background image

 5

7

R

epair

[3] DISASSEMBLY/ASSEMBLY
[3] -5. Motor Section

DISASSEMBLING

1) Remove Housing R (

Fig. 4

)

2) Disassemble Armature from the machine as illustrated in

 Figs. 12 and 13

.

ASSEMBLING

Fig. 15

Fig. 14

Your fingers will be pinched
and injured.

[Wrong]

[Correct]

Fig. 12

Fig. 13

1

2

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, then remove 
    Carbon brush.

Brush holder

complete

Yoke unit

Armature

1) Insert Armature into Yoke unit as described in

 Figs. 14 and 15

.

2) Assemble Brush holder complete to the commutator end of Armature. (

Fig. 12

)

Because Yoke unit is a strong magnet, when assembling Armature
to Yoke unit, be sure to hold the commutator portion as illustrated
to left

.   Do not hold the Armature core as illustrated to right

or your fingers will be pinched between Yoke unit and the fan of
Armature that is pulled strongly by the magnet force.

Yoke unit is not reversible when assembled
to Armature.
Be sure to assemble so that the notch in
Yoke unit is positioned on the drive-end
of Armature.
If assembled wrong, the Motor section
cannot be assembled to Housing L.

[Wrong]

[Correct]

notch

Gear

Summary of Contents for BFS440

Page 1: ...ut W 235 325 The image above is BFS450 All models also include the accessories listed in Standard equipment BFS440 BFS440RFE BFS440Z BL1430 Li ion 3 0Ah DC18RA No No Model No type quantity Charger Yes...

Page 2: ...ittle 4g Each depressed portion for Steel ball 4 Spindle Clutch cam C Gear complete 18 44 Armature 31 18 24 Shoulder pin 8 10 Flat washer 25 Whole portion 19 31 a c a The drum portion that contacts Pl...

Page 3: ...eaf spring Ring spring 33 Dust seal ring Brake pin Lock ring Lock ring Locater complete Locater complete 1 Pull Lock ring strongly Locater complete and Lock ring can be removed together 2 Loosen 4x18...

Page 4: ...44 and Plane bearing 5 front 4 Put each Steel ball 4 in the concave portion on the inside wall of Clutch cam C Then assemble Clutch cam C to Helical gear 48 Note Apply Makita grease FA No 2 to the spe...

Page 5: ...ert Armature into Yoke unit as described in Figs 14 and 15 2 Assemble Brush holder complete to the commutator end of Armature Fig 12 Because Yoke unit is a strong magnet when assembling Armature to Yo...

Page 6: ...NG With the projection on Housing L fitting in the notch on Yoke unit put Yoke unit inside the four ribs on Housing L Fig 17 F R change lever Switch projection prong 1 Fit Brush holder complete in the...

Page 7: ...olor index of lead wires sheath Black White Red Blue Switch lead wires red black must be passed between rib A and rib B rib A LED rib B Switch lead wires red black must be fixed with these Lead wire h...

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