Makita HM1213C Manual

PRODUCT
P 1/ 17
TECHNICAL INFORMATION
Model No.
Description
CONCEPT AND MAIN APPLICATIONS
HM1213C, HM1203C
Demolition Hammers
Models HM1213C and HM1203C have been developed from
HM1202C series models as SDS-Max demolition hammers,
featuring high work efficiency and durability.
Listed below are specification differences between the two models.
HM1203C
Dimensions: mm (")
Width (W)
Height (H)
Length (L)
Model No. HM1203CHM1213C
576 (22-3/4)
149 (5-7/8) 128 (5)
265 (10-3/8)
HM1213C
L
H
W
Model No.
AVT (Active dynamic vibration absorber)
Vibration absorbing handle Yes No
HM1203CHM1213C
Specification
Standard equipment
Optional accessories
Note: The standard equipment for the tool shown above may vary by country.
Continuous Rating (W)
Voltage (V) Cycle (Hz) Input Output Max. Output (W)
110
120
220
230
240
15
14
7.8
7.8
7.8
50/60
50/60
50/60
50/60
50/60
1,510
---
1,510
1,510
1,510
700
700
750
750
750
1,600
1,600
1,800
1,800
1,800
Current (A)
Model No. HM1203CHM1213C
Europe, Commonwealth of Dominica, Cyprus: 4.0 (13.1)
Chile, Brazil: 2.0 (6.6)
Other countries: 5.0 (16.4)
Double insulation
Power supply cord: m (ft)
Yes
10.3 (22.7) 9.2 (20.3)
10.8 (23.6) 9.7 (21.4)
Net weight: kg (lbs)
Impacts per min: min-1=ipm
Shank diameter: mm (")
950 - 1,900
Electronic
control
Variable speed control by dial
Constant speed control
Soft start
Yes
Yes
Yes
Suppression of motor speed
during no-load Yes No
Yes No
18 (11/16)
Shank type SDS-Max
Weight according to
EPTA-Procedure 01/2003*: kg (lbs)
*includes Side handle.
Bull points
Cold chisels
Scaling chisels
Scaling chisel (for Tile)
Grooving chisel
Clay spade
Bushing tool
Rammer
Grease vessel (containing 30g hammer grease)
Plastic carrying case
Safety goggles
Hammer service kit
Side handle (D-shaped) ........... 1
Bit grease .................................. 1
Bull point .................................. 1
Plastic carrying ........................ 1
Cleaning cloth .......................... 1
Vibration
absorption
AVT (Active dynamic
vibration absorber)
Vibration absorbing handle
Yes No

P 2/ 17
Repair
CAUTION: Remove the Hammer bit from the machine for safety before repair/ maintenance
in accordance with the instruction manual!
[1] NECESSARY REPAIRING TOOLS
[2] LUBRICATIONS
Code No.
1R003 Retaining ring pliers ST-2N
1R045 Gear extractor
1R212 Tip for Retaining ring pliers
1R214 Taper sleeve
1R229 1/4” Hex shank for M5
1R231 1/4” Hex shank for M8
1R232 Pipe 32
1R258 V block
1R263 Bearing extractor
1R269 Bearing extractor
1R346 Center attachment
1R363 Ring spring removing tool
Removing / Assembling Ring spring
1R029 Bearing setting Pipe 23-15.2 Removing Crank shaft from Helical gear 57
Removing Armature from Gear housing
Attaching to 1R003 when removing / assembling Ring spring
Fitting Fluoride ring to Impact bolt
Unscrewing M5 Hex bolts and M6 H.S. Button head screw
Unscrewing M8 Hex bolts when disassembling Barrel
Assembling Helical gear 57
Accepting Helical gear 57 when removing Crank shaft
Separating Motor section from Crank housing
Removing Ball bearing 6000DDW from Commutator end of Armature
Attaching to 1R045 when removing Armature from Gear housing
Removing Ring spring 26 from Tool holder
Description Use for
Apply lubricants to the portions designated by triangles to protect parts and product from unusual abrasion.
Fig. 1
Item No.
Ring spring 26
Flat washer 30
Chuck cover
Description
Tool holder cap
Portion to lubricate for Tool holder section Amount
a little
Lubricant
Makita grease N No.2
Makita grease R No.00
1
6
6
24
23
24
Rubber ring 30
Release cover
Spring guide
Change ring
Lock ring
8
a
b
8
Chuck ring Inner wall where 8 Tool retainer contacts
O ring 35.5 Whole portion for smooth action of 24 Tool holder
in Barrel complete
Tool holder
Tool retainer Belly side where shank of Hammer bit contacts
Lip portion
8
1
23
a Portion where Rubber ring 30 contacts
b Portion where Lock ring contacts

P 3/ 17
Repair
[2] LUBRICATIONS (cont.)
Fig. 3
Fig. 2
Item No. Description Portion to lubricate for AVT mechanism (HM1213C only)
42
Spring guide
Pipe holder
Pipe 22 55
53
47
49
50
62 Crank housing
44
Compression
spring 15 Compression
spring 15
42
44
47
55 O ring 12 Whole portion
Makita grease R
No. 00
Makita grease R
No. 00
Whole portion
Whole portion
O ring 12
O ring 24
Counter weight Drum portion where Pipe 22 contacts
53
49
50
Item No. Description Portion to lubricate for Impact bolt section and Crank section Amount
36 37
38
34
62
66
77
37
36
34
38
62
66
77
Pin 12
Cylinder 40
O ring 44
O ring 31.5
Crank housing
Crank shaft
Armature
Whole portion
Space between Piston and Striker
Space between Impact bolt and Striker
Whole portion for smooth action of Striker in 36 Cylinder 40
Whole portion for smooth action of Impact bolt in 24 Tool holder
Whole portion for smooth action of Piston in 36 Cylinder 40
Space where Helical gear 57 and Crank shaft rotate
Pin portion where Connecting rod accepts
Drive end (Gear portion)
25
26 Impact bolt
Helical gear 57
Gear housing
Rubber ring 24
Ball bearing 6206LLU
Shoulder sleeve Piston
Striker
25
26
X ring 21
Fluoride ring 28
40g
10g
a little
a little
a little
AmountLubricant
a little
10g
10g
Connecting rod

Pressing down Flat washer 30 with
1R363, remove Ring spring 26
using 1R003 with 1R212.
While pressing down Spring guide,
remove two Tool retainers.
Remove Flat washer 30, Chuck cover
Rubber ring 30, Chuck ring and
Release cover.
1R363
1R003
Flat washer 30
Chuck cover
Rubber ring 30
Chuck ring
Chuck cover
Ring
spring 26
Flat washer 30
1R212
Release
cover
Fig. 5
Spring guide
Tool retainer (2pcs.)
(2) After removing ring spring 26, disassemble the components of Chuck mechanism.
Tool retainers can be removed from Tool holders as illustrated in Fig. 5.
(1) Remove Handle section as illustrated in Fig. 4.
Remove six 5x25 Tapping screws.
Disconnect Connector of Switch from Controller.
Separate Handle section (Handle base, Switch,
Power supply cord, Handle, Handle cover.)
For easy and safety disassembling, stand the machine
on Work bench as illustrated below.
And remove Tool holder cap with slotted screwdriver.
[3] ASSEMBLY/ DISASSEMBLY
[3]-1. Chuck
DISASSEMBLING
Controller
Connector
5x25 Tapping
screw (6pcs.)
Handle section
Fig. 4
Tool holder cap
Chuck cover
Change
ring cover
P 4/ 17
Repair

P 5/ 17
Repair
[3] ASSEMBLY/ DISASSEMBLY
[3]-1. Chuck (cont.)
ASSEMBLING
Take the disassembling step in reverse. Refer to Figs. 6, 5 and 3.
Note: It is difficult to set Tool holder cap in place by hand.
Put Tool holder cap on floor, and push Tool holder to Tool holder cap while making use of the machine weight.
(Fig. 7)
Fig. 7
Tool holder capTool holder
Remove Spring guide, Compression spring 35,
Change ring cover.
Chuck mechanism can be removed in this step.
Spring guide
Compression
spring 35
Change ring
cover
Fig. 6
Retaining ring
(EXT) WR-45
Change ring
Change ring
Change ring is fixed to Change ring cover with
Retaining ring (EXT) WR-45.
Remove Retaining ring with 1R003.
Change ring can be removed from Change ring cover.
Retaining ring
(EXT) WR-45
Change ring
cover
(3) The components of Chuck mechanism can be removed form Tool holder as illustrated in Fig. 6.

P 6/ 17
Repair
[3] ASSEMBLY/ DISASSEMBLY
[3]-2. Impact bolt, Cylinder, Striker
DISASSEMBLING
Remove four M8x35 Hex socket head bolts and M5x25
Hex socket head bolt.
Housing cover and Barrel section can be separated from
Crank housing without disassembling Chuck mechanism.
Barrel section
Crank housing Shoulder
sleeve
(1) Impact bolt can be disassembled as illustrated in Fig. 8.
(2) When O ring 23 (orange) shows through the worn Fluoride ring 28
as illustrated in Fig. 9, all the rings on Impact bolt have to be replaced.
Impact bolt
Rubber
ring 24
X ring 21
O ring 23
Fluoride ring 28
Impact bolt
Fig. 9
Housing cover
Insert Screwdriver through Tool holder cap and
strike Screwdriver. Impact bolt, two Shoulder
sleeves and Rubber ring 24 are removed.
Fig. 8
M8x35 Hex
socket head
bolt (4pcs.)
M5x25 Hex
socket head
bolt
Fig. 10
Strike the reverse side of Crank housing as illustrated
below.
Cylinder 40 can be removed from Crank housing.
(3) Disassemble Cylinder 40 from Crank housing, and take out Striker from Cylinder 40 as illustrated in Fig. 10.
O ring 31.5
Cylinder 40
One way
valve guide
Crank housing
Striker
Remove Striker from Cylinder 40 by
pushing out toward Impact bolt side.
O ring 35 can be removed from Striker.

P 7/ 17
Repair
[3] ASSEMBLY/ DISASSEMBLY
[3]-2. Impact bolt, Cylinder, Striker (cont.)
ASSEMBLING
Shoulder
sleeve
Shoulder
sleeve
Impact bolt
(3) Mount Shoulder sleeves and Rubber ring 24 to Impact bolt as illustrated in Fig. 13.
(4) Take the disassembling step in reverse. Refer to Figs 10 and 8.
Note: Pay attention to the directions of Shoulder sleeves.
See illustration below.
Rubber
ring 24
Fig. 13
Cylinder 40
Striker
O ring 31.5
Crank housing side Impact bolt side
(1) Insert Striker with O ring 31.5 into Cylinder 40 so that O ring 31.5 faces Crank housing side as illustrated in Fig. 11R.
(2) Assemble X ring 21, O ring 23 and Fluoride ring 28 to Impact bolt as illustrated in Fig. 12.
Note: 1) Orange color of O ring 38 shows through Fluoride ring 28 on Impact bolt as the fluoride ring 28 becomes worn.
If the above case appears, be sure to replace O ring 38, Fluoride ring 28 and X ring 21 with the new ones at the
same time.
2) Wash inside of Tool holder when dust is found out.
3) If once Fluoride ring 28 extends, it does not shrink by itself and therefore installing it to Impact bolt without
the proper step causes breakage. Use 1R214 before setting Fluoride ring 28 in place.
One way
valve guide
One way
valve guide Striker O ring 31.5Cylinder 40
Crank housing side Impact bolt side
Fig. 11R Fig. 11F
Correct Wrong
Taper sleeve
(No.1R214)
Insert Impact bolt from
the HR5001C side of
Taper Sleeve. And keep
it approx. 60 seconds
in Taper sleeve.
Impact bolt
Assemble of Rings to Impact bolt
Before Correction :
Rings' edges are protruding from
the top edge of the groove on
Impact bolt.
groove on Impact bolt
Fluoride ring 28
X ring 21 O ring 23
After Correction :
Rings' edges are positioned
under the top edge of the
groove on Impact bolt.
Corrected
Fig. 12

P 8/ 17
Repair
[3] ASSEMBLY/ DISASSEMBLY
[3]-3. Active dynamic vibration absorber (only for HM1213C)
DISASSEMBLING
ASSEMBLING
Fig. 14 Fig. 15
Fig. 16
Fig. 18
Compression
spring 15
Spring guide
Absorber holder portion of
Crank housing complete
Phillips
screwdriver
Slotted screwdriver
Pipe holder
Push Spring guide
(inner part of the
Absorber).
Absorber holder
Spring guide tilts to be hooked
inside Absorber, and the end
of Absorber is removed from
Absorber holder portion of
Crank housing complete.
Disassemble Active dynamic vibration absorber as follows.
Disassemble Active dynamic vibration absorber as illustrated in Figs. 12, 13 and 14.
Assemble Active dynamic vibration absorber as illustrated in Figs. 17 and 18.
Disassemble active dynamic
vibration absorber by levering up
with two Slotted screwdrivers.
Active dynamic
vibration absorber
Pipe holder Pipe holder
O ring 12 O ring 12 O ring 12
O ring 12O ring 24 O ring 24
Compression spring 15 Compression spring 15
Spring guide
Pipe 22
Counter weight Spring guide
Spring guide
Assemble Active dynamic vibration
absorber by pressing while maintaining
its position parallel to Crank housing.
Spring guide
Fig. 17
Spring guide Spring guide
If Spring guide is hooked
in Absorber, push Spring
guide to pop it out from
Pipe holder.
Spring guide protrudes.
Turn and push Pipe holders
as illustrated above.
Pipe holders can be separated.

P 9/ 17
Repair
[3] ASSEMBLY/ DISASSEMBLY
[3]-4. Crank section
DISASSEMBLING
(1) Remove Handle section. (Fig. 2)
(2) Remove Housing cover and Barrel section. (Fig. 8) No need to disassemble Chuck section.
(3) Remove Active dynamic vibration absorber from Crank housing exclusively for HM1213C. (Figs. 14 and 15)
(4) Remove Rear cover and disconnect Carbon brushes from the commutator of Armature as illustrated in Fig. 19.
Note: This is a necessary step to remove Armature from machine.
Carbon brush is pressed with
Spiral spring to maintain its
contact with commutator of
Armature.
Carbon brush
Spiral spring
Carbon brush
Carbon brush
Spiral spring
Armature shaft of
commutator end
Armature shaft of
commutator end
Armature shaft of
commutator end
Remove six M6x40 Hex socket button head screws.
Separate Motor housing from Crank housing by levering up Crank housing with 1R263.
Detach Spiral spring
from Carbon brush.
Disconnect from commutator
of Armature by pulling
Carbon brush,.
Disassemble Rear cover from
Motor housing as follows.
Rear cover
5x25 Tapping screw (3pcs.)
Motor housing
Fig. 19
Fig. 20
1R263
Motor housing
Note: Flat washer 15 may come out with Armature at this time.
Pay attention not to lose it.
(5) Separate Motor housing from Crank section as illustrated in Fig. 20.
Flat
washer 15

Repair
[3] ASSEMBLY/ DISASSEMBLY
[3]-4. Crank section
DISASSEMBLING
Gear housing
complete
Armature
Set Crank pin at dead point on Handle
assembling side as illustrated bellow.
1 Strike Crank housing as illustrated below. Crank shaft is
removed together with Helical gear 57 and Ball bearing 6206LLU.
2 Piston can be removed together with Connecting rod.
Crank cap cover
Crank cap
Seal ring
M4x18 Pan head screw (4pcs.)
Disassemble Gear housing complete
with Armature from Crank housing.
Disassemble Crank cap cover, Crank
cap, Seal ring by unscrewing four
M4x18 Pan head screws.
Fig. 21
Fig. 22
Air pipe
Remove Air pipe
(only for HM1213C).
Filter can be removed
from Crank cap.
Crank cap
Filter
Fig. 23
Connecting rod
Crank pin at dead center point
of Connecting rod
1
2
Crank shaft
Ball bearing 6206LLU
Helical gear 57
Connecting rod
Piston
Flat washer 12
O ring 31.5O ring 35
Replace O ring 35 and O ring 31.5 with the new ones in the following cases.
* When damage or wear is recognized.
* When carbon brush is replaced.
Piston
(6) Disassemble Crank section as illustrated in Figs. 21, 22 and 23.
P 10/ 17