Makita GA5030, GA4530, GA4030 specifications Shaft Lock Mechanism, Plastic dust

Repair

P 9/ 13

[3]DISASSEMBLY/ASSEMBLY

[3]-4 Shaft Lock Mechanism

DISASSEMBLING

(1)Disconnect Carbon brush from Armature’s commutator as illustrated in Fig. 2.

(2)Disassemble Bearing box section from Gear housing as illustrated in Fig. 3.

(3)Separate Gear housing together with Armature from Motor housing as illustrated in Fig. 4.

(4)Disassemble Armature from Gear housing as illustrated in Figs. 5 and 6.

(5)Shaft lock mechanism can be disassembled in the order of Figs. 28 and 29.

Fig. 28

1R268

Pin cap

Pin cap

Shoulder Pin 4

1R350

O ring 5

Applying 1R268 to Shoulder pin 4 through the small hole on Pin cap, strike 1R268 with Hammer.

Now, Shoulder pin 4 comes out from Gear housing.

ASSEMBLING

Fig. 29

Note: Do not removed Pin cap because removal of Shoulder pin 4 damages the inside surface of Pin cap, producing plastic dust. Therefore, be sure to use a new Pin cap for replacement and remove all the plastic dust on Should pin 4.

Pin cap

Compression spring 8

Release 1R268 from Pin cap carefully so that Pin cap is not slung by Compression spring 8.

(1)Remove all the plastic dust on Shoulder pin 4. (Fig. 30)

(2)Assemble the parts for Shaft lock mechanism as illustrated in Fig. 31. Note: Do not use the removed Pin cap. (See Fig. 29)

Fig. 30

Fig. 31

plastic dust

Shoulder pin 4

O ring 5

Insert Shoulder pin 4 through

the hole of Gear housing complete.

Shoulder pin 4

Install Pin cap by pressing it to Shoulder pin 4.

Pin cap

Compression spring 8

Do not forget to set Compression spring 8 in place.