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R

epair

P 8 / 18

< 6 > Disassembling armature
         1. Disassemble handle cover by unscrewing tapping screw 4 x 25. And disassemble carbon brushes 
             as illustrated in Fig. 4.
          2. Separate gear housing together with armature, from motor housing by unscrewing tapping screws 4 x 45 
              as illustrated in Fig. 4A.
          3. Slightly hitting the edge of gear housing with plastic hammer, remove armature from inner housing assembled in 
              gear housing. See Fig. 4B.
          4. Ball bearings of fan side and commutator side can be disassembled with No.1R269 "Bearing extractor (small)".
              See Fig. 4C.

Fig. 4

Fig. 4A

Fig. 4C

Fig. 4B

Carbon brush

Carbon brush

Handle
 cover

Tapping s
crew 4 x 25 : 3 pcs.

Tapping s
crew 4 x 45 : 4 pcs.

Brush holder

Brush holder

Gear housing

Motor housing

Gear housing

Inner housing

Plastic hammer

No.1R269 "Bearing extractor (small)"

Ball bearing

Armature

< 7> Disassembling tool holder section
         1. Disassemble change lever from gear housing as mentioned in < 4 > Disassembling change lever at page 7. 
         2. Separate gear housing from motor housing as illustrated in Fig. 4 and Fig. 4A.  And disassemble armature as
             illustrated in Fig. 4B.
         3. Disassemble inner housing from gear housing as illustrated in Fig. 5.
         4. Separate tool holder section from inner housing as illustrated in Fig. 5A.  Pay attention, not to lose flat washer 28,
             when separating tool holder section.

Fig. 4B

Inner housing

Plastic hammer

Fig. 5

Inner housing

Plastic hammer

Tool holder section

Inner housing

Tool holder section

Flat washer 28

Fig. 5A

Piston cylinder

Swash bearing section

Swash bearing section

Summary of Contents for HR2450F

Page 1: ...pe of bit shank Drilling capacity mm Steel Wood Concrete TCT hammer bit Core bit Dry Diamond core Single blow energy J Working mode Variable switch Reverse switch Clutch for protecting user from lock...

Page 2: ...alm fitting soft grip Change lever for 3 mode settings Rotation only Rotation Percussion Percussion only Lock button on change lever for firmly holding the position of selected mode In line and ergono...

Page 3: ...8 13 1 2 32 1 1 4 360 14 1 8 72 2 13 16 212 8 2 4 5 3 SDS plus Yes Yes Yes Yes Yes No No No 9 101 101 by double insulation HR2450 HR2450F A 780 2 7 4 0 13 1 2 Modes R R P 0 1 100 0 4 500 24 15 16 54 2...

Page 4: ...meter 6 5mm Competitor A Model A Competitor A Model A MAKITA HR2400 MAKITA HR2440 MAKITA HR2450F Bit diameter 8 5mm Comparison in drilling 0 50 100 100 100 110 110 100 150 MAKITA HR2400 MAKITA HR2440...

Page 5: ...cylinder The portion where contacts inner housing Inner portion where contacts striker The portion where piston joint is assembled Inner portion where contacts tool holder The groove where O ring 68...

Page 6: ...assemble cap 35 by turning See Fig 1 Chuck cover Ring 21 3 Take off steel ball 7 0 with which guide washer and conical compression spring 21 29 are held See Fig 1A Then guide washer and conical compr...

Page 7: ...to the original position of change lever by pressing to gear housing side 4 Disassembling change lever 1 Separate cap from change lever See Fig 1 2 Fully turn change lever in the direction of drill mo...

Page 8: ...5 4 pcs Brush holder Brush holder Gear housing Motor housing Gear housing Inner housing Plastic hammer No 1R269 Bearing extractor small Ball bearing Armature 7 Disassembling tool holder section 1 Disa...

Page 9: ...g 31 Washer 30 Round bars for arbor Ring spring 28 Retaining ring plier Retaining ring plier No 1R306 Ring spring extractor 8 Assembling tool holder section 1 Apply grease to spur gear 51 and tool hol...

Page 10: ...ring 28 showing its cut portion Ring spring Push the cut portion to the out side of the hole Push out ring spring 28 from the inner groove O ring case O ring case Fig 6 Fig 6A Inner housing side Inner...

Page 11: ...6C Fig 6D Ring spring 28 Fig 6E O ring case equipped with O ring 9 O ring 15 Ring 9 Impact bolt equipped with O ring 12 10 Assembling impact bolt 1 Apply grease to the O rings referring to 1 Lubricat...

Page 12: ...earing section Swash bearing section Fat washer 5 Compression spring 6 Stop ring E 4 Pin of inner housing Piston cylinder 3 Disassemble stop ring E 4 flat washer 5 and compression spring 6 with which...

Page 13: ...ball bearing 608ZZ with bearing extractor as illustrated in Fig 9A 3 Disassemble flat washer 8 and bearing retainer as illustrated in Fig 9B 4 Disassemble helical gear 26 by pressing with arbor press...

Page 14: ...all bearing 608ZZ Bearing retainer Ring 8 1 Apply MAKITA grease to piston cylinder and swash bearing 10 referring to 1 Lubrication at page 5 2 Assemble 2 pcs of flat washers 12 and piston joint to pis...

Page 15: ...shaft as illustrated in Fig 11E 8 Assemble compression spring 7 to cam shaft and fix the parts on cam shaft with retaining ring S 7 as illustrated in Fig 11F 9 Assemble compression spring 6 and flat w...

Page 16: ...ssor power supply cord etc can be replaced No 1R165 Ring spring setting tool B Needle bearing complete Gear housing Note in assembling Pay attention to the assembling position of needle bearing comple...

Page 17: ...See through 1 2 3 4 1 2 C1 C2 M1 M2 Switch Field Noise suppressor Power supply cord Brush holder Brush holder Connected to field ore For some countries noise suppressor of two lead wire type is used o...

Page 18: ...s lead wire blue between brush holder and lead holder Fix field brush holder s lead wire blue and field lead wire black with lead holder as per the illustration Fix lead wires which are passed throug...

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