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HM0860C-TE


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T     ECHNICAL INFORMATION
    Model No.                      HM0860C
                                                                                                                           PRODUCT
                                                                                                                             P 1 /16
                                                                                                                      W
    Description                    Demolition Hammer
                                                                                                                L
CONCEPT AND MAIN APPLICATIONS
   Now the 5 kg class SDS-max demolition hammer has been released.
   Its features and benefits are as follows.
   * SDS-max bit can be used.                                                                                                          H
   * Lightest weight 4.7kg (10.4lbs) in this class, but high performance
   * Electronic features for soft start and speed control
   * Indication lamp informs operator of the machine's condition.
   * 12 angle settings of hammer bit




                                                                                                        Dimensions : mm ( " )
                                                                                                   Length ( L ) 454 (17-7/8)
                                                                                                   Height ( H ) 223 (8-3/4)
                                                                                                   Width ( W )   99 (3-7/8)


  Specification
                                                                                 Continuous Rating (W)
      Voltage (V)               Current (A)                Cycle (Hz)                                           Max. Output(W)
                                                                                Input           Output
           110                        11                    50 / 60             1,100              540                 1,200
           120                        10                    50 / 60             1,100              540                 1,200
           220                        5.6                   50 / 60             1,100              540                 1,200
           230                        5.3                   50 / 60             1,100              540                 1,200
           240                        5.1                   50 / 60             1,100              540                 1,200


    Blows per min: bpm=min -1                                  1,100 - 2,650
    Shank                                             SDS-max Diameter :18mm (11/16")
    Single blow energy : J                                      1.8 - 12
    Protection from electric shock                         by Double insulation
    Cord length : m (ft)                              5.0 (16.4) For Europe : 4.0 (13.1)
    Net weight :Kg (lbs)                                         4.7 (10.4)


 Standard equipment
   * Bar style side handle ............................ 1 pc.
   * Bit grease .............................................. 1 pc.
   * Plastic carrying case ............................. 1 pc.

   < Note > The standard equipment for the tool shown may differ from country to country.

 Optional        accessories
   * Various bull points                    * Clay spade                * Shank for rammer          * Hammer service kit
   * Various cold chisels                   * Bushing tool              * Shank for bushing tool      (a set of repairing parts)
   * Various scaling chisels                * Rammer                    * D formed side handle
                                                                                                                             P 2 /16
Features              and benefits
                                                                                Ergonomically designed barrel allows
                                                                                your hand to fit the tool perfectly.
               The lightest hammer in 5kg class
               weighs only 4.7kg (10.4 lbs).                                                    Plastic cover on the housing, for
                                                                                                protecting operator completely from
                                                                                                electric shock
          SDS-max bit can
          be used.
                                                                                               Slide type ON-OFF switch

  One-action slide chuck for rapid
  and easy replacement of bit                                                                  Soft grip for comfortable work


   12 angle settings of hammer bit                                                             Speed presetting dial


   * Service remainder light telling you                       HM0860C                         Electronic features for
     to replace carbon brush                                                                   * Soft start
   * Warning lamp indicating when there                                                        * Keeping a preset speed
     are troubles in switch or cord                                                              constantly

Comparison                of products
                            Model No.                    MAKITA                    Competitor A Competitor B Competitor C
 Specifications                           HM0860C        HM1100C         HM810/T/B   Model A      Model B     Model C
 Power input : W               1,100         1,050                           900           1,100         1,050             900
 Rated amperage in USA ; A       10            11                            8.3
 Blows per min : bpm=min-1 1,100 - 2,650 1,300 - 2,650                      2,900     1,300 - 3,000    3,000     1,860 / 2,630
 Electronic speed control       Yes           Yes                            No           Yes            No           Yes
 Single blow energy : J       1.8 - 12      4.7 - 9.6                        7.6          2 - 12        12.5        2.6 / 5.2
 Anti-vibration handle          No             No                            Yes           Yes          Yes            No
 Soft grip                      Yes           Yes                            No            Yes          Yes           Yes
                                                                         Trigger type               Trigger type Trigger type
 Switch                                    Slide type     Slide type                   Seesaw type
                                                                         w/ Lock ON                 w/ Lock ON w/ Lock ON
 Double insulation                            Yes            Yes             Yes          Yes           Yes           Yes
                                           A :4.0
  Cord length : m                            (13.1)           5.0             5.0            5.0           5.0              5.0
               ( ft )                      B :5.0           (16.4)          (16.4)         (16.4)        (16.4)           (16.4)
                                              (16.4)
                                                                          C : 5.3
   Net weight in                               4.7           6.1            (11.7)          5.5           5.9              5.2
   catalog :Kg ( lbs )                       (10.4)         (13.5)        D : 5.5          (12.1)        (13.0)           (11.5)
                                                                            (12.1)
                                                                          E : 410
                                                                             (16-1/8)
                                              454            524          F : 423           455           454              440
                 Length ( L ) : mm          (17-7/8)       (20-5/8)          (16-5/8)     (17-7/8)      (17-7/8)         (17-1/4)
                               (")
                                                                          G : 428
  Dimensions




                                                                             (16-7/8)
                 Height ( H ) : mm           223            224              243            235           230               210
                               (")          (8-3/4)        (8-7/8)         (9-9/16)        (9-1/4)        (9)             ( 8-1/4 )
      Width ( W ) : mm                        99             98               96            102           106                90
                    (")                     (3-7/8)        (3-7/8)          (3-3/4)         (4)         (4-3/16 )         (3-1/2 )
 H: Vibration : m/s2                           11             9               12             11                              12
 I: Sound power level : dB(A)                 100            98               99            101                        less than 108

 * A : For Europe                    * B : For others than Europe      * C : For HM0810       * D : For HM0810B and HM0810T
 * E : For HM0810                    * F : For HM0810B                 * G : For HM0810T
 * H : Vibration : m/s2 : measured under the loaded condition conforming to EN standards.
 * I : Sound power level : dB(A) : measured under the loaded condition conforming to EN standards.
                                                                                                              P 3 /16

Comparison       of products

 Comparison of chipping amount
 The numbers on the bar graphs below are relative values when the capacities of Competitor A are indexed at 100.
 * Material : concrete with compressive
              strength, 35N/mm2
 * Chipping direction : horizontal as illustrated below




                                                            Concrete
                                                            35N/mm2




 MAKITA HM0860C                               110
 MAKITA HM1100C                               105

 Competitor A Model A                         100

 Competitor B Model B                           65

 Competitor C Model C                           65
                              0                 50             100             150
                                                                                                                                                   P 4 /16
Handling
Refer to instruction manual for handling of the tool and follow the instructions.
Repair
<1> Necessary repair tools
(Code No.)                           (Tool Name)
  1R003           Retaining ring pliers ST-2N 250mm for external ring
  1R269           Bearing extractor
  1R034           Bearing setting plate 12.2
  1R005           Retaining ring pliers RT-2N 250mm for internal ring
  1R225           Bearing extractor
  1R214           Taper sleeve

<2> Lubrication
Apply a tube (30g) of Makita grease R No. 00 in total to the portions designated by arrows as shown below.
Also apply a little bit of Makita grease N No.2 to the portions by designated by circles.
                        Contact area of urethane ring 28
                        and Flat washer 29: 0.1g
Inside lip of tool holder cap                                                            Surface of               The remaining Makita grease R. No.00 (25.0g):
: 0.5g                                  Surface of tool holder: 0.2g                     o-ring 24: 0.2g          In the crank room

                                                           Contact area of rubber ring 20                        Surface of
                                                           and cup washer 23: 0.2g                               pin 8: 0.2g
      Contact area of tool retainer     Surface of                                             Surface of                                   Contact area of piston and
      and bull point installed: 0.5g    o-ring 38: 0.2g                                        o-ring 26: 0.2g                              crank shaft complete: 0.2g
                                                                       Surface of
                                                                       o-ring 24: 0.5g
                                                                                                                                     Contact area of crank shaft
                                                                                                                                     complete and flat washer 14: 0.1g




                                                    Contact area of cup washer
                                                    and guide ring: 0.2g                                                            Contact area of flat washer 14 and
                                                                                                                                    crank housing complete: 0.1g
Surface of steel ball 4.8: 1.0g

                                               Surface of o-ring 23 and              Contact area of slide sleeve
                                               fluoride ring 28: 1.0g                and cylinder 32: 0.2g
                                                                                                           Inside of sleeve: 0.1g

                                       Surface of urethane ring        Surface of striker: 3.0g                                Engaging area of gears of armature and
                                       and tool holder: 0.1g                                                                   crank shaft complete: 0.2g


<3> Fastening torque for screws/bolts
Fasten various screws/bolts of the tool with specified torque as shown below.

            Screws/bolts                       Position in use               Fastening torque
                                                    Handle                  1.8 up to 3.5 N.m.
     M5x20 Pan head screws
                                                  Crank cap                 1.8 up to 3.5 N.m.
                                                    Handle                  2.5 up to 3.0 N.m
       5x25 Tapping screws
                                               Motor housing                2.5 up to 3.0 N.m
                                                 Strain relief              1.3 up to 1.8 N.m
                                                 Rear cover                 1.3 up to 1.8 N.m
       4x18 Tapping screws
                                            Brush holder cover              1.3 up to 1.8 N.m

                                                 Switch box                 1.3 up to 1.8 N.m
  M5x25 Hex. socket head bolt               Crank housing cover             4.9 up to 7.4 N.m
  M6x30 Hex. socket head bolt                        Barrel                 7.8 up to 12.0 N.m
             M6 Hex. nut                               Fan                  1.8 up to 3.7 N.m
                                                                                                         P 5 /16
<4> Disassembling/Reassembling Chuck Portion
  <4>-1. Disassembling Chuck Section                                   Fig. 1
                                                                                                   Tool holder cap
        (1) Slide Chuck cover in the direction of Gear housing,
            and remove Tool holder cap from the machine.
           (Fig. 1)

        (2) Remove Chuck cover from Tool holder.
                                                                       Chuck cover



        (3) Remove Ring spring 25 from tool holder using Retaining ring pliers ST-2N (1R003).
            And then remove Flat washer 28, Urethane ring 28 and Chuck ring from Tool holder.

        (4) Remove two Tool retainers from Tool holder by pulling them out with long nose pliers etc.
           while pressing Spring guide in the direction of Gear housing. (Fig. 2)
            Note: Be sure to release Spring guide slowly as soon as the two Tool retainers are removed,
                  or Spring guide and Compression spring 52 will pop out.
        Fig. 2

        Ring spring 25     Chuck ring         Tool retainer (2 pcs.)   Spring guide        Compression spring 52




        Flat washer 28    Urethane ring 28




                                                                                        (to the machine)


                                      Tool holder


  <4>-2. Reassembling Chuck Section
        (1) Pressing Spring guide in the direction of Gear housing, insert two Tool retainers to the oval holes
           on Tool holder. (Fig. 3)
           Note: 1) Be sure to insert Tool retainers.
                  2) As soon as Tool retainers are set in place, release Spring guide so that Tool retainers
                     can be set in place.
        Fig. 3

         Tool retainer            Spring guide

                                        Compression spring 52




                                           Tool retainer



                                          (Image of inside
                                            of the spring)
                                                                                                       P 6 /16
      (2) Install Chuck ring, Urethane ring 28 and Flat washer 28 on Tool holder as in Fig. 4,
          and then set Ring spring 25 with Retaining ring pliers ST-2N (1R003).
      Fig. 4

                                              Urethane ring 28 (reversible when assembled to Tool holder)
         Ring spring 25     Flat washer 28                   Chuck ring




<5> Disassembling/reassembling Change Ring
  <5>-1. Disassembling Change Ring
      (1) Remove Ring spring 50 from Change ring with slotted screwdriver.
          Note: Be careful not to let Ring spring 50 pop out.
      (2) Remove Plate.
      (3) Remove Steel ball 4.8 (4 pcs.) by moving Change ring back and forward,
         and you will find Steel balls stuck to the grease on the four grooves of Tool holder.
      (4) Now Lock ring and Change ring can be removed.

  <5>-2. Reassembling Change Ring
      (1) Fix Lock ring to Change ring as in Fig. 5 so that the depressions of Lock ring can face the direction of
          bit side.
      (2) Put Steel ball 4.8 (4 pcs.) in the four grooves of Tool holder and depressions of Lock ring.
         Note: Lock ring is not reversible.
      (3) Put Plate in place, and then put Ring spring 50 in the groove of Change ring using slotted driver, etc.
       Fig. 5

                          Ring spring 50              View of Lock ring from bit side

        Bit side          Plate                           [wrong]             [correct]
                           Lock ring
                                Change ring

                                    Steel ball 4.8


                                                      Four depressions     Four depressions       Change ring
                                                      for Steel ball 4.8   for Steel ball 4.8     assembled
                              Tool holder                                                         to Lock ring
                                                      cannot be seen.      can be seen.


<6> Disassembling/reassembling Armature Assembly
  <6>-1. Disassembling Armature Assembly
      (1) Remove Crank housing cover after disassembling Chuck section.
      (2) Remove Handle by removing M5x20 Pan head screws (2 pcs.) and 5x25 Tapping screw (2 pcs.).
          and then disconnect Connectors.
      (3) Remove 4x18 Tapping screws on both sides of Motor housing with Phillips screwdriver. (Fig. 6)
      (4) Remove Brush holder covers with slotted screwdriver inserted into the inserting spaces as in Fig. 7.
      Fig. 6                                                   Fig. 7



       4x18 Tapping screw                                       Inserting space for
                                                                slotted driver


       Phillips Screwdriver                                     Slotted screwdriver
                                                                                                            P 7 /16
                                                                       Fig. 8
    (5) Separate Rear cover from Motor housing by removing
        four M4x18 Tapping screws as in Fig. 8.


    (6) Remove Fan 76 as described below;
        Holding Fan by hand, turn M6 Hex. nut located under             Motor housing
        Fan 76 counterclockwise with an M10 hex socket attached
        to Makita impact driver.                                         4x18 tapping screw
       Caution: Be sure to wear gloves when you hold Fan 76              (4 pcs.)                           Rear cover
                 on removing M6 Hex. nut, or Fan 76 could
                 injure your hand.


    (7) Armature assembly can be separated from Motor housing complete by removing four 5x25 Tapping screws that
        fasten Crank housing to Motor housing complete.
        Armature assembly will be removed from Motor housing complete together with Crank housing. So remove
        Armature assembly from the Crank housing by knocking on the end of Crank housing with wooden or plastic
        hammer.
    (8) Remove Ball bearing 6201LLU and Sleeve 12 from Armature assembly at the same time using Bearing
        extractor (1R269).
    (9) Remove Ball bearing 608DDW and Insulation washer from Armature assembly at the same time using Bearing
        extractor (1R269).

<6>-2. Reassembling Armature Assembly
    (1) After setting Flat washer 12 in place, press-fit Ball bearing 6201LLU to the drive-end of armature shaft using
       Bearing setting plate 12.2 (1R034) and arbor press. (Fig. 9)
       Note: Don't forget to set Flat washer 12.
    (2) Gently press-fit Sleeve 12 to the drive-end of armature shaft using Bearing setting plate 12.2 (1R034) and arbor
        press. (Fig. 9)
     Fig. 9

                           Ram of arbor press

                                   Flat washer 12            



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