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MT811-TE


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T     ECHNICAL INFORMATION
    Model No.                    MT811                                                       W
                                                                                                                     PRODUCT
                                                                                                                       P1/8

    Description                  13mm (1/2") Hammer Drill                                        L

CONCEPT AND MAIN APPLICATIONS
   New power tool series from MAKITA
   * Less expensive but service life is as long as existing                                                            H
     MAKITA models.
   * Easy to-repair-construction




                                                                                       Dimensions : mm ( " )
                                                                                  Length ( L ) 272 (10-3/4)
                                                                                  Height ( H ) 194 (7-5/8)
                                                                                  Width ( W )   71 (2-13/16)



  Specification
                                                                             Continuous Rating (W)
       Voltage (V)              Current (A)              Cycle (Hz)                                     Max. Output(W)
                                                                            Input           Output
          220                       2.0                     50 / 60         430              220               340
          230 / 240                 1.9                     50 / 60         430              220               340

    No load speed : (min -1= rpm)    0 - 2,800
    Blows per min. : (min -1= bpm) 0 - 30,800
    Keyless chuck                       No
    Chuck ability : mm ( " )       1.5 - 13 (1/16 - 1/2)
                         Steel       13 (1/2)
    Drilling
    capacity : mm ( " ) Wood         18 (11/16)
                         Concrete    13 (1/2)
    Reverse switch                      Yes
    Protection from electric shock by double insulation
    Cord length : m ( ft )              2.0 (6.6)
    Net weight :Kg (lbs )               1.6 (3.5)


 Standard equipment
    * Chuck key S13 ............................................... 1 pc.
    * Side grip     ............................................... 1 pc.
    < Note > The standard equipment for the tool shown may differ from country to country.


 Optional        accessories
     * Stopper pole
Features             and benefits                                                                            P2/8

                            Easy to change working mode         Distinctive orange color
                            with slide type change lever.       for MAKTEC series model
                            Percussion drill     Drill

                                                                                   Variable speed control
                                                                                   switch with reversing action


                                                                                           Durable motor housing of
                                                                                           cylindric structure.




                  Spindle equipped with
                  dust proof ball bearing




               Easy to disassemble and assemble
               because of main parts fastened with
               machine screws                               Dust proof washer on all ball bearing,
                                                            for protecting from the dust

Comparison               of products

                     Model No.                    MAKITA                          Competitor A
 Specifications                       MT811                 HP1300S                   Model A
 Chuck ability : mm ( " )       1.5 - 13 (1/16 - 1/2) 1.5 - 13 (1/16 - 1/2)      1.5 - 10 (1/16 - 3/8)
 Input                                  430                   430                       400
 No load speed : (min -1= rpm)       0 - 2,800             0 - 2,700                  0 - 2,600
 Blows per min. : (min -1= bpm)     0 - 30,800            0 - 29,700                 0 - 41,600
                      Steel          13 (1/2)              13 (1/2)                    8 (5/16)
 Drilling
 capacity : mm ( " ) Wood            18 (11/16)            18 (11/16)                 20 (13/16)
                       Concrete     13 (1/2)               13 (1/2)                  10 (3/8)
 Protection from electric shock by double insulation by double insulation        by double insulation
       Length ( L ) : mm                 272                   278                        275
  Dimensions




                      (")             (10-3/4)                 (11)                    (10-7/8)
       Width ( W ) : mm                   71                     67                        76
                      (")              (2-13/16)               (2-5/8)                     (3)
       Height ( H ) : mm                194                   192                        200
                      (")             (7-5/8)               (7-9/16)                   (7-7/8)
 Cord length : m ( ft )              2.0 (6.6)             2.5 (8.2)                  2.0 (6.6)
 Net weight :Kg (lbs )               1.6 (3.5)             1.7 (3.7)                  1.6 (3.5)
 Repair                                                                                                               P3/8
< 1 > Lubrication
     Apply MAKITA grease N. No.1 to the following portions marked with black triangle to protect
     parts and product from unusual abrasion.
                  Apply 3.6g of the above mentioned grease         Apply 0.1g of the above mentioned grease
                  to the gear room.                                to the steel ball and pin accepting hole.
                                                                                   Cam




                                                     Pin 4          Apply 0.1g of the above mentioned grease
                               Spindle                              to the portion contacting with helical gear 39.
                                         Steel ball 3.5
                Gear housing                              Helical gear 39

< 2 > Disassembling drill chuck
      Firmly hold No.1R139 "Drill chuck extractor" with vise. And lock spindle with the drill chuck extractor.
      Holding No.1R298 "hex socket" with drill chuck, and turn the hex socket with No.1R223 "Torque wrench"
      anti-clockwise. So drill chuck can be disassembled from spindle. See Fig. 1.

< 3 > Assembling drill chuck
      Firmly hold No.1R139 "Drill chuck extractor" with vise. And lock spindle with the drill chuck extractor.
      Holding No.1R298 "hex socket" with drill chuck, and turn the hex socket with No.1R223 "Torque wrench"
      clockwise. So drill chuck can be assembled to spindle. See Fig. 1.
     
     Pre-set the fastening torque of the torque wrench with 25 - 30 N.m, when assembling.
                          No.1R224 Ratchet head
                                           No.1R298 Hex socket




             No.1R223
             Torque wrench
                                                                             1R139 Drill chuck extractor

                                                        Fig. 1
< 4 > Disassembling and assembling cam
      (Disassembling)
      Hold inner housing with vise.
      Insert the screwdriver into the space between cam and inner housing.
      Disassemble cam with the screwdriver as illustrated in Fig. 2.
      (Assembling)
      Assemble cam by pressing with arbor press as illustrated in Fig. 3.


                                          Cam
                                                                                                           Cam



                                                Inner housing
                                                                                                               Inner housing



                               Fig. 2
                                                                                            Fig. 3
 Repair                                                                                                            P4/8
< 5 > Disassembling helical gear 39 See Fig. 4.
     1. Take off retaining ring S12, pin 4 and steel ball 3.5 from spindle.
     2. Set gear housing on No.1R037 "Bearing setting plate", and set No.1R284 "Round bar for arbor" on spindle.
     3. Disassemble spindle by pressing the round bar for arbor set on spindle, with arbor press.
        Then, helical gear 39 can be removed form gear housing.

                                                     Arbor press
                   Pin 4                                                                                    Helical gear 39
                   Steel ball 3.5                   No.1R284
                                                    Round bar for arbor
                    Retaining ring S12
                       Spindle                             Spindle




    
    Be careful, not to lose pin 4,
    steel ball 3.5 and retaining
     ring S12, when removing them.              No.1R037
                                                Bearing setting plate

                                                              Spindle



                                                             Fig. 4
< 6 > Assembling helical gear 39 See Fig. 5.
     1. Assemble spindle by pressing with arbor press.
     2. Assemble helical gear 39 to spindle by pressing 1R028 "Bearing setting pipe" on the helical gear, with arbor press.
     3. Fix helical gear 39 with retaining ring S12, and put steel ball 3.5 and pin 4 into the hole of spindle.

                           Arbor press
                          No.1R284
                          Round bar for arbor
                                                                                                        Pin 4
                               Spindle                                                                  Steel ball 3.5
                                                                        1R028
                                                                                                         Retaining ring S12
                                         Helical gear 39                Bearing setting pipe
                                                                                                            Spindle


                              Gear housing



                                 1R035
                                 Bearing setting plate

                                                             Fig. 5
Circuit   diagram                                                                              P5/8
                                                                           Insulated
     Color index of lead wires                                             terminal
    Black
    White                                                                     Choke coil
    Red
    Orange
    Purple




                                 Choke coil
                                                             Brush                     Field
                                                             holders




                                    Switch
                                    A side


                                    5    4
                                                                       A

                                    3   6
                                                                           Switch

                            2      2a



                                  1a 1b 2b
                             1                                         B


                                    Switch
                                    B side




                                              Noise
                                                suppressor


   Black                                White
   or brown                             or blue
Wiring   diagram                                                                           P6/7

Wiring diagram of field lead wires
                                                                 Put the insulated terminal
 Pass field lead wire (red)                                      into the space illustrated below.
 between rib B and rib C        Field lead wire (red)
 as illustrated below.



 Field lead
 wire (white)                                                  Rib A        Pass field lead wire
                                                              Rib B         (white) between rib A
                                                              Rib C         and rib B.

 Field lead                       Boss A                      Rib D
 wire (black)
                                                              Rib E
                                                                            Pass field lead wire
                                                                            (red) between rib E
                                                              Rib F         and rib F.


                                                                  Pass field lead wire (black)
                    6       4                                     between rib D and rib E.
                                                           Be careful, not to pinch
                   Switch                                  the lead wires connected with
                                                           switch terminal 4 and 6, with boss A.

                                                        Polyethylene tube


                                                  Wiring diagram of lower portion
                   Switch                         of switch



                   Noise
                   suppressor
Wiring  diagram                                                                                       P7/8
 Wiring diagram of wires connected with brush holders                   ( With choke coil)
   Inflect the receptacles as illustrated in Fig. A.                                   Lead wire (purple)
   The receptacle of lower brush holder side has
                                                                                                 Choke coil
   to be so inflected, that it does not cross the line of       .
                                                                                                 (purple)


       Fig. A            Receptacle

       Upper           Brush holder
                                  Choke coil
                                  (orange)                   Boss A
                                                                                       Rib E
                       Brush holder
        Lower            Receptacle                                                    Rib F


                                                                      Pass noise suppressor's lead wire (white)
                                                                      and choke coil lead wire (orange)
                                               6        4             between rib E and rib F.
          Switch
                                                   Switch


                                                                         Polyethylene tube
                 Be careful, not to pinch
                 the lead wires connected with
                 switch terminal 4 and 6, with boss A.
                                                                      Noise suppressor's
                                                                      lead wire (white)



 Wiring diagram of lower portion
 of switch
                                                Switch



                                                Noise
                                                suppressor
Wiring   diagram                                                                                       P8/8

 Wiring diagram of wires connected with brush holders                    ( Without choke coil)
    Inflect the receptacles as illustrated in Fig. B.
    The receptacle of lower brush holder has
    to be so inflected, that it does not cross the line of        .


        Fig. B            Receptacle

        Upper          Brush holder
                                Lead wire
                                (purple)
                                                             Boss A
                                                                                        Rib E
                       Brush holder
         Lower           Receptacle                                                     Rib F


                                                                      Pass noise suppressor's lead wire (white)
                                                                      and lead wire (orange) between rib E
                                                6      4
           Switch                                                     and rib F.




                 Be careful, not to pinch                       Polyethylene tube
                 the lead wires connected with
                 switch terminal 4 and 6, with boss A.




 Wiring diagram of lower portion
 of switch
                                              Switch



                                                Noise
                                                suppressor



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