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8414D-TE


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T    ECHNICAL INFORMATION
   Models No.             8414D/ 8434D/ 8444D
                                                                                                             PRODUCT
                                                                                                               P1/9
                                                                                                      L
   Description            Cordless Percussion-Driver Drills 12V/ 14.4V/ 18V

CONCEPT AND MAIN APPLICATIONS
   The above products have been developed as successor models
   of the current 8443D series models and as the highest grade                                                       H
   series models among Makita Cordless Percussion-Driver Drills.
   Their brief advantages are;
   *Powerful motor provides high operation efficiency.
   *Mechanical 3-speed;
    3rd speed: higher than the predecessors for finishing                                                     W
                light duty jobs with extremely high efficiency
                                                                                    Dimensions: mm (")
    1st speed: lower than the predecessors for extra-heavy
                                                               Model No.           8414D         8434D          8444D
               duty applications
   *Easy operation mode change                                 Length (L)                     259 (10-1/4)
   *All the great advantages as Model 8443D series models      Width (W)        94 (3-11/16) 94 (3-11/16)      95 (3-3/4)
                                                               Height (H)       243 (9-9/16) 247 (9-3/4)      252 (9-7/8)
   These new products are available in the following variations:
   8414D
                                 Battery                Battery cover
     Model No.                                           (quantity)   Charger     Flash light
                             type           Quantity
    8414DWAE       1222 (Ni-Cd 2.0Ah)           2             2
                                                                                   w/o light
    8414DWAE3      1222 (Ni-Cd 2.0Ah)           3             3
    8414DWALE      1222 (Ni-Cd 2.0Ah)           2             2                     ML120
    8414DWDE       1234 (Ni-MH 2.6Ah)           2             2
                                                                     DC1414        w/o light
    8414DWDE3      1234 (Ni-MH 2.6Ah)           3             3
    8414DWDLE      1234 (Ni-MH 2.6Ah)           2             2                     ML120
    8414DWFE 1235 (Ni-MH 3.0Ah)                 2             2
                                                                                   w/o light
    8414DWFE3 1235 (Ni-MH 3.0Ah)                3             3
   8434D
                                 Battery                Battery cover
     Model No.               type           Quantity                  Charger     Flash light
                                                         (quantity)
    8434DWAE       1422 (Ni-Cd 2.0Ah)           2             2
                                                                                   w/o light
    8434DWAE3      1422 (Ni-Cd 2.0Ah)           3             3
    8434DWALE      1422 (Ni-Cd 2.0Ah)           2             2                     ML140
    8434DWDE       1434 (Ni-MH 2.6Ah)           2             2
                                                                     DC1414        w/o light
    8434DWDE3      1434 (Ni-MH 2.6Ah)           3             3
    8434DWDLE      1434 (Ni-MH 2.6Ah)           2             2                     ML140
    8434DWFE       1435 (Ni-MH 3.0Ah)           2             2
                                                                                   w/o light
    8434DWFE3      1435 (Ni-MH 3.0Ah)           3             3

   8444D
                                 Battery                Battery cover
     Model No.         type                              (quantity)   Charger     Flash light
                                            Quantity
    8444DWAE 1822 (Ni-Cd 2.0Ah)                2              2
                                                                                   w/o light
    8444DWAE3 1822 (Ni-Cd 2.0Ah)               3              3
    8444DWALE 1822 (Ni-Cd 2.0Ah)               2              2                     ML180
    8444DWDE       1834 (Ni-MH 2.6Ah            2             2
                                                                     DC1804        w/o light
    8444DWDE3      1834 (Ni-MH 2.6Ah)           3             3
    8444DWDLE      1834 (Ni-MH 2.6Ah)           2             2                     ML180
    8444DWFE       1835 (Ni-MH 3.0Ah)           2             2
                                                                                   w/o light
    8444DWFE3      1835 (Ni-MH 3.0Ah)           3             3
                                                                                                                                P2/9
Specification
   Model No.                                                     8414D                          8434D                     8444D
              Voltage: V                                          12V                           14.4V                       18V
    Battery

                                                             2.0/ Ni-Cd                      2.0/ Ni-Cd                 2.0/ Ni-Cd
              Capacity: Ah/ Cell                             2.6/ Ni-MH                      2.6/ Ni-MH                 2.6/ Ni-MH
                                                             3.0/ Ni-MH                      3.0/ Ni-MH                 3.0/ Ni-MH
   Max. out put: W                                                210                            250                        310
                              3rd (Heighest)                    0 - 1,600                                  0 - 1,700
   No load speed:
                              2nd (High)                         0 - 550                                    0 - 600
     min.-1=rpm
                              1st (Low)                          0 - 300                                    0 - 300
                              3rd (Heighest)                   0 - 24,000                                  0 - 25,500
   Blows per minute:
                              2nd (High)                        0 - 8,250                                  0 - 9,000
       min.-1=bpm
                              1st (Low)                         0 - 4,500                                  0 - 4,500

   Fastening torque:          Hard joint                       65 (47.9)                       70 (51.6)                 80 (59.0)
        N.m (ft.lbs)          Soft joint                       31 (22.8)                       32 (23.6)                 40 (25.7)
                              Capacity: mm (")                                          1.5 -13 (1/16 - 1/2)
   Drill chuck
                              Type                                                     Keyless, Single sleeve
                              Steel                             13 (1/2)                      13 (1/2)                    13 (1/2)
   Drilling capacity:                                          45 (1-3/4)                      50 (2)                   65 (2-9/16 )
                              Wood
             mm (")
                              Concrete                          13 (1/2)                     14 (9/16)                    16 (5/8)
   Electric brake                                                                               Yes
   Torque adjustment                                                                              Yes
   Variable speed control                                                                         Yes
   Reverse switch                                                                                 Yes
   Net weight: kg (lbs)
                                                                2.4 (5.3)                      2.5 (5.5)                 2.7 (6.0)
   [includes battery]




Standard equipment
(for all variations listed in page 1)
Philips bit 2-45 .................................. 2
Grip assembly .................................. 1
Depth gauge ..................................... 1
Battery cover ..................................... For quantity, see the variation list in page 1.

Note: The standard equipment for the tool shown above may differ from country to country.


Optional          accessories
For all models                     For 8414D                               For 8434D                        For 8444D
*Assorted drill bits for           Battery 1220                            Battery 1420                     Battery 1822
 wood and steel                    Battery 1222                            Battery 1422                     Battery 1834
*Assorted driver bits              Battery 1234                            Battery 1434                     Battery 1835
                                   Battery 1235                            Battery 1435                     Battery 1835F
                                   Battery 1235A                           Battery 1435F                    Charger DC1804
                                   Battery 1235F                           Charger DC1414                   Automotive Charger DC1822
                                   Charger DC1414                          Charger DC1439
                                   Charger DC1439                          Charger DC1804
                                   Charger DC1804                          Automotive Charger DC1422
                                   Automotive Charger DC1422               Automotive Charger DC1822
                                   Automotive Charger DC1822
                                                                                                                          P3/9
Features                   and benefits


                                                        Mechanical 3-Speed                      Raised Logo of MXT
                                                     Provides high operation efficiency
                                                                                             (Metal eXtreme Technology)
              Easy Operation Mode Change             and a wide range of applications.       This easy-to-remember nickname is
                                                     (See the graph below for details.)      pad-printed, emphasizing extra-high
With merely one slide action, operation                                                      transmission durability ensured by
mode can be changed for drilling/fastening/                                                  all metal gear construction.
percussion-drilling.

Single Sleeve Keyless Chuck                                                                     Powerful Motor for High
Allows fast and easy one-hand                                                                   Operation Efficiency
bit installation.
                                                                                                Although using the same ND31
                                                                                                motor as 6347D series models,
                                                                                                higher power has been achieved
 Robust Aluminum Gear Housing                                                                   by employment of rare earth
                                                                                                magnet.

                                                                                                     Rubberized Soft Grip
                                                                                                   Provides comfortable operation
     Side Grip of New design                                                                       with better control.

  For heavy duty applications


                                             Compact Design with an Overall Length
                                                  of Only 259mm (10-1/4")
                                          5mm (3/16") smaller than the competitor A's series models.


Note: Set plate type batteries are not available.



            Mechanical 3 speed for more efficiency and a wider range of applications.
       (min.-1)
                                            8414D*                                                       *Model 8414D
                                            8434D                                                         3rd = 1,600 min-1
                   2,000                                                                                  2nd = 550 min-1
                                            8444D
                                                                                                          1st = 300 min-1
                            8443D                       3rd speed (highest speed):
Rotational speed




                            Series           1,700      Optimum for faster drilling in light duty applications
                   1,500
                            1,400

                   1,000

                                                        2nd speed (high speed):
                                              600        Optimum for more efficient drilling in heavy duty applications
                    500
                                                        1st speed (low speed)
                             450                         For heavy duty applications; for example, able to drill through holes in
                                              300
                                                        38mm thick SPF with 3" Selfeed bit while impossible with the rival
                                                        model of the competitor A and Makita 6347D.
                       0
                                                                                                                P4/9
Comparison          of products
[1] Specification Comparison
1) Main Specifications
                             Model No.                    Makita                               A                   B
        Specifications                         8414D                8413D                                         B1
                         Capacity: Ah         2.6/ 3.0              2.6/ 3.0                                      2.4
        Battery
                         Cell                 Ni-MH                 Ni-MH                                        Ni-Cd
                         3rd                  0- 1,600
        No load speed:
                       2nd/ High              0- 550               0- 1,300                                    0 - 1,700
        min.-1=rpm
                       1st/ Low               0- 300                0- 400                                      0 - 500
                       3rd                   0- 24,000
        No load speed:
                       2nd/ High              0- 8,250             0- 19,500                                   0 - 21,000
        min.-1=rpm
                       1st/ Low               0- 4,500             0- 6,000                                    0 - 6,000
        Locking torque (USA): in.lbs            400                   320                                        N/A
12V




        Max fastening    Hard joint             65                    35                                          60
        torque: N.m      Soft joint             31                    18                                          22
                         Capacity: mm (")     13 (1/2)             13 (1/2)                                    13 (1/2)
        Keyless chuck
                         Sleeve type           Single               Single                                      Single
                              Steel           13 (1/2)             13 (1/2)                                    13 (1/2)
        Drilling capacity:    Wood           45 (1-3/4)        30 (1-3/16)                                    30 (1-3/16)
                   mm (")
                              Concrete        13 (1/2)             13 (1/2)                                     10 (3/8)
                             Length         259 (10-1/4)       267 (10-1/2)                                   272 (10-3/4)
        Dimensions: mm (") Width            94 (3-11/16)       94 (3-11/16)                                        --
                             Height         243 (9-9/16)       240 (9-1/2)                                    260 (10-1/4)
        Net weight: kg (lbs) Catalog          2.4 (5.3)         2.3 (5.1)                                      2.4 (5.3)
        [includes battery]   Measured        2.43 (5.4)            2.31 (5.1)                                  2.31 (5.1)

                             Model No.                    Makita                                A                  B
        Specifications                        8434D                 8433D           A1                  A2        B2
                         Capacity: Ah         2.6/ 3.0              2.6/ 3.0                (1.7)                 2.4
        Battery
                         Cell                 Ni-MH                 Ni-MH                  Ni-Cd                 Ni-Cd
                         3rd                 0 - 1,700                                    0 - 1,800
        No load speed:
        min.-1=rpm      2nd/ High             0 - 600              0 - 1,300              0 - 1,400            0 - 1,700
                        1st/ Low              0 - 300               0 - 400                   0 - 450           0 - 500
                        3rd                  0- 25,500                                   0- 30,600
        No load speed:
                        2nd/ High             0- 9,000             0- 19,500             0- 23,800             0 - 21,000
        min.-1=rpm
                        1st/ Low              0- 4,500             0- 6,000               0- 7,650             0 - 6,000
        Locking torque (USA): in.lbs            450                   358                      400               N/A
14.4V




        Max fastening    Hard joint             70                    40                       (63)               65
        torque: N.m      Soft joint             32                    21                       (28)               24
                         Capacity: mm (")     13 (1/2)             13 (1/2)               13 (1/2)             13 (1/2)
        Keyless chuck
                         Sleeve type           Single               Single                 Single               Single
                              Steel           13 (1/2)             13 (1/2)               13 (1/2)             13 (1/2)
        Drilling capacity:    Wood             50 (2)          36 (1-7/16)               44 (1-3/4)           32 (1-1/4)
                   mm (")
                              Concrete       14 (9/16)          14 (9/16)                  6 (1/4)            12 (15/32)
                             Length         259 (10-1/4)       267 (10-1/2)     264 (10-3/8)                  272 (10-3/4)
        Dimensions: mm (") Width            94 (3-11/16)       94 (3-11/16)        76 (3)               N/A        --
                             Height         247 (9-3/4)        244 (9-5/8)      241 (9-1/2)                   260 (10-1/4)
        Net weight: kg (lbs) Catalog         2.5 (5.5)          2.4 (5.3)                2.4 (5.3)             2.5 (5.5)
        [includes battery]   Measured        2.50 (5.5)            2.43 (5.3)    2.47 (5.4)             N/A    2.7 (6.0)
                                                                                                                            P5/9

Comparison                    of products

[1] Specification Comparison (cont.)

 1) Main Specifications
                                        Model No.                     Makita                                A                  B
                   Specifications                          8444D                8443D           A3                  A4        B3
                                    Capacity: Ah           2.6/ 3.0             2.6/ 3.0                (2.4)                 2.0
                   Battery
                                    Cell                   Ni-MH                Ni-MH                  Ni-Cd                 Ni-Cd
                                    3rd                   0 - 1,700                                   0 - 2,000
                   No load speed:
                   min.-1=rpm      2nd/ High              0 - 600              0 - 1,400              0 - 1,450             0 - 1,800
                                   1st/ Low               0 - 300               0 - 450                   0 - 450            0 - 500
                                   3rd                   0- 25,500                                   0- 34,000
                   No load speed:
                                   2nd/ High              0- 9,000             0- 21,600             0- 24,650             0 - 21,000
                   min.-1=rpm
                                   1st/ Low               0- 4,500             0- 6,750               0- 7,650              0 - 6,000
                   Locking torque (USA): in.lbs             560                   404                      450                N/A
 18V




                   Max fastening    Hard joint               80                   50                       (76)                70
                   torque: N.m      Soft joint               40                   25                       (33)                28
                                    Capacity: mm (")      13 (1/2)              13 (1/2)              13 (1/2)               13 (1/2)
                   Keyless chuck
                                    Sleeve type            Single                Single                Single                 Single
                                         Steel            13 (1/2)              13 (1/2)              13 (1/2)               13 (1/2)
                   Drilling capacity:    Wood              65 (2)              38 (1-1/2)              50 (2)               35 (1-3/8)
                              mm (")
                                         Concrete         16 (5/8)              16 (5/8)               6 (1/4)              14 (9/16)
                                        Length          259 (10-1/4)       267 (10-1/2)     264 (10-3/8)                  272 (10-3/4)
                   Dimensions: mm (") Width              95 (3-3/4)         95 (3-3/4)       90 (3-1/2)             N/A        --
                                        Height          252 (9-7/8)       249 (9-13/16)     241 (9-1/2)                   260 (10-1/4)
                   Net weight: kg (lbs) Catalog          2.7 (6.0)          2.6 (5.7)                2.7 (5.9)              2.6 (5.7)
                   [includes battery]   Measured         2.76 (6.1)            2.68 (5.8)    2.75 (6.1)             N/A     2.95 (6.5)


 2) Other Specifications
                   12V models                              8414D                8413D                                           B1
                   14.4V models                            8434D                8433D           A1                  A2          B2
 12V/ 14.4V/ 18V




                   18V models                              8444D                8443D           A3                  A4          B3
                   Metal gear housing                       Yes                  Yes                       Yes                 Yes
                   Externally accessible brush              Yes                  Yes                       No                  Yes
                   Side grip                                Yes                  Yes                       Yes             Yes (option)
                   Soft grip                                Yes                   No                       Yes                 Yes
                   Holders for storing bit                   2               2                          1                       1
                   Torque adjustment                   16stages+ drill 16stages+ drill            22stages+ drill         15stages+ drill
                                                                                                                   P6/9
Comparison       of product
[2] Performance Comparison
We carried out masonry drilling test on the new products and the competitions, and compared work speed and volume.
Test Conditions: Drilled holes in brick with dia. 8mm (5/16") TCT drill bit.
Note: 1. With 2.6Ah Ni-MH battery, Makita models were tested.
      2. The test results depend to a great extent on the hardness of materials, etc.
      3. The numbers in the bar graphs are relative values when the capacity of the predecessor model
         (8414D/8433D/8443D) is indexed at 100.
      4. The 3rd speed of the new models is designed for faster drilling/fastening with rotational speed higher
         than that of the predecessor models. Therefore, in some applications, the energy consumption may
         get higher, resulting in work volume smaller than the predecessor models.


  12V 8414D                           [Work speed]                                     [Work Volume]
                             (the time required to drill a hole)               (on a single full battery charge)
                                  Slow                 Fast                        Few                  Many

 Makita 8414D                            115             10.5 sec.                       80     38 holes
      (3rd speed)
 Competitor B Mod. B1                    115                                             80
        (High speed)
 Makita 8413D                            100                                             100
      (High speed)

                        0           50           100               150     0        50            100              150



  14.4V 8434D
                                  Slow                 Fast                        Few                  Many

 Makita 8434D                                            150                              100
      (3rd speed)                                                                                     65 holes

 Competitor A Mod. A1
                                                               7.9 sec.
        (3rd speed)                        105                                      60

 Competitor B Mod. B2
        (High speed)                      135                                       70

 Makita 8433D                              100                                            100
      (High speed)

                        0           50           100               150     0        50            100              150



  18V 8444D
                                  Slow                 Fast                        Few                  Many

 Makita 8444D                                            145       5.3                    120
      (3rd speed)                                                   sec.                                   114 holes

 Competitor A Mod. A3
        (3rd speed)                                      150                              115

 Competitor B Mod. B3
        (High speed)                                     145                               95

 Makita 8443D                              100                                            100
      (High speed)

                        0           50           100               150     0        50            100              150
                                                                                                                     P7/9
Repair
 [1] DISASSEMBLY/ ASSEMBLY
 [1] -1. Drill Chuck
  REMOVAL
 When replacing Gear assembly, remove Drill chuck first as described below.
 (When replacing only Housing, you need not remove Drill chuck.)
 1) After opening the chuck jaws to the full, remove the chuck screw (M6x22 (-) Flat head screw) by turning it clockwise.
    Use impact driver drill if it is difficult to remove the screw.
 2) Slide Speed change lever to the position of "1" (1st speed), and slide Action mode change lever to the drill mode
    as illustrated in Fig. 1.
    Secure the short arm of a hex wrench with the chuck jaws. Hold the machine firmly, and then remove Drill chuck
    by hitting the long arm of the hex wrench using plastic hammer to turn Drill chuck counterclockwise. (Fig. 2)
 Fig. 1                                                             Fig. 2


                           Action mode                                                                            Hex wrench
                           change lever




                     Speed change lever




 Note:                                                                           Fig. 3
 This product has "Spindle Lock system".
 After hex wrench is secured in Drill chuck, it is impossible to turn the wrench   [WRONG]
 in order to adjust the position of its long arm. (Fig. 3)
 Therefore, make sure that the hex wrench is positioned as illustrated in Fig. 2
 before securing it in drill chuck.




 Caution:
 Place the tool on a work table so that Drill chuck touches the surface of the work table as illustrated to left in Fig. 4.
 Failure to follow this instruction can result in deformation of Spindle.
 Fig. 4

      [CORRECT]                                                      [WRONG]
                                                                       Spindle can be deformed by the shock to
                                           Drill chuck                 hex wrench.




     Work table                                  Hex wrench
                                                                                                                P8/9
Repair
 [1] -1. Drill Chuck (cont.)
  INSTALLATION
 1) Make sure that Flat washer 13 is mounted to Spindle before installing Drill chuck. (Fig. 5)
 2) Slide Speed change lever to the position of "1" (1st speed), and slide Action mode change lever to the drill mode as
    illustrated in Fig. 1. Push in F/R change lever for the forward rotation mode. (Fig. 6)
    Secure the short arm of a hex wrench in the chuck jaws, and the long arm in vise. Hold the grip of the machine firmly
    so that your hand cannot be pulled away by reaction torque. And then tighten Spindle into Drill chuck by pulling the
    trigger of Switch until Spindle is locked. (Fig. 6)
    Note: Release the trigger of Switch just after Spindle is locked. Do not keep on pulling the trigger for longer than
            one second.

 3) Fasten Drill chuck to Spindle with the chuck screw (M6x22 (-) Flat head screw) by turning it counterclockwise.
    If you reuse a screw removed from Drill chuck, apply an appropriate amount of adhesive (ThreeBond 1321B/ 1342 or
    Loctite 242) to the screw for secure fastening.

 Fig. 5                                           Fig. 6

                                                                                                           Hex wrench




                               Flat washer 13
                                                      Push in R/F
                                                      change lever
                                                      for the forward
                                                      rotation mode.




 [1] -2. Installing Speed Change Lever
 1) Before installing Speed change lever on Gear assembly, make sure that;
    a. Two Leaf springs are installed to Speed change lever as illustrated to left in Fig. 7.
    b. Two compression springs are installed to speed change lever as illustrated to right in Fig. 7.
 2) Assemble Speed change lever to the projection on Gear assembly. (Fig. 8)

 Fig. 7                                                          Fig. 8


                                                                                                         Change lever
          Leaf spring




                                                                                                        Projection for
      Change lever                                                                                      speed change lever
                                                                                                        installation
                                 Compression spring
                                                                  Gear assembly
                                                                                         P9/9
Circuit   diagram
Color index of lead wires' sheath
 Black
 Red



                                       Endbell complete




                                                                            Receptacle



                                       Switch



                                       Holder

                                Spring terminal



Wiring     diagram


                                                   Route lead wires
                                                   between rib B
                                                   and the inside wall
                                                   of Housing.

                                                  Rib B




                                                                    Rib A
     Route the connect lead wires
     (red and black) of endbell complete                                    Boss A
     between rib A and boss A.
     Do not put the lead wire (red)
     on the boss A.



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