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P 3 / 8

R

epair

[3] DISASSEMBLY/ASSEMBLY
[3] -1. Disassembling/Assembling Hammering Mechanism

Fig. 3

1) Remove Belt clip by unscrewing Screw M4x12.

    Remove Bumper and Hammer case cover by hand,

    Remove Rear cover by unscrewing two PT3x16

    Tapping screws. (

Fig. 2

)

2) Disconnect Carbon brush from Commutator

    as illustrated in 

Fig. 3

.

3) Separate Housing (R) from Housing (L) by removing eight PT3x16 Tapping screws.

4) Remove the assembly of Hammer case section and Motor section from Housing (L), and separate Hammer case

    section from Motor section.

5) See 

Fig. 4

.  Attach 1R041 (2 pcs) to vise.   Fix 134848-9 in vise securely.  Put Hammer case section on 134848-9

    while fitting the hexagonal portion of Bearing box complete in 134848-9.   Fit another 134848-9 over the hexagonal

    portion of Hammer case complete.  By turning 134848-9  clockwise with 1R223 and 1R224, the Hammer case section

    can be disassembled as illustrated to right. 

1

2

A

[Brush holder section (Viewed from A)]

Fig. 4

DISASSEMBLING

Rear cover

Tapping screw

PT3x16 (2 pcs)

Hammer case

Belt clip

Fig. 2

Screw M4x12

Carbon

brush

Carbon

brush

Torsion

spring

1.

 Move the tail of Torsion spring

    onto the notch of Brush holder.

2.

 Then pull off Receptacle from

    Brush holder.

Note:

Do the above steps while pushing

Torsion spring in the direction of

the arrow so that it cannot slip

out of position.

Hammer case section

Fit 134848-9 over

this hex portion.

1R041

Vise

134848-9

1R041

Bearing box complete

Internal gear 51
O ring 40

Bearing box complete

Hammering mechanism

Hammer case complete

Hammer case cover

Bumper

1R223

1R224

134848-9

Summary of Contents for MAKSTAR BTW250 Series

Page 1: ...30 for BTW250 only Battery BL1830 for BTW251 only Fast charger DC18RA Charger DC24SA Charger DC24SC for BTW250 only Battery Specification Net weight kg lbs Capacity Ah Cell Voltage V 18 Driving shank...

Page 2: ...Large Disassembling Hammering mechanism Magnetizing screwdriver for removing Steel balls 1R346 Center attachment for 1R045 1R288 Screwdriver magnetizer Use for Fig 1 Anvil Surface that contacts Hammer...

Page 3: ...g box complete in 134848 9 Fit another 134848 9 over the hexagonal portion of Hammer case complete By turning 134848 9 clockwise with 1R223 and 1R224 the Hammer case section can be disassembled as ill...

Page 4: ...screwdriver magnetized using 1R288 Fig 7 9 Remove 1R045 by turning the handle counterclockwise 10 Remove Spindle Compression spring 25 and Cup washer 14 from Hammer as illustrated in Fig 8 Important...

Page 5: ...Bearing box complete side Fig 11 5 Assemble Hammer case complete to Bearing box as illustrated in Fig 12 Fig 12 ASSEMBLING Fig 11 Fig 10 Internal gear 51 Bearing box complete O ring 40 stepped end Fit...

Page 6: ...end of Armature If assembled wrong the Motor section cannot be assembled to Housing L Fig 14 2 Because Yoke unit is a strong magnet when assembling Armature to Yoke unit be sure to hold the commutator...

Page 7: ...s in Fig 19 are the Carbon brush section viewed from A Correct Wrong Lead wire of Carbon brush Lead wire correctly routed Torsion spring Tail of Torsion spring Tail of Torsion spring Circuit diagram C...

Page 8: ...in this corresponding corner of Housing L LED Connector large Connector small Light circuit rib Terminal side Switch side Do not cross the lead wires of LED here Lead wire orange pin lead wire holder...

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