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[3] DISASSEMBLY/ASSEMBLY
[3]-1. Hammer case complete (cont.)

DISASSEMBLING

Pull off Armature while holding Internal gear cover complete and Hammer case complete by hand
so that they do not separate out. 

Hammer case complete

Internal gear cover complete

Hammer case 
complete

Remove Hammer case complete from Internal gear cover complete, and then disassemble the
components as illustrated below.

Flat washer 19 
(This washer is left in Hammer case complete 
  due to grease.)

Anvil

Hammer section

Remove Flat washer 8, and then
pull off Pin 6.
Spur gear 32 can be removed
from Hammer section.

Internal gear 71

O ring 58

Internal gear 
cover complete

(2) Disassemble Hammer case section as illustrated in Figs 3 and 4.

Flat washer 18

Pin 6 (2pcs.)

Spur gear 32
(2pcs.)

Figs 3

Figs 4

Summary of Contents for tw0250

Page 1: ...ets Extension bar Universal joint Oval socket Bit adapter Socket bit Phillips bits Dimensions mm Width W Height H Length L 250 9 7 8 72 2 13 16 220 8 5 8 Continuous Rating W Voltage V Cycle Hz Input Output Max Output W 110 4 8 50 60 500 365 Current A 250 L H W No load speed min 1 rpm Impacts per min min 1 ipm Max fastening torque N m ft lbs Rotation reversing facility Net weight kg lbs 0 2 300 0 2...

Page 2: ...rom unusual abrasion Portion to lubricate Amount a little DISASSEMBLING Cup washer 5 4pcs Internal gear cover complete Carbon brush Urethane ring 5 4pcs M5x50 Hex socket head bolt 4pcs Hammer case complete Steel ball 3 5 31pcs Anvil Spindle Hammer Steel ball 6 4 2pcs Spur gear 32 2pcs Contact face of Hammer case complete and Anvil A Contact face of Anvil and Spindle B 4 4g Impact area of Anvil and...

Page 3: ...move Hammer case complete from Internal gear cover complete and then disassemble the components as illustrated below Flat washer 19 This washer is left in Hammer case complete due to grease Anvil Hammer section Remove Flat washer 8 and then pull off Pin 6 Spur gear 32 can be removed from Hammer section Internal gear 71 O ring 58 Internal gear cover complete 2 Disassemble Hammer case section as ill...

Page 4: ...le Hammer case section by reversing the disassembling step Refer to Figs 4 and 3 3 Assemble Hammer case section to Motor housing as illustrated in Fig 6 1 Internal gear 71 can be assembled to Internal gear cover complete as illustrated in Fig 5 Fig 5 Fig 6 Protrusion of Hammer case complete Protrusion of Internal gear cover complete Groove of Handle cover 1 Align the protrusion of Hammer case comp...

Page 5: ...trated in Fig F when releasing Hammer section from Gear extractor Failure to follow this instruction could cause Steel balls to drop out of hammer Fig R Fig F 1 Press down Hammer using 1R045 to align the opening for Steel ball 6 4 insertion with the top of cam grooving on Spindle And then remove Steel ball 6 4 from Spindle Hammer Spindle Top of Cam groove on Spindle Opening for Steel ball insertio...

Page 6: ...g 30 Cup washer 19 Steel balls and Flat washer 12 can be removed from Hammer as illustrated in Fig 11 Flat washer 32 Steel ball 3 5 31pcs After removing Flat washer 32 Steel balls 3 5 can be removed from Hammer Fig 12 Place for one steel ball has to be reserved in Hammer when twenty four Steel balls are put in 1 Make sure that thirty one Steel balls are put in the Hammer as illustrated in Fig 12 2...

Page 7: ...ing 4x18 Tapping screws F R Change lever comes with Handle cover ASSEMBLING 1 Separate Hammer case section and armature from Motor housing as illustrated in Fig 2 2 Baffle plate can be removed as illustrated in Fig 13 Handle cover Baffle plate Slide Baffle plate to Handle cover and pull it up Fig 13 Fig 14 Fig 15 3 5 F R Change lever Handle cover F R Change lever Push F R change lever to left or r...

Page 8: ...f PC to the top assemble F R Change lever Otherwise Reverse switch can not be controlled by F R Change lever Mark of PC Pin Switch in Motor housing F R Change lever After assembling F R Change lever to Handle cover mount the Handle cover to Motor housing Refer to Fig S Fitting the grooved portion to the pin of Switch assemble Handle cover to Motor housing F R Change lever Fig S Fig 16 ...

Page 9: ...to Brush holder A on Name plate TW0250 side Name plate TW0250 side Noise suppressor if used Power supply cord Sponge White Color index of lead wires sheath Black Brush holder A Brown Lead wire is used for some countries Blue Lead wire is used for some countries Brush holder B Field 1 2 M2 C1 1 C2 2 3 4 M1 Switch Red Orange Blue Purple P 9 10 ...

Page 10: ... Sponge TW0250 Name plate side Viewed from Hammer case side Makita logo side Switch Assemble Field to Motor housing while facing its Lead wire orange to Switch side in order to connect orange lead wire to Brush holder of Makita logo side exactly Field lead wire orange Field lead wire purple Motor housing When assembling Field to Motor housing the Spring terminal of orange lead wire has to be conne...

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