Makita HM1810 User manual

Continuous Rating (W)
Voltage (V) Cycle (Hz) Input Output Max. Output(W)
110
120
220
230
240
16.0
15.0
9.6
9.2
8.8
50/60
AC/DC
50/60
50/60
50/60
1,700
1,700*1
2,000
2,000
2,000
950
950
1,240
1,240
1,240
2,300
2,300
2,500
2,500
2,500
Models No.
Description
PRODUCT
Current (A)
TECHNICAL INFORMATION
CONCEPT AND MAIN APPLICATIONS
Specification
Standard equipment
Optional accessories
Note: The standard equipment for the tool shown above may differ by country.
P 1 / 20
HM1810
Electric Breaker
Dimensions: mm (")
Width (W)
Height (H)
Length (L) 824 (32-1/2)
146 (5-3/4)
633 (25)
L
W
Model HM1810 has been developed as 28.6mm hex shank electric breaker
conforming to the permissible noise level limit of 2006 stage of European
Noise Directive for Outdoor Equipment.
Despite such low noise level, features highest-in-class chipping efficiency.
Also features unique Makita AVT (Anti-Vibration Technology), ensuring
incredibly low vibration.
H
Hex wrench 5 ................ 1 pc
Bull point
Cold chisel
Scaling chisel
Clay spade
Rammer
Blows per min.: bpm=min-1
Model HM1810
Protection from electric shock
Net weight: Kg (lbs)
Power supply cord: m (ft)
Noise*2:
dB(A)
*2: Noise indicates sound power level.
*3: This is the permissible noise level limit of 2006 stage of the "European Noise Directive for Outdoor
Equipment" (2000/14/EC). And in and after 2006, it will be prohibited in Europe to sell the products
with the sound power level exceeding this noise level limit.
The values of the permissible noise level limit listed above are calculated by us in accordance with the
directive. (The calculation is based on the weight of product.)
*4: Vibration level on the catalog for European countries
*1: Continuous Rating Input: Taiwan=1,570W, UK (low voltage)=1,700W, Saudi Arabia (low voltage)=1,650W
Specification
Shank: mm (")
Anti-vibration
technology
Vibration*4: m/s2
1,100
5.0 (16.4) [brazil only: 2.0m (6.6ft)]
Hex 28.6 (1-1/8)
Double insulation
Permissible noise level limit*3
Guaranteed noise level on the
catalog for European countries
Impact energy: J (catalog value) 63
Vibration absorbing handle No
Counterweight mechanism
32 (70.6)
111
No
107
8

P 2 / 20
Repair
[1] NECESSARY REPAIRING TOOLS
CAUTION: Disconnect the machine from the power source for safety before repair/maintenance!
1R005 Retaining Ring R Pliers RT-2N
1R023 Pipe Ring (for arbor press)
Removing Retaining ring R-80 from Crank box
Removing Helical gear 47
1R045 Gear extractor, large
1R346 Center Attachment for 1R045 Disassembling Tool retainer section
1R347 Jig for Tool Retainer Disassembling
1R231 1/4" Hex Shank Bit for M8
1R263 Bearing Extractor
Loosening/ tightening Hex socket head bolt M8x75
1R348 Spring Pin Extractor Removing Spring pin 8-40 from Tool retainer shaft
Removing Ball bearings
1R269 Bearing Extractor
1R291 Retaining Ring S and R Pliers Removing Retaining ring S-20 from Crank shaft
784408-3 Socket Bit 13-55 Loosening/ tightening Hex nut M8 that secures Fan 100
Code No. Description Use for
[2] ADHESIVE APPLICATION AND LUBRICATION
[2] -1. Adhesive Application
Apply an appropriate amount of adhesive to the following parts in order to lock them against vibration loosening or
leakage. Be sure to wipe off grease or oil from the parts before adhesive application.
Tool holder
10 Brush holder cap (2pcs) Threaded portion
12 Hex socket head bolt M6x22 (4pcs)
22 Gear housing complete
Threaded portion
16 Hex bolt M5x85 (2pcs) Threaded portion
Figure 8 inlaid portion that contacts Gear housing cover
83 Hex socket head bolt M12x55 (4pcs) Threaded portion
Item No. Description Portion to apply adhesive
76 Hex socket head bolt M5x16 (2pcs) Threaded portion
Threaded portion
94 Hex socket head bolt M12x45 (4pcs)
Fig. 1
22
: ThreeBond 1215
: ThreeBond 1321B or 1324,
or Loctite 242
Barrel
83
94
Gear housing cover
12
16
10
Bearing box
Motor housing B
Field
Motor housing A
Crank housing 76
Plate

P 3 / 20
Repair
[2] LUBRICATION
Apply Makita grease to the following portions designated with the black triangle and gray triangle to protect
parts and product from unusual abrasion.
Tool holder
Impact bolt
Striker
Impact bolt holder
61
Crank complete
Pin 15
22 Gear housing complete approx. 80g of Makita grease N No.1 in the gear chambers
24 Spur gear 22
35 Helical gear 50
appropriate amount of Makita grease N No.1 to the teeth portion
31 Crank housing approx. 110g of Makita grease R No.00 in the crank room
appropriate amount of Makita grease N No.1 to the teeth portion
43 Spur gear 47 appropriate amount of Makita grease N No.1 to the teeth portion
appropriate amount of Makita grease R No.00 to the whole portion
Piston
53 O ring 55
appropriate amount of Makita grease R No.00 to the whole portion
56, 58 O ring 52
approx. 20g of Makita grease R No.00 to the rollers of Needle bearing
66 Crank box
approx. 10g of Makita grease R No.00 to the inside
57 Cylinder liner 62
appropriate amount of Makita grease R No.00 to the inside surface of the two holes
52 Connecting rod
Balancer complete appropriate amount of Makita grease R No.00 to the inside surface
64 Connecting rod appropriate amount of Makita grease R No.00 to the inside surface of the two holes
85
appropriate amount of Makita grease R No.00 to the whole portion
100 O ring 60
Cylinder B appropriate amount of Makita grease R No.00 to the inside surface
98 X ring 40 appropriate amount of Makita grease R No.00 to the whole portion
Fig. 2
Item No. Description Portion to lubricate
22
: Makita grease N No.1
: Makita grease R No.00 31
24
35 43
56
53
57
58
98
85
100
52
Crank complete 66
61
64

P 4 / 20
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Disassembling/Assembling Motor Section
Fig. 3 Fig. 4
1) Remove Motor housing cover set. Fan 100 secured with Hex nut M8 will be now visible.
2) Remove the assembly of Rear cover and Handle (switch side), then Brush holder caps and Carbon brushes.
3) Remove hex nut M8 by turning counterclockwise with Socket bit 13-55 (No.784408-3) and Impact driver.
Now Fan 100 can be separated from Armature shaft. (Fig. 3)
4) After unscrewing four M6x22 Hex socket had bolts, remove Bearing box from Crank housing using
Gear extractor, large (No.1R045). (Fig. 4)
Important:
When unscrewing Brush holder caps, be careful not to break the screwdriver insertion slot because the adhesive-applied
Brush holder caps are secured tight.
Socket Bit 13-55
(No.784408-3)
Fan 100
Bearing box
Bearing box
Hex socket head bolt
M6x22 (4pcs)
Gear extractor, large
(No.1R045)
Crank housing
Fig. 5
5) Pull off Motor housing B from Crank housing. Then remove Motor housing A from Crank housing by tapping the
edge of Crank housing with plastic hammer. (Fig. 5) Sometimes, when tapping Crank housing, Armature may be
removed from Crank housing before Motor housing A.
6) After unscrewing two M5x85 Hex bolts, remove Field by tapping the edge of Motor housing A with plastic hammer.
(Fig. 6)
Crank housing
Motor housing A
Motor housing B
Hex bolt M5x85Field
Motor housing A
Fig. 6
Armature
REMOVING FIELD

P 5 / 20
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Disassembling/Assembling Motor Section (cont.)
INSTALLING FIELD
Fig. 7
Motor housing A
Field
Motor housing B side
Field lead wires
Field lead wires
Fig. 9
[Correct] [Wrong]
Motor housing B side
Lead wire side
Lead wire side
Do the reverse of the disassembling steps.
Important:
Field is not reversible when assembled into Motor housing A. Be sure to assemble so that the Lead wire side of the Field
is placed on the Motor housing B side as illustrated to left in Fig. 7.
It will be impossible to route the lead wires to Motor housing B if assembled as illustrated to right in Fig. 7.
REMOVING ARMATURE
If Armature is not removed in removal of Field as described in 5)
of "Removing Field", remove by following the steps described below:
1) Remove the parts of Fan 100 side (Fan 100, Bearing box and
Motor housing B). (See Figs. 3, 4, 5)
Note: It is not necessary to remove Motor housing A and Field.
Remove four M8x75 Hex socket head bolts with 1R231.
2) Remove Gear housing cover by raising with Slotted screwdriver and
Bearing extractor (No.1R263) as in Fig. 8.
Note: The two tools are necessary because Gear housing cover is
securely fastened to Gear housing using adhesive.
3) After removing the assembly of Helical gear 50 and Spur gear 22,
insert the arms of 1R045 through the opening of Gear housing.
Then grip the bearing chamber of Gear housing with the jaws of 1R045.
Now, by turning the handle of 1R045 clockwise, Armature can be
removed form Gear housing. (Fig. 9)
Assembly of
Helical gear 50
and Spur gear 22
Fig. 8
Gear housing cover
Gear housing
Armature shaft
Bearing chamber
of Gear housing
No.1R045
Armature

P 6 / 20
Repair
[3] DISASSEMBLY/ASSEMBLY
Fig. 10
1) After separating Gear housing from Crank housing, remove Ball bearing 6302LLB with Gear extractor, large
(No.1R045). At this time, be careful not to lose Pin 5. Then using Retaining ring S and R pliers (No.1R291)
remove Retaining ring S-20. (Fig. 10)
2) Put Gear housing on Pipe Ring (No.1R023), and press down Crank shaft using arbor press. (Fig. 11)
3) Now Crank shaft complete, Spur gear 47 and Sleeve 25 can be removed from Gear housing. (Fig. 12)
Note: Be careful not to lose two woodruff keys.
4) Two 6202 Ball bearings can be removed from the assembly
of Helical gear 50 and Spur gear 22 using Bearing extractors
(No.1R263) as illustrated in Fig. 13.
5) As illustrated in Fig. 15, the assembly of Helical gear 50 and
Spur gear 22 can be disassembled using Pipe ring (No.1R023),
Round Bar for Arbor 14-100 (No.1R243), arbor press and
two appropriate steel plates.
Note: Be careful not to lose two Woodruff keys.
[3] -2. Disassembling/Assembling Gear Section
Ball bearing
6302LLB
Retaining
ring S-20
Gear housing
Fig. 11 Fig. 12
Crank shaft
complete
Crank shaft complete
Arbor press
Pipe Ring
(No.1R023)
Spur gear 47
Sleeve 25
Woodruff key 4
Fig. 13
Helical gear 50 Spur gear 22
Bearing Extractor
(No.1R263)
Ball bearing 6202
(on Helical gear 50 side)
Ball bearing 6202
(on Spur gear 22 side)
Fig. 14
Pipe Ring (No.1R023)
Round bar
for arbor 14-100
(No.1R243 )
Arbor press
Woodruff key 4
Spur gear 22
Metal plates
for supporting Gear
Helical gear 50
DISASSEMBLING

P 7 / 20
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Disassembling/Assembling Gear Section (cont.)
ASSEMBLING
1) After setting O ring 40, O ring 90 and Pin 4 in place on Gear housing complete, press-fit Crank shaft complete and
Armature onto Gear housing using arbor press as illustrated in Fig. 15.
2) Put Sleeve 25 through Crank shaft complete. Set woodruff keys onto the concaves of Crank shaft complete.
Mount Spur gear 47 to Crank shaft complete. After fixing Spur gear 47 with Retaining ring S-20, assemble Ball
bearing 6302LLB to Crank shaft complete. (Fig. 16)
3) Assemble Helical gear 50 to Spur gear 22. Mount the assembly to Gear housing complete.
4) Put Gear housing complete onto Crank housing complete as illustrated in Fig. 18.
5) Apply an appropriate amount of ThreeBond 1215 to the figure 8 inlaid portion that contacts Gear housing cover.
Then secure Gear housing cover to Gear housing complete with four M8x75 Hex socket head bolts. (Fig. 19)
Hex socket head bolt M8x75
Gear housing cover
Fig. 18Fig. 17
Assembly of Helical gear 50
and Spur gear 22
Crank housing comp.
O ring 40
Clean this bearing chamber
of Gear housing complete
before mounting O ring 40
and Armature to protect
O ring 40.
Apply Makita grease N No.1 to the gear portion
of Armature before press-fitting Armature onto
Gear housing.
Fig. 15
O ring 90
Crank shaft complete
Fig. 16
Crank shaft complete
Spur gear 47
Sleeve 25
Gear housing complete
Woodruff key 4
(2 pcs)
Ball bearing 6302LLB
Retaining ring S-20
Pin 5
Pin 4
Fit Pin 4 on Gear housing
complete in the hole of
Crank housing complete.
Before putting Gear housing
cover, apply ThreeBond 1215
to the figure 8 inlaid portion
designated with white arrow.

P 8 / 20
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -3. Disassembling/Assembling Crank Section of AVT
DISASSEMBLING
Fig. 19
Fig. 22
StopperCrank box Balancer complete
Connecting rodCrank complete
Crank box
Fig. 23
Crank housing
Connecting rod
(for Piston reciprocating)
Fig. 20 Fig. 21
Hex wrench
Barrel
steel pipe
Retaining ring R-80
Flat washer 65
Crank box
1) Stopper and Crank box will be visible by removing Motor housing cover set and the assembly of Rear cover and
Handle (switch side).
2) Grasp the projection of Stopper with pliers. While turning Stopper, pull off from Crank box. (Fig. 19)
3) Unscrew four M12x55 hex socket head bolts with hex wrench. (Fig. 20)
Note: Use an appropriate steel pipe to extend the grip of hex wrench for easy removal of the bolts securely fastened
with adhesive.
4) Move Barrel till the connection portion of Balancer comp. and Connecting rod (for balancer reciprocating) is visible.
Now Connecting rod can be removed from Balancer complete and Crank complete as illustrated in Fig. 21.
5) Remove Crank box from Crank housing by unscrewing four M6x20 Hex socket head bolts. (Fig. 22)
6. Remove Retaining ring R-80 and Flat washer 65 from Crank box. (Fig. 23)
Note: Remove Retaining R-80
using Retaining Ring R Pliers
(No.R005).
7) Remove Crank by pressing with arbor press.( Fig. 24)
The other Flat washer 65 and Needle bearing 7025 still remain in Crank box in this step.
8) Needle bearing 7025 and the other Flat washer 65 can be removed from Crank box by putting the Crank complete
removed in the previous step on Flat washer 65, then pressing it with arbor press. (Fig. 25)
Flat washer 65
Needle bearing
7025
Crank complete
Flat washer 65
(the other one)
Needle bearing
7025
Crank box
Fig. 24 Fig. 25
Put the removed Crank complete
on Flat washer 65.
Crank box
Hex socket head bolt M6x20 (4pcs)

P 9 / 20
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -3. Disassembling/Assembling Crank Section of AVT (cont.)
ASSEMBLING
Fig. 26 Fig. 27
1) Put Flat washer 65 into Crank box.
2) Then, as illustrated in Fig. 26, press-fit Needle bearing 7025 into Crank box using Crank complete and the other
Flat washer 65 as jigs,
Important:
Needle bearing 7025 is not reversible when assembled into Crank box. Be sure to assemble as illustrated in Fig. 26.
3) Put Ring 10 through the crank pin on Crank complete. Then apply Makita grease R.No.00 to the roller portion of
Needle bearing 7025, then assemble Crank complete into the Needle baring. (Fig. 27)
4) Put the other Flat washer 65 into Crank box. With retaining ring R-80, fix the parts assembled into Crank box.
Then make sure that Crank complete rotates easily by finger.
5) Move Crank shaft to the rear dead point (or to the front dead point). Then, aligning the elliptic hole of Crank complete
with the crank pin on Crank shaft, fit Crank box to Crank housing. (Fig. 28)
If the crank pin is not completely inserted into the elliptic hole or positioned on the wrong hole, a gap of approx. 5mm
will occur between the brim of Crank box and Crank housing. In this case, turn Crank shaft slowly until the crank pin
is completely inserted in the elliptic hole to eliminate the gap.
6) Secure Crank box to Crank housing with four M6x20 hex socket head bolts. (Fig. 29)
7) Do the reverse of the disassembling steps from 1) to 4).
Fig. 28 Fig. 29
Crank shaft
at the rear dead point
elliptic hole
Connecting rod
Crank complete Crank box
Crank housing
Crank box
Hex socket
head bolt M6x20
Crank complete
Flat washer 65
(another one)
Flat washer 65
(mounted in the previous step)
Needle bearing
7025
Crank box
Ring 10 crank pin
Apply Makita grease R.No.00
to the roller portion.
arbor press
Assemble Needle bearing 7025
so that the brim of the needle baring
is placed on the arbor press side.
crank pin
on Crank shaft

P 10/ 20
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -4. Disassembling/Assembling Barrel Section
DISASSEMBLING
ASSEMBLING
1) Remove Stopper, Connecting rod (for balancer reciprocating) and Crank box. (See 1) to 5) of [3] -3.)
2) From Crank housing, separate Barrel then the assembly of Cylinder liner 62 and Balancer complete. (Fig. 30A)
Note: When replacing Barrel with new one, replace Plate (the guide for Balancer complete) at the same time.
When reusing two M5x16 Hex socket bolts, apply appropriate amount of adhesive to them. (Fig. 30B)
3) Take out Striker from Cylinder liner 62, then remove O ring 52 from Striker. (Fig. 30C)
4) Take out Piston and Connecting rod (for Piston reciprocating) from Crank housing complete, and remove O ring 52
and O ring 55 from the removed Piston. (Fig. 30D)
Do the reverse of the disassembling steps.
Note:
Striker and Spacer are not reversible when assembled to Cylinder liner 62. Be sure to install as illustrated in Fig. 31.
Fig. 30A Fig. 30B
Fig. 30C Fig. 30D
Fig. 31
Piston
Barrel Flat washer 63 Crank housing comp.
Piston and Connecting Rod
O ring 52 O ring 55
Striker O ring 52
[Tool retainer side]
[Crank housing side]
Cylinder liner 62
Spacer
Striker
Pin 5
Crank housing completeGasketBarrel
Fig. 32
CORRECT
WRONG
[Cross section]
Do not forget to put Flat washer 63 between Cylinder
liner 62 and Crank housing complete.
When assembling Barrel to Crank housing complete,
first fit Pin 5 in the hole on Barrel, and put the pin
through the hole of Gasket.
Then fit Barrel to Crank housing complete so that
Pin 5 is inserted into the hole on Crank housing
complete. (Fig. 32)
Hex socket head
bolt M5x16
Plate
SpacerCylinder liner 62
Balancer complete Barrel