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Makita BDF448 manual

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Table of contents for the manual

  • Page 1

    P 1/ 1 2 C ONCEPT AND MAIN APPLICA TIONS S pecification Model No. BDF448 Description 14.4V Cordless Driver Drill S tandard equipment O ptional accessories Note: The standard equipment for the tool shown above may vary by country . Fast charger DC18RA (for US, Canada, Guam, Panama, Mexico and Colombia) Fast charger DC18RC (for all countries except t[...]

  • Page 2

    [3] DISASSEMBL Y/ASSEMBL Y [3] -1. Drill Chuck CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”. DISASSEMBLING Fig. 1 M6x22 Flat head screw (Left handed thread) (1) Remove M6x22 Flat head screw as drawn in Fig. 1 . (2) Preset the machine as drawn in Fig. 2 . And set Hex wrench 10 to V ise as drawn[...]

  • Page 3

    [3] DISASSEMBL Y/ASSEMBL Y [3] -1. Drill Chuck (cont.) P 3 / 1 2 R epair ASSEMBLING Fig. 5 End of the threaded portion of Spindle Drill chuck Fig. 6 Attach Battery . F/R change lever Set F/R Change lever to Forward (clockwise) rotation. Set Speed change lever to Low speed mode designated with 1. Speed change lever Set Change ring to Drill mode. Cha[...]

  • Page 4

    P 4 / 1 2 R epair [3] DISASSEMBL Y/ASSEMBL Y [3] -2. Gear Assembly , Motor Section DISASSEMBLING Fig. 8 1. Remove two 3x16 T apping screws and Rear cover . And remove four 4x18 T apping screws. After removing Drill chuck (Re: Figs. 1 , 2 , 3 and 4) , disassemble Motor section and Gear assembly. (Figs. 8 and 9 ) 2. Remove Housing R, unscrewing seven[...]

  • Page 5

    P 5 / 1 2 R epair [3] DISASSEMBL Y/ASSEMBL Y [3] -2. Gear Assembly , Motor Section (cont.) ASSEMBLING Fig. 10 (1) Assemble Motor section taking the reverse step of Disassembling. Refer to Fig. 9 . Insert Armature into Yoke unit as drawn in Fig. 10 . (2) Assemble Brush holder complete to Commutator end of Armature. Refer to the drawings in Fig. 9 . [...]

  • Page 6

    P 6 / 1 2 R epair [3] DISASSEMBL Y/ASSEMBL Y [3] -2. Gear Assembly , Motor Section ASSEMBLING Fig. 12 Fig. 13 (5) Assemble Speed change lever assembly as drawn in Fig. 12 . (6) Assemble Motor section and Gear assembly as illustrated in Figs. 13 and 14 . If the Motor section does not fit to Housing L, make sure that Y oke unit is correctly amounted [...]

  • Page 7

    P 7 / 1 2 R epair [3] DISASSEMBL Y/ASSEMBL Y [3] -2. Gear Assembly , Motor Section (cont.) ASSEMBLING Fig. 14 Y oke unit Attach the edge of Y oke unit to the rib of Housing L. rib of Housing L Brush holder complete Gap arises between Housing R and L when Gear assembly is fastened to Housing R and L. Holding Housing R and L with Water pump pliers at[...]

  • Page 8

    P 8 / 1 2 R epair [3] DISASSEMBL Y/ASSEMBL Y [3] -3. F/R Change Lever [3] -5. Parts related to Drip-pr oof structure ASSEMBLING Fig. 17 Assemble Sponge B to Housing L. And assemble Seal and Sponge A to Housing L as drawn in Fig. 17 . Assemble Sponge B to Housing R to the portion designated with gray color . Sponge B Sponge A Note: T o assure Drop-p[...]

  • Page 9

    P 9 / 1 2 C ircuit diagram W iring diagram Fig. D-1 Fig. D-2 Color index of lead wires' sheath Black Red Blue Y ellow Brush holder complete Circuit with Battery fuel gauge available for the countries other than North American countries FET LED Light circuit Switch Red Lead wire is used for some countries instead of white. T erminal LED W ire c[...]

  • Page 10

    P 1 0 / 1 2 W iring diagram FET FET W iring to Switch Connect the Lead wires to Switch, tilting their Connectors to 45 degrees as drawn below . W iring in Housing L Fix the FET Lead wires as follows: yellow with Lead wire holder nearest to Switch trigger blue with the center Lead wire holder black with Lead wire holder farthest from Switch trigger [...]

  • Page 11

    P 1 1 / 1 2 C ircuit diagram W iring diagram Color index of lead wires' sheath Black Red Blue Y ellow White Circuit without Battery fuel gauge available exclusively for North American countries Brush holder complete FET LED Switch T erminal Fig. D-2A Fig. D-1A LED W ire connecting portion Fix the LED lead wires with Lead wire holders drawn bel[...]

  • Page 12

    P 1 2 / 1 2 W iring diagram W iring to Switch Connect Lead wires to Switch, tilting their Connectors to 45 degrees as dran below . FET Fix FET Lead wires as follows: yellow with Lead wire holder nearest to Switch trigger blue with the center Lead wire holder black with Lead wire holder farthest from Switch trigger Lead wire holder yellow blue black[...]