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P 7/ 9

1) Remove DC motor section in accordance with 

the clause [4]-2

.

2) Disassemble Gear section as illustrated in 

Fig. 23

.

3) Remove Leaf spring from Housing L. (

Fig. 24

)

4) Cover the pins of Spur gear 7 complete with Internal gear 69. Refer to the direction of Internal gear 69. (

Fig. 23

)

5) After inserting the pins of Spur gear 7 complete into Spur gears 27 (3pcs.), mount Flat washer 12 on Internal gear 69.
6) Install the assembled parts (Flat washer 12, Internal gear 69, Spur gear 27 (3pcs.) and Spur gear 7 complete) into 
    Housing L so that the large protrusion of Internal gear 69 can be seen. (

Fig. 25

7) Insert Leaf spring into Housing L. (Inserting Leaf spring into Housing L before installation of the assembled parts
    causes difficulty.)
8) Plate and Spur gear 55 complete have to be fixed as illustrated in 

Fig. 26

. Refer to their directions.

DC motor

Leaf spring

large protrusion of Internal gear 69

(small protrusion)

Sleeve 5

Flat washer 10

Plate

Spur gear 55 complete

(To Housing L: Refer to 

Fig. 18

)  

Flat washer 12

Internal gear 69

Note

: Apply a little amount of Makita grease N No.2 to the inner periphery.

[4] DISASSEMBLY/ ASSEMBLY
[4]-5. Replacing Gear section

R

epair

Fig. 23

Fig. 24

Fig. 24

Fig. 26

Spur gear 27 (3pcs.)

Flat washer 10

Plane bearing 10

Spur gear 7 complete

Note

: Apply a little amount of Makita grease

                                             N No.2 to the pins.

4x18 Tapping screw

Pin10

Summary of Contents for BST220

Page 1: ...es length 10mm 3 8 13mm 1 2 16mm 5 8 19mm 3 4 22mm 7 8 Battery chargers DC18RA DC24SA DC24SC Li ion Batteries BL1415 BL1815 L H W Dimensions mm Width W Height H Length L 251 9 7 8 BST221 BST220 247 9...

Page 2: ...socket head bolts mainly for Driver guide and Holder 4 9 up to 7 4 N m M4x4 Pan head screw mainly for Adjuster base 0 6 up to 1 0 N m 1 NECESSARY REPAIRING TOOLS CAUTION Remove Battery and Staple for...

Page 3: ...h and Terminal can be replaced 5 Remove Spur gear 55 complete and then lever up Spur gear 7 complete with slotted screwdriver Fig 6 Internal gear 69 DC motor and their linked parts come with Spur gear...

Page 4: ...er portion by gloved hand as illustrated in Fig 14 or clamping in vise loosen Guide bolt by hooking the flats and turning counterclockwise by monkey wrenches When Guide bolt is separated Compression s...

Page 5: ...g L Fig 18 6 Check that Safety lever can be slid smoothly 7 Secure both ends of Hammer driving section with 4x18 Tapping screws 2pcs and Fix plate Fig 9 8 Move Safety lever to the forward position to...

Page 6: ...l of Torsion spring 3 Switch button Pin 3 Put the bend portion of Release plate between Switch button and wide width of Leaf spring Put the hook portion of Leaf spring along the inside of Trigger Put...

Page 7: ...an be seen Fig 25 7 Insert Leaf spring into Housing L Inserting Leaf spring into Housing L before installation of the assembled parts causes difficulty 8 Plate and Spur gear 55 complete have to be fix...

Page 8: ...ther spring end using Pincette And hook the spring end with the hook on the bottom of Sub magazine as illustrated in Fig 30 4 As for Lever portion assembling the components in accordance with the way...

Page 9: ...ex of lead wires sheath Black Red White DC Motor Terminal Do not put Lead wires on rib Face Lead wires to DC motor side when connecting Terminal and Flag connectors of the Lead wires Face Lead wires t...

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