Makita HK0500 Manual

TECHNICAL INFORMATION
For Models
HK0500
Standard equipment
Optional accesories
Scaling chisel
Bull point 14-250
Cold chisel 20-250
Scaling chisel 38-200
Grease for Bit
Grease for Hammer
New Tool
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
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.
Motor Series commutator motor ( 72 type 25 )
2000~3500 bpmBlows per minute
Specifications
Voltage (V) Current(A) Cycle(Hz) Input Max. output(W)
output
100 5.8
5.0
2.6
2.5
2.4
50/60 550
550
550
550
550
260
260
260
260
260
500
500
500
500
500
115 50/60
220 50/60
230 50/60
240 50/60
Description
Power Scraper
Continuous Rating(W)
468mm(18-1/2")
174mm(6-7/8")
83mm(3-1/4")

Shape for easy use
The length and shape suitable for tile tearing ,
putting Motor laterally.
Improved Dust-proof
Owing to applying a dust-proof
cap with lip, it is prevented that
dusts enter fromthe top end.
Light weight
MAKITA #HK0500:
3.1kgs (6.8 lbs)
Tough body
The strength is enough to bear if you
use it gouging like a bar.
Large Trigger switch
Your fingers will not be exhausted
even after a long time operation.
Large L-shape handle
Large and round Handle shape is easy
to grip.
With dial of variable/stepless speed
You can do finer chipping works, and
operate the dial, pulling Trigger.
Low Vibration Whole plastic body
If Bit touches electric wires in the
wall, electric shock is rarely conveyed
to a worker because the whole outer
surface is covered by plastic.
Bit can be fixed at 12 levels
of degreed position.
The strength is enough to
bear if you use it gouging
like a bar.
One-touch sliding chuck
By only inserting Bit and searching
grooves, you can install Bit. Thick commutator
Effective thickness of Segment in
Commutator has been made to be as
twice big
as that of #HK1810. Also, it is
protected from radiant heat and dust
particles by
Barrel part easy to be gripped
Very comfortable to grip because of its
proper thickness and length ( 58x100mm,
2-1/4" x 3-15/16" )

Repair
1. Repair of Armature
 Disassembly:
 1) Remove Tapping screw4x18(6 pcs) , Handle cover,
and Carbon brush. (See Fig. 1)
 2) Remove Tapping screw5x20 (4pcs) , and separate
Clunk housing from Motor
 housing. (See Fig.2)
 3) Remove Countersunk head screwM4x12(2pcs) and
Armature. ( See Fig.3)
Assembly:
1) After installing Bearing retainer68 and Flat washer12,
attach Ball bearing
 6206201DDW. Then install Retaining ring (axis) S-
12. ( See Fig.4)
Handle cover
Fig. 1
Tapping screw M4x18
Tapping
screw5x20
Clunk
housing cover
Motor housing
Armature
Retaining ring
(axis) S-12
Ball bearing 6201 DDW
Flat washer 12
Bearing retainer 68
Armature
Countersunk
head screw
M4x12
Fig. 2
Fig. 3
Fig. 4

2. Repair of Chuck
 Disassembly:
 1) Lower chuck cover and remove Cap37 (See Fig.5)
 Then , remove Chuck cover, Compression spring38
and Spring guide ( SeeFig.6)
 2) Remove Leaf spring 26 from Chuck ring and remove
Pin( See Fig.7).
 Remarks: You can remove Leaf spring easily by
Retaining ring plier .

3) When removing Chuck ring, Steel ball7.0, Spring
guide and Compressionspring38 will come off. (See
Fig.7)
Assembly
In attaching Pin8, you need to lower Spring guide
(See Fig. 8).
Cap 37
Chuck cover
Chuck cover
Spring guide
Compression
spring 38
Fig. 5
Fig. 6
Leaf spring 26
Chuck ring
Pin 8
Spring guide
Compression
spring 38
Tool holder
Steel ball 7.0
Fig. 7
Fig. 8
Spring guide
Pin 8

3. Repair of Clunk housing
 Disassembly:
 1) Remove Tapping screw4x18(2pcs), and pull out
Clunk housing cover. (Fig.9).
 2) Remove Tapping screw4x16(4pcs) and Clunk cap.
(Fig.10)
 3) Remove Retaining ring (hole) R-38 and pull out Tool
holder. (Fig.11)
 4) Take out Piston from Clunk housing. (Fig.10)
Fig. 9
Fig. 10
Fig. 11
Clunk housing cover
Tapping screw 4x16
Clunk cap
O Ring 53
Piston
Retaining ring (hole) R-38
Clunk housing
Tool holder
Tapping screw 4x18

Assembly
 1) After attaching Flat washer27 to Clunk housing,
install Oil seal 30. ( See Fig.12)
 2) After attaching Piston to Clunk shaft, install Tool
holder. ( Fig.10)
 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)
 4) Check if O Ring 53 is attached to Clunk cap or not. (
See Fig.10)
Fig. 12
Jig (1R232)
Ring 27
Polyurethane washer 28
Ring 27
Clunk housing
Oil seal 30 Flat washer 27
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)
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
 following items out of Tool holder;
 Impact bolt, Flat washer13, O Ring 15,
 O Ring case, Ring spring21
 ( See Fig. 16)
Fig. 14
Striker
Tool holder
Fig. 15
Tool holder
Fig. 16
Tool holder Flat washer 13
Impact bolt O Ring 15
O Ring case Ring spring 21

Assembly
 1) Check that O Ring 11 is put in O Ring case.
2) After making Flat washer13, O Ring 15 and O Ring
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.

NOTE: Use O Ring 16 of Striker after removing. Be
careful about the order of
each part and the attaching direction of Impact bolt.

 3) In installation, exchange Ring spring 21 for a new
one.
 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
grooves of Tool holder. ( SeeFig. 18)
 5) Being careful of the attaching direction of Striker,
press it into Tool holder. ( See fig.19)
Fig. 17
Fig. 18
to Bit side
to Bit side
Impact bolt
Striker
Ring spring 21
Groves in
Tool holder
O Ring 11
to Bit side
Striker
O Ring case
O Ring 15
Flat washer 13
Impact bolt
Fig. 19

5. Repair of Spiral gear
 Disassembly
 1) Remove Tapping screw4x16 and Gear cover. ( See
Fig.20)
 2) Use Jigs, 1R232 and 1R238, shown in Fig.20, press
out Clunk shaft by Arbor press.

Assembly
1) Attaching Ball bearing6002LLU to Clunk housing,
install Retainer ring(hole) R-32. ( See Fig. 21)
 2) Install Oil seal15 in Clunk housing using Jig 1R249.
At that time put it approx.
 1mm deeper than end surface. ( See Fig.21)
 3) Attach Clunk shaft.
4) Fixing Clunk shaft steadily by Jig1R216, press in
Spiral gear41 and Ballbearing6200LLB . After that,
install Gear cover. (See Fig.22)
Fig. 20
Tapping screw 4x16
Gear cover
Jig (1R238)
Ball bearing 6200LLB
Spiral bevel gear 41
Clunk housing
Clunk shaft
Jig (1R232)
1.0
Fig. 21
Clunk shaft
Retaining
ring(hole) R-32
Ball bearing
6002LLU
Oil seal 15
Fig. 22 Jig(1R216)
Clunk shaft
Spiral bevel gear41
Ball bearing 6002LLU
Gear cover

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
