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Makita HK1820 Technical Information

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T
ECHNICAL INFORMATION
Models No.
Description
C
ONCEPT AND MAIN APPLICATIONS
Model HK1820 has been developed as the successor model of HK1810,
featuring vibration absorbing handle additionally to the same compact
and lightweight design as the predecessor model.
Also features the chuck adapted for SDS-PLUS bits.
S
pecification
Voltage (V)
110
120
220
230
240
Impacts per min: ipm=min
Shank type: mm (")
Impact energy [catalog value]: J
Variable speed control
Protection from electric shock
Power supply cord: m (ft)
Net weight: kg (lbs)
S
tandard equipment
Bull point ................................. 1
Scaling chisel ........................... 1
Scaling chisel (for tile) ............. 1
Hook complete ......................... 1
Plastic carrying case ................. 1
Note: The standard equipment for the tool shown above may differ by country.
O
ptional accessories
Bull points
Cold chisel
Grooving chisels
Scaling chisel
Scaling chisel (for tile)
HK1820
Power Scraper
Cycle (Hz)
Current (A)
5.3
50/60
5.0
50/60
2.6
50/60
2.5
50/60
2.4
50/60
-1
by trigger
by dial
Hook complete
Scraper assembly
Grease vessel (containing Hammer grease)
Bit grease
Safety goggles
Get other manuals https://www.bkmanuals.com
Continuous Rating (W)
Input
550
---
550
550
550
0 - 3,200
SDS-Plus
3.9
Yes
Yes
Double insulation
Chile, Brazil: 2m (6.6ft)
Other countries: 5m (16.4ft)
3.3 (7.3)
PRODUCT
L
W
Dimensions: mm (")
Length (L) 351 (13-3/4)
Width (W)
102 (4)
Height (H)
203 (8)
Max. Output (W)
Output
260
390
260
390
260
390
260
390
260
390
P 1/17
H

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Summary of Contents for Makita HK1820

  • Page 1 Description Power Scraper ONCEPT AND MAIN APPLICATIONS Model HK1820 has been developed as the successor model of HK1810, featuring vibration absorbing handle additionally to the same compact and lightweight design as the predecessor model. Also features the chuck adapted for SDS-PLUS bits.

  • Page 2: Necessary Repairing Tools

    [2] LUBRICATION Apply the following lubricants to protect parts and product from unusual abrasion: *Makita grease N.No.1 to the portions designated with black triangle *Makita grease R.No.00 to the portions designated with gray triangle *Makita grease N.No.2 to the portions designated with white triangle Item No.

  • Page 3: Chuck Section

    P 3/17 epair [3] DISASSEMBLY/ASSEMBLY [3] -1. Chuck Section DISASSEMBLY Disassemble the Chuck section as described in Figs. 2 and 3. Fig. 2 1) For easy repairing, separate Handle section and stand the machine on a workbench as illustrated below on right. Note: Remove Compression spring 14 before standing the machine if it is left on Crank housing complete.
  • Page 4 P 4/17 epair [3] DISASSEMBLY/ASSEMBLY [3] -2. Barrel, Tool Holder, Cylinder Section DISASSEMBLY 1) Disassemble the Chuck section as described in Figs. 2, 3. 2) Disassemble Tool holder, Ring 25 and Cylinder section from Barrel as described in Figs. 4, 5, 6. Fig.
  • Page 5 P 5/17 epair [3] DISASSEMBLY/ASSEMBLY [3] -2. Barrel, Tool Holder, Cylinder Section DISASSEMBLY 3) Separate Tool holder from Cylinder section as described in Fig. 7. 4) Disassemble Impact bolt and Cylinder section as described in Fig. 8. Fig. 7 1. Pull out Striker from 2.
  • Page 6 P 6/17 epair [3] DISASSEMBLY/ASSEMBLY [3] -2. Barrel, Tool Holder, Cylinder Section ASSEMBLY Do the reverse of the disassembling steps. Note: Rubber ring 13 is directional when assembled to Impact bolt. Be sure to assemble as illustrated to left in Fig. 9. Fig.

  • Page 7: Motor Section

    P 7/17 epair [3] DISASSEMBLY/ASSEMBLY [3] -4. Motor Section DISASSEMBLY 1) Disassemble Handle section as illustrated in Fig. 2 2) Separate the contact of Carbon brushes from Commutator as described in Fig. 11. 3) Disassemble Crank housing complete from Motor housing as illustrated in Fig. 12. 4) Remove Piston from Crank shaft as illustrated in Fig.
  • Page 8 P 8/17 epair [3] DISASSEMBLY/ASSEMBLY [3] -4. Motor Section DISASSEMBLY 5) Remove Crank section from Crank housing complete by tapping Fig. 14 Crank housing complete with plastic hammer. (Fig. 14) 6) Remove Armature from crank housing complete using 1R023, 1R225 and arbor press as described in Fig. 15. Crank section O Ring 39 Crank housing complete...
  • Page 9 P 9/17 epair [3] DISASSEMBLY/ASSEMBLY [3] -5. Gear (Crank) Section DISASSEMBLY 1) Disassemble Gear (Crank) section from Crank housing complete as described in Figs. 11 - 14. 2) Gear (Crank) section can now be disassembled as described in Fig. 16. Fig.

  • Page 10: Handle Section

    P 10/17 epair [3] DISASSEMBLY/ASSEMBLY [3] -6. Handle Section DISASSEMBLY Handle section consists of the following main parts: Handle base, Handle, Handle cover And it can be disassembled as illustrated in Figs. 17 - 20. Fig. 17 Fig. 18 1. Separate Handle section from the machine first by removing the four 2.

  • Page 11: Maintenance Program

    P 11/17 epair [3] DISASSEMBLY/ASSEMBLY [3] -7. Recommended Fastening Torque of Screws and Bolts Tighten the bolt to the recommended torque described in Fig. 21. Fig. 21 Q'ty Fastening Torque Item No. Description M5 x 25 Hex socket head bolt 7.8 - 11.8 N.m Barrel Crank housing...

  • Page 12: Circuit Diagram

    P 12/17 ircuit diagram Color index of lead wires' sheath Black Clear White Orange Blue Brown Fig. D-1A High Voltage Areas where Radio Interference Suppression Is Required Polyolefin tube (Protective tube) Connector Connector housing A Connector housing B Noise Switch suppressor Choke coil Power supply cord...

  • Page 13: Wiring Diagram

    P 13/17 iring diagram [1] Routing Wires Through Handle Base and Handle Be careful not to pinch the Lead wires with the ribs. (Figs. D-2, D-3) Fig. D-2 Do not to put the Lead wire (clear) of Noise suppressor on these ribs. Handle base Handle base, viewed from...
  • Page 14 P 14/17 iring diagram [2] Wiring in Handle Base and Handle High Voltage Areas where Radio Interference Suppression Is Required Fig. D-4A Handle base, viewed from Controller side Lead wires covered with Polyolefin tube (black) Controller blue Route all of the Controller's Pass these Lead wires from Controller Lead wires through this slit.
  • Page 15 P 15/17 iring diagram [2] Wiring in Handle Base and Handle Low Voltage Areas where Radio Interference Suppression Is Required Fig. D-4B Handle base, Put the slack portion of Fix Grounding wire (clear) viewed from Controller side Grounding wire in this space. with this Lead wire holder.
  • Page 16 P 16/17 iring diagram [2] Wiring in Handle Base and Handle Other Areas where Radio Interference Suppression Is Not Required Fig. D-4C Handle base, viewed from Controller side Lead wires covered with Polyolefin tube (black) Controller blue Route all of the Controller's Lead wires through this slit.
  • Page 17 P 17/17 iring diagram [3] Connecting Connector Housing with Brush Holder Unit Connector housing is directional when connected with Brush holder complete in Motor housing. Be sure to connect as described in Fig. D-6. Fig. D-6 The side where Lead wires are drawn out must be placed on Rear cover side as illustrated blow. Connector housing B (if used) Connector housing A...

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