Makita HM1317C Manual

HM1317C series models are 15kg-class Hex shank demolition hammers
with the following main features:
Same high maneuverability as the current models HM1304/ HM1304B
High durability obtained by strengthening barrel, gears, etc
AVT*for reduced vibration during chipping
Suppression of motor speed during no-load for reduced vibration
when idling
Described in the table below are the specification differences
between the four models in the subject.
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
8.0
8.0
8.0
50/60
50/60
50/60
50/60
50/60
1,510
---
1,510
1,510
1,510
700
700
800
800
800
1,600
1,600
1,800
1,800
1,800
Current (A)
Europe, South Africa, Kuwait, Hong Kong, Cyprus: 4.0 (13.1)
Brazil: 2.0 (6.6)
Other countries: 5.0 (16.4)
Double insulation
Power supply cord: m (ft)
Yes
17.0/ 15.3
(37.5/ 33.8)
19.0/ 17.3
(41.9/ 38.2)
Net weight*: kg (lbs)
Impacts per min: min-1=ipm
Shank diameter: mm (")
730 - 1,450
Electronic
control
Variable speed control by dial
Constant speed control
Soft start
Yes
Yes
Yes
Suppression of motor speed
during no-load Yes/ NoYes/ No
No
28.6 (1-1/8)30 (1-3/16)
Shank type Hex
* Weight according to EPTA-Procedure 01/2003
Bull points, Cold chisels, Scaling chisels, Clay spade, Rammer, Grease vessel (containing 30g hammer grease),
Safety goggles, Hammer service kit
Side handle ................... 1 Bull point ...................... 1 Plastic carrying ............. 1
Vibration
absorption
AVT (Anti-Vibration Technology using
Active dynamic vibration absorber)
Vibration absorbing handle
Yes/ NoYes/ No
129 (5-1/8)
715 (28-1/8) 824 (32-1/2)
Dimensions: mm (")
Width (W)
Height (H)
Length (L)
266 (10-1/2)
HM1317C
HM1307C
HM1317CB
HM1307CB
[The image above is HM1317C.]
Specifications Model HM1317C/ HM1307C HM1317CB/ HM1307CB
30mm Hex
28.6mm Hex
Shank type
Yes
No
No
Yes
Yes
No
No
Yes
No Yes
AVT*
HM1317CB
HM1307CB
HM1307C
HM1317C
motor speed
Suppression of
during no-load
Vibration
absorbing
handle
speed
control
Constant
*HM1307C and HM1307CB do not have
"AVT" logotype.
Models No.
Description
PRODUCT
TECHNICAL INFORMATION
CONCEPT AND MAIN APPLICATIONS
P 1/ 19
HM1317C/ HM1307C
HM1317CB/ HM1307CB
Electric Breaker
*Anti-Vibration Technology using Active dynamic vibration absorber

P 2/ 19
Repair
CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.
[1] NECESSARY REPAIRING TOOLS
[2] LUBRICATIONS
Fig. 1
HM1307CB. HM1317CB
Code No. Description Use for
1R003 Retaining ring S pliers ST-2N Removing Ring spring 55 from Cylinder
1R023 Pipe ring (for Arbor press) Supporter when removing Cylinder section with 1R263
1R022/ 356 Bearing plate (for Arbor press) Pressing down Sleeve when removing Ring spring 55 from Cylinder
1R031 Bearing setting pipe 28-20.2 Assembling Helical gear 47 to Crank shaft
1R045 Gear extractor (large) Removing Counter shaft
1R258 V block Assembling Helical gear 47 to Crank shaft
1R212 Tip for Retaining ring pliers Attachment for 1R003
1R217 Ring 22 Supporting Crank housing
1R228 1/4” Hex shank bit for M4 Unscrewing / Screwing M4 Hex socket head bolts
1R230 1/4” Hex shank bit for M6 Unscrewing / Screwing M6 Hex socket head bolts
1R231 1/4” Hex shank bit for M8 Unscrewing / Screwing M8 Hex socket head bolts
1R246 Round bar for arbor 18-100 Removing Crank shaft from Helical gear 47
1R252 Round Bar for arbor 30-100 Supporting Crank shaft when assembling Helical gear 47
1R263 Bearing extractor Removing Cylinder section
1R269 Bearing extractor Removing Ball bearing of Commutator side
1R348 Spring pin 8 remover Removing Spring pin 8-40 from Tool retainer for HM1307CB, HM1317CB
1R239/ 284 Round bar for arbor 10-100 / 50 Removing Tool retainer from Tool holder for HM1307C, HM1317C
1R291 Retaining ring S and R pliers Removing / Mounting Retaining ring S-8 from / to Counter shaft
1R306 Ring spring removing jig Disassembling AVT mechanism
1R346 Center attachment for 1R045 Using with 1R045 to remove Counter shaft
1R347 Tool retainer pole removing tool Removing Tool retainer pole from Tool retainer
Item No.
Apply lubricants to the portions designated with triangles to protect parts and product from unusual abrasion.
(Figs. 1 and 2.)
Description
Sleeve 43
Tool retainer for
HM1307C and HM1317C
X ring 36
O ring 36
Inner wall for smooth action of Impact bolt
Drum portion for smooth turning in Bit change
Whole portion for smooth action of Impact bolt
Whole portion for smooth action of Sleeve
Portion to lubricate Lubricant Amount
a little
20
20
22
23
Tool holder
O ring 45
21
21
21
20
Whole portion for smooth action of Impact bolt
Tool holder
Impact bolt
Tool retainer
Retainer sleeve
Compression spring 17
Shank type: 28.6mm Hex
HM1307C. HM1317C
Shank type: 30mm Hex
22 23
Impact bolt
22
23
20
12
12
Tool holder section
Makita grease R
No.00

P 3/ 19
Repair
[2] LUBRICATIONS (cont.)
Fig. 2
Item No. Description Portion to lubricate
32
30
Striker
Piston
Crank shaft
Needle cage 1412
Needle cage 1412
Nylon ring 14
Flat washer 14
Flat washer 14
47
Shoulder ring 32
Rubber ring 36
Washer 30
45
32b
32a
63
32 Cylinder 52
O-ring 42 Whole portion for action of Striker
32b Inside between Striker and Piston
32a Inside between Striker and Shoulder ring 32
48 Connecting rod Holes for Pin 12 and Crank shaft
30
Gear cover
63a
63b
63c
Gear complete 31- 43
63
Crank
housing
complete
63a Gear room for Gear complete 31-43 and Helical gear 47
around Gear cover
63c Crank room
63b Shaft for two Needle cages 1412 and Gear complete 31-43, etc.
Makita grease
R No.00
Makita grease
R No.00
Makita
grease R
No.00
AmountLubricant
Lubricant Amount
60g
10g
10g
a little
a little
47 O ring 45 Whole portion for action of Piston
47 O-ring 42
a little
Makita grease
N.No.1
70g
AVT mechanism for HM1317C and HM1317CB
Crank section
Item No. Description Portion to lubricate
49
37
Pin 6 Whole portion
Whole portion
Shoulder washer 8
Needle bearing 1813
Hole portion (Plane bearing 34) for smooth rotating of Counter shaft
O ring 87 Whole portion
Whole portion
Hole portion for smooth rotating of Counter shaft
Drum portion for smooth reciprocating in Barrel
68
49
70
Counter weight
Counter shaft
Plane bearing 34
(Component of Bearing
box complete)
37
Barrel
69
78
71
68
67
67
69
70 Pin 10
71 Bearing box complete
78 O ring 74
Fig. 3
a little
Pin 12
Piston
45
47
48

P 4/ 19
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-1. Controller, Switch
DISASSEMBLING
ASSEMBLING
M6x30
Hex socket
Head bolt (4pcs.)
1. Separate Handle by removing four M6x30 Hex
socket head bolts and two 4x18 Tapping screws.
2. Separate Controller section by removing two
M4x16 Hex socket head bolts.
M4x16 Hex socket
head bolt (2pcs.) 4x18 Tapping
screw (2pcs.) 4x18 Tapping screw
Handle
Strain relief
Controller section
Controller Section can be replaced as illustrated in Fig. 4.
Take the disassembling step in reverse.
Note: Do not forget to mount Pin 4 when replacing switch. (Fig. 5)
Controller
Switch
Controller
cover complete
3. Remove Strain relief.
Controller, Switch and Power supply cord can
be removed from Controller cover complete.
Fig. 4
Fig. 5
Power supply cord
Pin 4
Switch
[3]-2. Tool holder section (HM1307C, HM1317C)
DISASSEMBLING
ASSEMBLING
(1) Tool holder section can be disassembled from Barrel as illustrated in Fig. 6
(2) Tool holder section is can be disassembled as illustrated in Fig. 7.
Take the disassembling step in reverse.
Fig. 6 Fig. 7
1. Remove Handle section
and stand the machine.
2. Remove M8x35 Hex
socket head bolts with
Hex wrench 6 and Pipe.
Hex wrench 6
Pipe as
extension bar
1R306
1R258 (2pcs.)
Tool retainer
Tool retainer sleeve
Compression
spring 17
1R239 or
1R284
Tool holder
1. Attaching 1R239 or 1R284 to 1R306,
set the 1R306 to Arbor press.
2. Put Tool holder on 1R258.
3. Press the 1R239 or 1R284 with Arbor press.

1R348
Remove Spring pin 8-40 from
the hinges of Tool retainer using
1R348.
Remove Tool retainer shaft
using slotted screwdriver.
Tool retainer can be removed.
P 5/ 19
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-2A. Tool holder section (HM1307CB, HM1317CB)
DISASSEMBLING
Fig. 6A
Fig. 7A
1R045
1. Put 1R347 onto the loop portion
of Tool retainer pole.
2. Pull Retainer ring and Compression
ring 17 using 1R045 with 1R346 and
1R347.
3. Pin 4 can be pulled out from Tool
retainer pole.
Tool retainer shaft
Tool retainer of HM1307CB and HM1317CB can be repaired without removing Tool holder from Barrel.
Stand the machine, remove Handle section and stand the machine.
(1) The component parts for Tool retaining mechanism can be disassembled as illustrated in Figs. 6A and 7A.
Tool retainer
Tool holder
Spring pin 8-40
1R346
1R347
Retainer ring
Retainer ring
Compression
spring 17
Compression
spring 17
Pin 4
Hex wrench 6
Pipe as extension bar
Tool retainer pole
4. Remove Pin 4 from the
another side of Tool
retainer pole in the same
way.
Tool retainer pole.
5. Tool retainer pole, Compression
spring 17 and Retainer ring can
be removed from Tool holder.
6. Removing six M8x35 Hex socket
head bolts, disassemble Tool holder
from Barrel.
M8x35 Hex socket head bolt (6pcs.)

Facing taper formed side
to Tool retainer hole,
insert Tool retainer shaft.
Facing this depressed portion
to the round side of Tool holder,
insert Tool retainer shaft into the
holes of Tool retainer.
P 6/ 19
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-2A. Tool holder section (HM1307CB, HM1317CB) (cont.)
ASSEMBLING
Fig. 8
Fig. 9
(1) Assemble Tool retainer pole, Compression spring 17, Retainer ring and Pin 4 using 1R347, 1R045 and 1R346. (Fig. 7A)
(2) While paying attention to directions of the parts shown in Fig. 8, assemble Tool retainer and Tool retainer shaft. (Fig. 9)
Tool holder
Facing the Arch formed
portion to the round side
of Tool holder, set Tool
retainer in place.
round side of
Tool holder
Tool retainer
Note in Assembly of Tool retainer and Tool retainer shaft
round side of
Tool holder
Tool retainer
pole
Tool holder
Tool retainer
shaft
Tool retainer shaft
Tool retainer pole Retainer ring
Tool retainer
Tool retainer
After inserting Tool retainer
shaft, pass thin bar through
the holes of Tool retainer and
Tool retainer shaft in order to
set the Passing holes for Spring
pin 8-40 to the in-line position.
Compression spring 17 pulls Tool retainer pole toward Retainer ring side. Consequently, holes for
passing Tool retainer shaft are not in line.
Pass Tool retainer shaft through the holes of Tool retainer, Tool retainer pole and Tool holder while
lifting up Tool retainer pole to set in-line with a slotted head screwdriver.
Spring
pin 8-40
Mount Spring
pin 8-40.

The following parts come out
from Tool holder.
P 7/ 19
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-3. Inside of Tool holder section, Impact bolt
DISASSEMBLING
ASSEMBLING
Fig. 10
Fig. 11
Fig. 12
(1) Disassemble Handle section as illustrated in Fig. 4 and stand the machine as illustrated in Fig.5.
(2) Remove six M8x35 Hex socket head bolts with Hex wrench 6 and disassemble Tool holder section as illustrated in
Figs. 10 and 11.
Tool holder
Urethane ring
Flat washer 24
(Refer to Fig. 12.)
Washer 30
O rings and X ring can be replaced.
Rubber ring 36
Shoulder ring 32
Sleeve 43
*Sleeve 43
Impact bolt
*Impact Bolt
Sleeve 43 and Impact bolt are not interchangeable
between CB models and C models.
HM1307CB,
HM1317CB
HM1307CB,
HM1317CB
HM1307C,
HM1317C
HM1307C,
HM1317C
63mm 55mm
Hex Wrench 6
Before separating Tool holder section,
strike machine with the grip end of
Plastic hammer as illustrated below.
Pipe
(as Extension bar)
O ring 67
Tool holder
Take the disassembling step in reverse. Pay attention to the directions and difference shown in Fig. 12.
O ring 45
O ring 36
X ring 36
*Sleeve 43 *Impact Bolt
Remove six M8x35 Hex socket
head bolts with Hex wrench 6
as illustrated below.
Washer 30
Rubber ring 36
Shoulder ring 32
X ring 36 O ring 36
Pay attention to the directions

P 8/ 19
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-4. AVT Mechanism of HM1317C and HM1317CB
DISASSEMBLING
Fig. 13
Fig. 14
(1) Disassemble Handle section as illustrated in Fig. 4 and stand the machine as illustrated in Fig.5.
(2) Disassemble Cylinder 52 from Crank housing. (Figs. 13 and 14)
Note in disassembly
No need to remove two O rings 45
from Cylinder 52 for disassembling
AVT mechanism.
Do not lay the machine when removing Cylinder 52.
(Pin 6 for AVT mechanism falls off Crank housing
by laying the machine.)
Remove four M8x40 Hex socket
head bolts with Hex wrench 6.
And separate Barrel section from
Crank housing complete.
Put 1R023 on Crank housing complete and then lever up Cylinder 52 using the
end of 1R023 and a couple of 1R263.
Striker and O ring 42 can be removed.
Barrel
section
Pipe as
extension
bar
Hex
wrench 6 1R023
Cylinder 52 1R2631R263
Cylinder 52
Striker
O ring 42
1R023
Pin 6
Also in case of HM1307C, HM1307CB (without AVT. mechanism), Cylinder section can be removed using 1R023 and
1R263 as illustrated in Fig. 14.
O ring 45 (2pcs.)
Rear cover (with AVT.mark)
Crank housing complete

P 9/ 19
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-4. AVT Mechanism of HM1317C, HM1317CB (cont.)
DISASSEMBLING
Fig. 15
Fig. 16
(3) Disassemble Ring spring 55 which secures the component parts for AVT mechanism as illustrated in Fig. 15.
Remove 2pcs. of O ring 45
from Cylinder 52.
And remove another
Ring spring 55
from Cylinder 52.
Remove the component parts for AVT as follows.
Weight guide (2pcs.) can be removed from
Counter weight in this step.
1R306
1R003 with
1R212
Shoulder
sleeve
Ring
spring 55
1R024
or
1R356
Set 1R306 to Arbor press.
Attach two pcs. of 1R024 or 1R356
to 1R306 keeping 67mm distance.
Stand the Cylinder on the
O ring 45 assembled side.
Pressing down Shoulder sleeve,
remove Ring spring 55.
1R024
or
1R356
Arbor Press O ring 45
(2pcs.)
O ring 45
(2pcs.)
Shoulder
sleeve
Compression
spring 66
Compression spring 66
Drive sleeve
Weight guide
Counter weight
Cylinder 52
Cylinder 52
Ring spring 55
Ring spring 55
Rear cover
(with AVT mark)
Crank housing
ASSEMBLING
(1) Assemble ring spring 15 and 2 pcs. of O ring 45 to Cylinder 52. And then, assemble the component parts for AVT
mechanism. Refer to Figs. 16 and 15.
(2) Insert Pin 6 into the position illustrated in Fig. 17.
Pin 6
Fig.17

P 10/ 19
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-4. AVT Mechanism of HM1317C, HM1317CB (cont.)
ASSEMBLING
DISASSEMBLING
(3) Assemble the Cylinder section to Crank housing by striking with plastic hammer.
Pay attention to the position of Distinction mark and assemble Barrel to Crank housing as illustrated in Fig. 18.
1. Disassemble Gear cover and Rear cover
from Crank housing complete.
2. Flat washer 14 (2pcs.), Gear complete 31-43,
Needle cage (2pcs.), Nylon ring 14 can be removed.
The screw holes of Barrel can not align with those
of Crank housing when the distinction mark of Barrel
does not face Rear cover side. Consequently, it is
impossible to secure Barrel with Bolts.
Fig. 18
Rear cover
(with AVT mark)
Distinction mark
Assemble Barrel, facing the distinction mark
to Rear cover side. And secure it with M8x40
Hex socket head bolts.
Rear cover
(with AVT mark)
[3]-5. Crank section, Gears
(1) Separate Handle section and remove Controller and electrical parts as the right illustration in Fig. 4.
(2) Disassemble Tool holder section, Barrel and Cylinder section as illustrated in Fig. 14.
(3) Disassemble Gear complete section as illustrated in Fig. 19.
Fig. 19
Helical gear 47
Piston
M6x30 Hex socket
head bolt (6pcs.)
M6x30 Hex socket
head bolt (6pcs.)
3. Turn Helical gear 47 until Piston is
completely pushed out.
O ring 45 and O ring 42 can be replaced.
Rear cover
Gear cover
Gear complete
31-43
Flat washer 14
Flat washer 14
Nylon ring 14
Needle cage 1412
(2pcs.)
O ring 45
O ring 42
Crank housing complete

P 11/ 19
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-5. Crank section, Gears (cont.)
DISASSEMBLING
DISASSEMBLING
(4) Disassemble Armature as illustrated in Fig. 20.
1. Disassemble Crank cap. 2. Set Crank shaft and Connecting
rod of Piston to the position
illustrated below.
Fig. 20
(HM1307C, HM1307CB without AVT mechanism)
(5A) Disassemble Crank section as illustrated in Figs. 21A and 22A.
Fig. 21A
Fig. 22A
1R217
Helical gear 47
Connecting rod of Piston
Crank shaft
Crank housing
complete
Crank shaft
Ball bearing
6204LLB
Crank cap
4. Putting Crank housing complete on 1R217, press Crank shaft with Arbor
press. Crank shaft can be removed from Helical gear 47.
Ball bearing 6204LLB still remains in Crank housing complete.
Detach Spiral spring
from Carbon brush.
By pulling Carbon brush,
disconnect its contact with
Armature's commutator.
1R045
Disassemble Motor section (Motor housing, Armature,
Field, Brush holder unit etc.) using 1R045 with 1R346.
1R346
3. Piston can be pulled off from
Connecting rod.
O rings on Piston can be replaced.
See Fig. 19.
Piston
Connecting
rod
1R246
Motor section
1R252
5 Inserting 1R252 from the Crank
shaft side, press the 1R252 with
Arbor press.
Ball bearing 6204LLB can be
disassembled from Crank housing
complete.
Helical gear 47
Crank shaft
Ball bearing
6204LLB

P 12/ 19
Repair
[3]-5A. Crank section, Gears
(HM1317C, HM1317CB with AVT mechanism)
[3] DISASSEMBLY/ASSEMBLY
[3]-5. Crank section, Gears (HM1307C, HM1307CB without AVT mechanism)
DISASSEMBLING
1. Remove Crank cap cover,
levering up it with Slotted
head screwdriver.
And remove M6x30 Hex
socket head bolts.
2. Twist the Slotted head screw drivers
inserted into the gap between Bearing
box complete and Crank housing
complete. Bearing box complete can be
removed from Crank housing complete.
(5B) Disassemble Crank section as illustrated in Figs. 21B and 22B.
Fig. 21B
Fig. 22B
Retaining
ring S-8
Needle
bearing
1813
Ball bearing 608ZZ
Shoulder
washer 8
1R045
1R346
1R291
Crank cap
cover
Bearing box
complete
M6x30
Hex socket
head bolt (3pcs.)
Pay attention, not to lose
Pin 10 when removing the
Bearing box complete.
The Pin 10 is an important
parts for AVT mechanism.
Pin 10 is mounted
in the opposite side
of this part. Pin 10
Bearing box
complete
Bearing box complete
Counter
shaft
Retaining
ring R-22
1R291
Counter shaft
Fig. 23A
Crank cap
O ring 87
(6A) O rings on Crank cap and Crank cap cover, and Filter can be replaced. See Fig. 23A.
O ring 74
Crank cap section can be disassembled.
Crank cap
cover
Filter
DISASSEMBLING

P 13/ 19
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-5. Crank section, Gears (HM1317C, HM1317CB with AVT mechanism)
(8B) Crank shaft and Helical gear 47 can be disassembled as illustrated in Fig. 25B.
Fig. 24B
Bearing box
complete
O ring 87
(7B) O rings on Bearing box complete, Crank cap cover, and Filter can be replaced. See Fig. 24B.
O ring 74
O ring 17
Crank cap section can be
disassembled.
Crank cap
cover
Filter
DISASSEMBLING
Fig. 25B
1R217
Helical gear 47 Helical gear 47
Crank housing
complete
Crank shaft Ball bearing
6204LLB
4. Putting Crank housing complete on 1R217, press Crank shaft with Arbor
press. Crank shaft can be removed from Helical gear 47.
Ball bearing 6204LLB still remains in Crank housing complete.
1R246 1R252
(5) Inserting 1R252 from the Crank
shaft side, press the 1R252 with
Arbor press.
Ball bearing 6204LLB can be
disassembled from Crank housing
complete.
2. Set Crank shaft and Connecting
rod of Piston to the position.
Connecting rod of Piston
Crank shaft Crank shaft
3. Piston can be pulled off from Connecting rod.
O rings on Piston can be replaced in this step.
See Fig. 19.
Piston
Connecting rod
(6B) After removing Bearing box complete as illustrated in Fig. 20B, Crank shaft comes into your sight.
Remove Piston as illustrated in Fig. 23B.
Fig. 23B
Ball bearing

P 14/ 19
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-5. Crank section, Gears
ASSEMBLING
(1) Assemble Crank shaft as illustrated in Fig. 26.
(2A) Assemble Piston to Crank shaft. and assemble Crank cap section. Refer to Fig. 21A.
(2B) Assemble Bearing box complete by taking the disassembling step in reverse. Refer to Figs. 24B,23B, 22B and 21B.
When mounting Bearing box complete to Crank housing, pay attention to Fig. 27.
Fig. 26
Fig. 27
Ball bearing
6205LLU
Assemble Ball bearing
6205LLU to Crank shaft.
Assemble the Crank shaft to
Crank housing complete with
Arbor press by passing it
through Ball bearing 6204LLB.
Assemble Ball bearing 6204LLB to Crank housing
complete with Arbor press.
Crank housing
complete
Crank shaft
Crank shaft
Crank shaft
1R031
Supporting the assembled Crank shaft with 1R252,
mount Helical gear 47 to the Crank shaft by pressing
it with Arbor press.
Helical gear 47
Ball bearing
6204LLB
Ball bearing
6204LLB
Ball bearing
6204LLB
Ball bearing
6204LLB
Note: Ball bearing 6204LLB protrudes from
the original position in Crank housing
complete slightly when pressing Crank
shaft with arbor press as illustrated above.
This protrusion is disappeared by
pressing Helical gear 47 as illustrated
left.
1R252
for supporting
Crank shaft
Note: Impossible to properly assemble Bearing box complete
to Crank housing complete without engaging Counter
shaft with Crank shaft.
Find out the engaging point that Bearing box complete
plunks down by turning Counter shaft with small wrench.
(HM1307C, HM1307CB without AVT mechanism)
(HM1317C, HM1317CB with AVT mechanism)
small wrench

P 15/ 19
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-5. Crank section, Gears
ASSEMBLING
DISASSEMBLING
ASSEMBLING
(3) Assemble Gear complete section and Motor section as illustrated in Fig. 28.
Note: Do not forget to set two Flat washers 14 in place.
Fig. 28
Fig. 29
Needle bearing 1813
(2pcs.)
Flat washer 14 (2pcs.)
Gear complete 31-43
Nylon ring 14
[3]-6. Motor section
Motor section
Motor housing
Pull Armature out of Motor
housing.
Do not lose Wave washer 19
and Washer guide 19 in this
step.
Sealing screw, Ball bearing
6302LLU and Flat washer 15
can be removed from Armature.
After Inserting two 1R022 into the gap between
Ball bearing 6203LLU and Fan 80, Press Armature
shaft using Arbor press and 1R023.
Washer guide
Note: Do not forget to mount the following small parts.
* Flat washer 15: between Ball bearing 6203LLU and Fan 80 Refer to the right illustration in Fig. 29.
* Wave washer 19 and Washer guide: Motor housing Refer to the left illustration in Fig. 29.
Taking the disassembling step in reverse.
1R022
Ball bearing
6203LLU
1R023
Sealing screw
Flat washer 15
Ball bearing
6302LLU
Ball bearing
6000DDW
Ball bearing 6000DDW can
be removed with 1R269.
Wave washer 19
Armature
(1) Separate Handle section and remove Controller and electrical parts as the right illustration in Fig. 4.
(2) Separate Barrel section and Cylinder section as illustrated in Fig. 14.
(3) Disassemble Gear cover and Rear cover as illustrated in Fig. 19.
(4) Separate Motor section from Crank housing complete as illustrated in Fig. 20.
(5) Disassemble Motor section as illustrated in Fig. 29.
1R022
Fan 80

P 16/ 19
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-7. Switch lever, Slide lever in Handle
ASSEMBLING
Fig. 30
Fig. 31
(1) Assemble Slide lever and Switch lever to Handle section. Refer to Fig. 30.
(2) Assemble Handle to the machine as illustrated in Fig. 31.
(3) Assemble Handle cover to Handle. Refer to Fig. 30.
4x18 Tapping screw
DISASSEMBLING
(1) Separate handle section from the machine as per the left illustration in Fig. 4. Controller, Switch and Power supply
cord can be replaced in this step.
(2) Switch lever and Slide lever can be removed as illustrated in Fig. 30.
Unscrew 4x18 Tapping screw.
Remove Handle cover by levering up
with slotted screwdriver inserted into
the gap between Handle and Handle cover.
4x18 Tapping screw
Disconnect Switch lever from
Slide lever by unscrewing 4x18
Tapping screw. And remove
Switch lever.
Switch lever
Slide lever Slide lever
Slide lever
Remove Slide lever as illustrated
below.
Do not lose Leaf spring in this step.
Handle cover
Handle
slotted screwdriver
Leaf spring
Switch lever
Mount Handle to the machine temporarily,
and check the engaging of Switch lever with
Lever of Toggle switch by operating Slide
lever.
Assemble Handle section to the machine
while engaging Switch lever with Lever
of Toggle switch.
Lever of Toggle
switch

P 17/ 19
Repair
[3] DISASSEMBLY/ASSEMBLY
[3]-10. Fastening torque
Fasten Hex socket head bolts to the fastening torque listed in Fig. A.
30 - 40 N.m
14
Tool holder
Fig. A
Barrel
Gear cover
M8 x 35 4 Fastening Tool holder to Barrel
30 - 40 N.m
M8 x 40 4 Fastening Barrel to Crank housing complete
Fastening Gear cover to Crank housing complete
Fastening Bearing box to Crank housing complete
Fastening Rear cover to Crank housing complete
Fastening Controller to Crank housing complete
Fastening Handle to Crank housing complete
13 - 16 N.m
M6 x 30 6
4 - 6 N.m
M6 x 30 4
4 - 6 N.m
M6 x 30 6
1 - 2 N.m
M4 x 16 1
13 - 16 N.m
M6 x 20 3
35
35 52
52
74
74
108
108
82
82
117
117
Crank housing
complete
Bearing box
complete
Rear cover Handle
Controller
Note: Apply ThreeBond 1342 or Loctite 242 to the threads of all Hex socket head bolts.
Bearing box complete and 74 M6x20 Hex socket bolts are assembled to HM1317C and HM1317CB only.
Item No. Fastening torque
Q’ty
Size Use for
14
35
[4] MAINTENANCE PROGRAM
1. When replacing carbon brush, it is recommended to replace the following maintenance at the same time for longer
service life of the machine. (Fig. B)
2. Wipe off the old grease from Crank housing complete and Gear cover, and then apply the new grease.
Fig. B
Item No. Description
X ring 36
O ring 36
O ring 42
O ring 42
O ring 45
Impact
bolt
22
23
30
47
45
Striker
Piston
22
23
30 47
45

P 18/ 19
Circuit diagram
Wiring diagram
Color index of lead wires' sheath
Brown Lead wire is used for some
countries
Blue Lead wire is used for some
countries.
White Lead wire is used for
some countries.
Controller
Terminal Block
integrated to the
Controller
Switch
Black
White
Blue
Fig. D-1
Fig. D-2
HM1307C / HM1307CB
without No Load Speed
Suppression
Note in Wiring
6 3 1 9 1 6 - 4
LOT No.
LOW
6 3 1 9 1 7 -2
LOT No.
HIGH
HM1317C / HM1317CB
with No Load Speed
Suppression
6 3 1 9 1 9 - 8
100 - 130V
200 - 240V
LOT No.
LOW
6 3 1 9 20- 3
LOT No.
HIGH
Distinctive Indication in Low Voltage area
Distinctive Indication in High Voltage area
HM1307C / HM1307CB
without No Load Speed
Suppression
HM1317C / HM1317CB
with No Load Speed
Suppression
The Controller for HM1307C / CB is different from that for HM1317C / CB as listed below.
The Controller for HM1307C / CB
is different from that for HM1317C / CB.
Pay attention to the description in Fig. D-2
when replacing.
Controller

P 19/ 19
Wiring diagram
Wiring of Carbon Brush
Pig tail Pigtail
Brush holder unit
Fig. D-4
Correct
Motor housing
side
Rear cover
side
Wrong
Correct Wrong
Motor housing
Insert Carbon brush into Brush holder as the left illustration in Fig. D-4.
Insert Carbon brush into Brush holder
so that the pigtail connected portion faces
Motor.
Do not face the pigtail connected portion to
Rear cover side when inserting Carbon brush
into Brush holder.
Brush holder unit
Motor housing
Fig. D-3
Switch
Put Controller’s lead wire into
the slit of Sponge.
Sponge
Do not pinch Lead wires
around designated areas.
Do not protrude Connecting terminals
over Controller cover complete toward
Handle assembling side.
Switch
Connecting
terminal Connecting
terminal
Connecting terminal
Switch lever
Side view of Controller
cover complete
Wiring on Controller cover complete
viewed from Handle side
Controller cover complete