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Makita HM1205C Technical Information

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T
ECHNICAL INFORMATION
Models No.
Description
C
ONCEPT AND MAIN APPLICATIONS
Model HM1205C is a demolition hammer developed from model HM1203C.
Its main features are:
• Enhanced chipping sensation to soft materials
• Unrivalled high efficiency and durability as well as model HM1203C
• No changes for exterior design from model HM1203C
S
pecification
Voltage (V)
110
120
220
230
240
Model No.
Impacts per min.: min.
Shank type
Shank diameter: mm (")
AVT (Anti-Vibration Technology using
Vibration
Active dynamic vibration absorber)
absorption
Vibration absorbing handle
Variable speed control by dial
Soft start
Electronic
Constant speed control
control
Suppression of motor speed
during no-load
Protection from electric shock
Power supply cord: m (ft)
Weight according to
EPTA-Procedure 01/2003*: kg (lbs)
* With Side handle
S
tandard equipment
Side handle (D-shaped) ...................... 1
Bit grease ........................................... 1
Bull-Point 18-280 .............................. 1
Cleaning cloth .................................... 1
Plastic carrying case ........................... 1
Note: The standard equipment for the tool
shown above may vary by country.
HM1205C
Demolition Hammer
Current (A)
Cycle (Hz)
15
50/60
14
50/60
7.8
50/60
7.8
50/60
7.8
50/60
¹ = ipm
ˉ
Continuous Rating (W)
Input
1,510
---
1,510
1,510
1,510
HM1205C
950 - 1,900
Adapted for SDS-MAX bits
Double insulation
Europe: 4.0 (13.1)
Chile, Brazil: 2.0 (6.6)
Other countries: 5.0 (16.4)
O
ptional accessories
Assorted Bull points
Assorted Scaling chisels
Grooving chisel
Bushing tool
Shank (for Bushing tool and Rammer)
Side handle assembly (D-shaped)
Plastic case
Safety Goggle
L
W
Dimensions: mm (")
Length (L)
Width (W)
Height (H)
Max. Output (W)
Output
700
1,600
700
1,600
750
1,800
750
1,800
750
1,800
18 (11/16)
No
No
Yes
Yes
Yes
No
9.7 (21.4)
Assorted Cold chisels
Scaling chisel (for Tile)
Scoop
Rammer
Bit Grease
Hammer grease
Syringe
Hammer Service Kit
PRODUCT
P 1/ 17
H
576 (22-3/4)
128 (5)
265 (10-3/8)

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  • Page 1 HM1205C Description Demolition Hammer ONCEPT AND MAIN APPLICATIONS Model HM1205C is a demolition hammer developed from model HM1203C. Its main features are: • Enhanced chipping sensation to soft materials Dimensions: mm (") • Unrivalled high efficiency and durability as well as model HM1203C...

  • Page 2: Item No

    Chuck ring Inner wall where 8 Tool retainer contacts Tool retainer Belly side where shank of Hammer bit contacts Makita grease N No.2 a Portion where Rubber ring 30 contacts a little Tool holder b Portion where Lock ring contacts Whole portion for smooth action of 24 Tool holder O ring 35.5...

  • Page 3: Table Of Contents

    O ring 44 Whole portion for smooth action of Striker in 36 Cylinder 40 Space between Piston and Striker Cylinder 40 Makita grease R Space between Impact bolt and Striker No. 00 Pin 12 Whole portion a little O ring 31.5...

  • Page 4: Ring

    P 4/ 17 epair [3] ASSEMBLY/ DISASSEMBLY [3] -1. Chuck DISASSEMBLING (1) Remove Handle section as drawn in Fig. 3. Fig. 3 1. Remove six 5x25 Tapping screws. Note: For easy and safety disassembling, Disconnect Connector of Switch from Controller. stand the machine on Work bench Separate Handle section (Handle base, Switch, as drawn below.
  • Page 5 P 5/ 17 epair [3] ASSEMBLY/ DISASSEMBLY [3] -1. Chuck (cont.) DISASSEMBLING (3) Remove the components of Chuck mechanism form Tool holder as drawn in Fig. 5. Fig. 5 2. Change ring is fixed to Change ring cover with 1. Remove Spring guide, Compression spring 56, Retaining ring WR-45.

  • Page 6: Crank Housing

    P 6/ 17 epair [3] ASSEMBLY/ DISASSEMBLY [3] -2. Impact bolt, Cylinder, Striker DISASSEMBLING (1) Impact bolt can be disassembled as drawn in Fig. 7. Fig. 7 1. Remove four M8x35 Hex socket head bolts with 1R231 2. Insert a screwdriver and tap Impact bolt and M5x25 Hex socket head bolt with 1R229.

  • Page 7: Shoulder Sleeve

    P 7/ 17 epair [3] ASSEMBLY/ DISASSEMBLY [3] -2. Impact bolt, Cylinder, Striker (cont.) ASSEMBLING (1) Insert Striker with O ring 31.5 into Cylinder 40 so that O ring 31.5 faces to Crank housing side as drawn in Fig. 10. Fig.
  • Page 8 P 8/ 17 epair [3] ASSEMBLY/ DISASSEMBLY [3] -3. Tool holder section DISASSEMBLING (1) Remove Chuck section. (Refer to Figs 3 to 5.) (2) Remove Housing cover and Impact bolt. (Refer to Fig. 7.) (3) Remove Tool holder section as drawn in Fig. 14. Fig.
  • Page 9 P 9/ 17 epair [3] ASSEMBLY/ DISASSEMBLY [3] -4. Crank section DISASSEMBLING (1) Remove Handle section. (Refer to Fig. 3.) (2) Remove Controller as drawn in Fig. 15. Fig. 15 1. Loosen two 4x14 Tapping screws. And pry off Controller with two slotted screwdrivers. Controller 4x14 Tapping screw (2pcs.)
  • Page 10 P 10/ 17 epair [3] ASSEMBLY/ DISASSEMBLY [3] -4. Crank section (cont.) DISASSEMBLING (5) Separate Motor housing from Crank section as drawn in Fig. 17. Fig. 17 1. Remove six M6x40 Hex 2. Pry off Crank housing from Note: Flat washer 15 may come off. socket button head screws.
  • Page 11 P 11/ 17 epair [3] ASSEMBLY/ DISASSEMBLY [3] -4. Crank section (cont.) DISASSEMBLING Fig. 19 2. Tap Crank housing as drawn below. 1. Turn and set Connecting rod in the position Crank shaft is removed together with Ball bearing 6206LLU, (at the upper dead point) shown below.
  • Page 12 P 12/ 17 epair [3] ASSEMBLY/ DISASSEMBLY [3] -4. Crank section (cont.) ASSEMBLING (1) Assemble Ball bearing 6206LLU and Helical gear 57 to Crank shaft as drawn in Fig. 22. Fig. 22 1. Set Helical gear 57 with the high stepped rim of Helical gear 57 facing to Ball bearing side. And assemble Helical gear 57 with the bearing to Crank shaft as drawn in Fig.
  • Page 13 P 13/ 17 epair [3] ASSEMBLY/ DISASSEMBLY [3] -5. Armature DISASSEMBLING (1) Separate Motor housing from Crank section. (Refer to Figs. 16 and 17.) (2) Separate Gear housing complete from Crank section. (Refer to Fig. 18.) (3) Remove Armature as drawn in Fig. 27. Fig.
  • Page 14 P 14/ 17 epair [3] ASSEMBLY/ DISASSEMBLY [3] -6. Electrical parts in Handle section DISASSEMBLING (1) Disassemble Handle section. (Refer to Fig. 3.) (2) Remove electrical parts as drawn in Fig. 28. Fig. 28 1. Remove two 4x18 Tapping screws and 2.
  • Page 15 P 15/ 17 epair [3] ASSEMBLY/ DISASSEMBLY [3] -7. Fastening torque (1) Tighten the specific bolts and screws to the appropriate points. (Refer to Fig. 29.) Fig. 29 Barrel complete Crank housing cover Crank housing Item No. Description Q’ty Fastening torque M5x25 Hex socket head bolt 3 - 3.5 N.m Gear housing...
  • Page 16 P 16/ 17 ircuit diagram Fig. D-1 Color index of lead wires' sheath Black Connector Switch White Controller Terminal block This Lead wire is brown This Lead wire is blue for some countries for some countries instead of black. instead of white. Power supply cord iring diagram Insert Carbon brush into Brush holder as drawn in Fig.
  • Page 17 P 17/ 17 iring diagram Fig. D-3 Wiring to Switch Connect the insulated connectors so that If the clamped portions of insulated connectors the clamped portions are set inside the are out of the width of Switch, they interfere with width of Switch as shown below.

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