remove Cap37 (See Fig.5)
Then , remove Chuck cover, Compression spring38 Chuck cover
Cap 37
and Spring guide ( See Fig.6)
2) Remove Leaf spring 26 from Chuck ring and remove Chuck cover
Compression
Pin( See Fig.7). spring 38
Remarks: You can remove Leaf spring easily by
Retaining ring plier . Spring guide
Fig. 5
Fig. 6
3) When removing Chuck ring, Steel ball7.0, Spring Leaf spring 26
guide and Compression spring38 will come off. (See
Fig.7) Chuck ring
Pin 8
Spring guide
Compression
spring 38
Steel ball 7.0
Tool holder
Fig. 7
Assembly
In attaching Pin8, you need to lower Spring guide
(See Fig. 8).
Spring guide
Pin 8
Fig. 8
3. Repair of Clunk housing
Tapping screw 4x18
Disassembly:
1) Remove Tapping screw4x18(2pcs), and pull out
Clunk housing cover. (Fig.9).
Clunk housing cover
2) Remove Tapping screw4x16(4pcs) and Clunk cap.
(Fig.10) Fig. 9
Tapping screw 4x16
Clunk cap
O Ring 53
3) Remove Retaining ring (hole) R-38 and pull out Tool
holder. (Fig.11)
Piston
Fig. 10
4) Take out Piston from Clunk housing. (Fig.10)
Retaining ring (hole) R-38
Clunk housing
Tool holder
Fig. 11
Assembly
1) After attaching Flat washer27 to Clunk housing,
install Oil seal 30. ( See Fig.12)
Flat washer 27
Oil seal 30
2) After attaching Piston to Clunk shaft, install Tool Clunk housing
holder. ( Fig.10) Fig. 12
NOTE: Check that Flat washer 27 is not inclining and
is in a position shown in
Fig. 12 .
3) Using Jig (1R 232), install Ring27, Polyurethane
washer28 and Ring27 in this
order. ( See Fig. 13)
Jig (1R232)
Ring 27
Polyurethane washer 28
Ring 27
4) Check if O Ring 53 is attached to Clunk cap or not. (
See Fig.10)
Fig. 13
4. Repair of Tool holder
Disassembly:
1) Insert SDS-plus with its end ahead , and pull out
Striker by pressing Impact bolt.
( See Fig. 14)
Tool holder Striker
Fig. 14
2) Put a thin driver into hole of Tool holder, hit it by
plastic hammer, and remove
Ring spring 21 from grooves. ( See Fig.15)
3) Inserting a thin round rod into the end and hitting it by
Plastic hammer, take the Tool holder
following items out of Tool holder;
Impact bolt, Flat washer13, O Ring 15, Fig. 15
O Ring case, Ring spring21
( See Fig. 16)
Tool holder Flat washer 13 O Ring case Ring spring 21
Impact bolt O Ring 15
Fig. 16
Assembly
1) Check that O Ring 11 is put in O Ring case.
2) After making Flat washer13, O Ring 15 and O Ring
Striker
case pass through Impact bolt, press them into Tool
holder. (See Fig.17)
At that time use Striker as a jig putting up-side-down. O Ring 11
O Ring case
O Ring 15
Flat washer 13
NOTE: Use O Ring 16 of Striker after removing. Be
careful about the order of to Bit side
Impact bolt
each part and the attaching direction of Impact bolt.
Fig. 17
3) In installation, exchange Ring spring 21 for a new
one.
Ring spring 21
4) Insert Ring spring21 in Tool holder by ? driver, etc.,
use Striker as a jig in the
same way as 2), and then place Ring spring 21 into Groves in
grooves of Tool holder. ( See Fig. 18) Tool holder
to Bit side
5) Being careful of the attaching direction of Striker,
press it into Tool holder. ( See fig.19) Fig. 18
Striker
Impact bolt
to Bit side
Fig. 19
5. Repair of Spiral gear
Disassembly
Tapping screw 4x16
1) Remove Tapping screw4x16 and Gear cover. ( See
Fig.20)
Gear cover
Jig (1R238)
Ball bearing 6200LLB
2) Use Jigs, 1R232 and 1R238, shown in Fig.20, press Clunk shaft
out Clunk shaft by Arbor press.
Spiral bevel gear 41
Clunk housing
Jig (1R232)
Fig. 20
Clunk shaft
Assembly
1) Attaching Ball bearing6002LLU to Clunk housing, Retaining
install Retainer ring(hole) R- 32. ( See Fig. 21) ring(hole) R-32
Ball bearing
6002LLU
Oil seal 15
2) Install Oil seal15 in Clunk housing using Jig 1R249.
At that time put it approx.
1mm deeper than end surface. ( See Fig.21)
1.0
Fig. 21
3) Attach Clunk shaft. Gear cover
Ball bearing 6002LLU
4) Fixing Clunk shaft steadily by Jig1R216, press in
Spiral bevel gear41
Spiral gear41 and Ball bearing6200LLB . After that,
install Gear cover. (See Fig.22)
Clunk shaft
Fig. 22 Jig(1R216)
6. Grease
[ Grease exchange]
In exchanging Carbon brush, exchange Grease also.
1) Drive the Machine for several minutes for warming.
2) Referring to the above mentioned (2) Chuck repair and (3) Clunk housing, remove Clunk cap.
3) Directing the Machine top end upward, collect Grease in Clunk room, wipe it away with a cloth, and pour in 10 cc of
MAKITA grease R No.00.
NOTE: If you put Grease more than the defined quantity, a trouble such as wrong striking may occur. So, be careful
not to pour too much.
[ Place to apply Grease ] ( :applying place)
Apply Grease to the following positions to prevent early abrasion and being burnt
down.
1) Where MAKITA Grease is to be applied
Impact bolt:
O Ring,
X Ring,
All around Impact bolt
Striker:
O Ring,
All around Striker
Piston:
O Ring,
All around Piston
Rod :
Inside of attaching hole
O Ring case:
All around both inner/outer
diameters of O Ring
Oil seal 15
Oil seal 30
Tool holder:
All around the part shown
in the illustration.
2. Where MAKITA Grease R No.1 is to be applied
Spiral bevel gear 41: Teeth surface
3. Where MAKITA Grease N No.2 is to be applied
Tool holder: Pin hole,
Steel ball hole
Wiring diagram
[ Where Insulated connector is used ]
Field
Switch
Orange
P1
3 2
Power supply cord
Noise suppressor
Black
P2
White
Insulated connector
Controller
NOTE: In some areas, Noise suppressors are not used.
[ Where Terminal black is used ]
Field
Orange
Switch
Ckoke coil
Orange
P1
3 2
Power supply cord Noise suppressor White
Purple
Clear Earth teminal
to Field steel core Ckoke coil
Clear
P2
Black
Terminal block
Purple
Insulated connector
Controller
NOTE:
*In some areas, Noise suppressors are not used or Two-foot Noise suppressors are used.
* In other areas, Choke coils are not used.
Notes in assembly
(1)Field leas wire (Black)
Handle
See to it that Field lead wire
willnot run on the diagonal line
part in the Illustration.
Do not make Lead wire
loosened here.
(2) Within Handle
Place Choke coil lead wire here ,
folded as shown in the illustration.
Be careful so that Lead
wires ( Orange and
Purple)for connecting
Brush holder may not
slacken toward the
Commutator side. Terminal block (if used)
When using Insulated
Store Field lead wire connector
(White) and Lead wire for
Earth relay ( if used) after
place it around
having attached Brush
here.
holder.
Noise suppressor (if
Do not store Varnished
used)
polyester tube (for protection
of White filed lead wire
andLead wire for earth relay,
if used ) into Lead holder.
Store Lead wire into
Lead holder. Insulated connector for
connecting Earth lead wire
( if used )