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Makita BHR242 Technical Information

Other manuals for BHR242: Instruction Manual
Manual is about: Cordless Combination Hammer

Summary of BHR242

  • Page 1

    Models no. Description product t echnical information c oncept and main applications s pecification s tandard equipment o ptional accessories p 1/25 bhr242 , bhr243 cordless combination hammer 24mm (15/16") dimensions: mm (") width (w) height (h) length (l) 328(12-7/8) 353(13-7/8) 85 (3-3/8) 213 (8-...

  • Page 2

    [1] necessary repairing tools description code no. Use for retaining ring pliers st-2n 1r003 removing ring spring 19 from tool holder complete/ tool holder guide complete retaining ring pliers st-2 1r004 assembling cam shaft bearing setting plate 15.2 1r035 removing / assembling spiro lock washer 30...

  • Page 3

    [2] lubrication apply the following grease to protect parts and product from unusual abrasion. Fig. 1 item no. Description portion to lubricate lubricant see fig. 3. Amount 3g a little a little a little 3g compression spring 14 end to be fixed to the boss in inner housing complete (see fig. 3.) maki...

  • Page 4

    Put 16g makita grease rb no 00 by using the space (designated by the black dot) to lubricate swash bearing section and cam shaft section. Boss for fixing compression spring 14 inside view of inner housing fig. 2 fig. 3 bhr242 bhr243 item no. Description portion to lubricate lubricant amount a little...

  • Page 5

    [3] disassembly/assembly [3] -1a. Bit holder section for bhr242 disassembling for bhr242 r epair p 5/ 25 chuck cover chuck cover chuck cover cap 35 groove of tool holder complete tool holder complete (1) remove cap 35. (2) separate ring spring 14 from the groove of tool holder complete using 1r003 w...

  • Page 6

    [3] disassembly/assembly [3] -1b. Holder section for bhr243 disassembling r epair p 6/ 25 (1) remove tool holder set from tool holder guide complete. (fig. 8) (2) remove cap 35, then separate ring spring 19 from the groove of tool holder using 1r003 with 1r212. (fig. 9) (3) remove chuck cover, then ...

  • Page 7

    P 7/ 25 [3] disassembly/assembly [3]-1b. Holder section for bhr243 (cont.) assembling r epair (1) assemble torsion spring 31 to tool holder as follows: • set two steel balls 6 on the holes of tool holder. • insert the short arm of torsion spring 31 into the hole of tool holder. Note: apply makita gr...

  • Page 8

    P 8/ 25 [3] disassembly/assembly [3]-2. Drill chuck assembly for bhr243 r epair disassembling fig. 18 fig. 19 fig. 22 fig. 21 fig. 20 steel ball 5.0 leaf spring flat washer 24 drill chuck assembly can be disassembled as drawn in figs. 18 to 22. Change cover change ring after removing ring spring 21,...

  • Page 9

    Change cover change ring assembling chuck holder short arm of torsion spring 31 long arm of torsion spring 31 hole for torsion spring 31 (1) holding the flat portions of chuck holder in vise, assemble drill chuck to chuck holder by turning it clockwise using hex wrench 10. (2) secure drill chuck wit...

  • Page 10

    [3] disassembly/assembly [3]-3. Change lever (1) remove dust and dirt from change lever and the grooved area on motor housing. (2) set change lever to hammer mode. (fig. 27) note: if it is hard to set change lever to hammer mode because of getting stuck in the halfway, turn the bit holder section / ...

  • Page 11

    [3] disassembly/assembly [3]-4. Rotor (1) loosen four 4x35 tapping screws, and then remove battery housing r and housing r in order from their housings l. (fig. 31) (2) remove gear housing section as drawn in fig. 32. Inner housing in gear housing section comes with rotor. (3) loosen two m4x12 hex s...

  • Page 12

    Fig. 35 [3] disassembly/assembly [3]-5. Torsion spring 6 for connector, battery housing assembling r epair p 12/ 25 a b c cushion rubber (r) cushion rubber (l) (behind terminal) rubber pin 5 pin 1.5 see fig. 35. Set torsion spring 6 into housing l, and then assemble connector to compression spring 6...

  • Page 13

    [3] disassembly/assembly [3]-6. Torque limiter section disassembling assembling r epair p 13/ 25 (1) disassemble tool holder section. (figs. 4 to 6 for bhr242/ figs. 8 to 13 for bhr243.) (2) disassemble change lever. (figs. 27 to 29) (3) remove gear housing section from motor housing, and then remov...

  • Page 14

    [3] disassembly/assembly [3]-6. Impact bolt in torque limiter section r epair p 14/ 25 disassembling (1) put 1r388 into tool holder (guide) complete, then push 1r388 in vise with the access holes on tool holder (guide) complete parallel to vise. (fig. 42) o-ring case b is moved toward the top of too...

  • Page 15

    [3] disassembly/assembly [3]-6. Impact bolt in torque limiter section (cont.) r epair p 15/ 25 assembling note: 2 fig. 44a fig. 44b impact bolt a (1) assemble impact bolt section to tool holder (guide) complete as drawn in fig. 44a/ 44b. Impact bolt section in tool holder complete for bhr242 impact ...

  • Page 16

    P 16/ 25 r epair disassembling fig. 47 fig. 49 fig. 48 fig. 50 fig. 51 (1) disassemble motor housing section, gear housing section and inner housing section. (2) remove flat fillister hd pin 6, two weight holder guides, flat washer 6, stop ring e-5, inner support complete and two m4x25 hex socket he...

  • Page 17

    P 17/ 25 r epair disassembling assembling fig. 52 fig. 53 (6) remove stop ring ext u-6 from can shaft, then separate flat washer 7, spur gear 10 and clutch cam a from can shaft. (7) receive spiral bevel gear 32 on 1r139 put on u-groove of arbor press table and press out cam shaft with 1r281 (ø7mm ro...

  • Page 18

    P 18/ 25 r epair assembling fig. 55 (5) set compression spring 14 and flat washer 14 to the projection of inner housing as drawn in fig. 55. Insert guide plate and piston joint into piston cylinder, and then pass the pole of swash bearing 10 through piston joint. (fig. 56) (6) assemble inner support...

  • Page 19

    1r258 p 19/ 25 r epair [3] disassembly/assembly [3]-8. Oil seal 25, cup sleeve, ball bearing 6806llu fig. 60 ball bearing 6806llu cup sleeve fig. 61 fig. 62 1r258 fig. 63 fig. 64 (1) assemble inner housing complete to gear housing complete. (2) put inner housing complete on u-groove table portion of...

  • Page 20

    P 20/ 25 r epair [3] disassembly/assembly [3]-9. Motor of dust extraction system dx01, dx02 fig. 65 fig. 66 note: special repairing tool and lubricant are not required. (1) separate housing r and eight 4x18 tapping screws from housing l. (2) remove baffle plate, filter plate, sponge sheet c and moto...

  • Page 21

    P 21/ 25 r epair [3] disassembly/assembly [3]-10. Slide levers of dust extraction system dx01, dx02 fig. 67 fig. 68 • slide lever b on housing l remove rack b and compression spring 3 in housing l as drawn in fig. 67, and then move slide lever b toward the upper direction like the arrow mark. (fig. ...

  • Page 22

    P 22/ 25 r epair [3] disassembly/assembly [3]-11. Tips on repair of dust extraction system dx01, dx02 fig. 69 fig. 70 • hose 30 is not glued on the other parts, and therefore it is possible to remove hose 30 from collector base a (dx01)/ b (dx02) and inner pipe. (fig. 69) when it is difficult to rem...

  • Page 23

    P 23/ 25 c ircuit diagram fig. D-1 fig. D-2 terminal switch bhr242, bhr243 dx01, dx02 stator controller orange mark white mark black mark connector to dust extraction system (dx01, dx02) connector to bhr242 and bhr243 black orange blue brown white red yellow color index of lead wire’s sheath control...

  • Page 24

    P 24/ 25 bhr242, bhr243 lead wires to connector have to be routed between rib b and rib d. Lead wires to connector and stator lead wires have to be routed between rib a and rib b. Route the lead wires between connector and controller to the bottom of housing l so as not to rise on the top line of ri...

  • Page 25

    P 25/ 25 w iring diagram (cont.) fig. D-4 dx01, dx02 red mark black lead wire connector viewed from lead wire installation side lead wires between connector and controller have to fixed with these lead wire holders. Do not slack them between the lead wire holders. Connector red lead wire white lead ...