Makita 6305 Technical Information Download

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1) Remove Drill chuck as described in [3] -1.
2) Remove Carbon brush, and unscrew four 5x40 Tapping screws that fasten Gear housing to Motor housing.
3) Separate Gear housing from Gear housing cover complete. Use of Grip complete will make the removal easier.
Attach Grip complete to gear housing, and tap the shaft portion with a plastic hammer. (Fig. 4)
4) Fix Gear housing in vise, and remove Bearing retainer 22-36 by turning clockwise with Adjustable bearing retainer
wrench (No.1R316). (Fig. 5)
5) Remove Retaining ring S-15 from Spindle using Retainer ring S and R pliers.

[3] -2. Spindle and Gear Section

DISASSEMBLING

Motor housing

Gear housing

Gear housing cover complete

Fig. 4

Fig. 5

6) As illustrated in Fig. 6, by tapping the edge of the end surface of Gear housing, the following parts can be removed;
Ball bearing 607LLB, Gear complete 12-41, Helical gear 34, Sleeve 15, Woodruff key 4
7) Spindle can now be removed from Gear housing by pressing from the threaded end. (Fig. 7)

Fig. 6

Fig. 7

Fig. 9

Fig. 8

Woodruff Key 4

Sleeve 15

Ball Bearing 607LLB

Helical Gear 34

Gear Complete 12-41

Spindle

Ball Bearing 6202LLB

ASSEMBLING

Ball Bearing 607LLB
(for Gear Complete 12-41)

Gear Housing

1) Put Ball bearing 607LLB in place into the bearing box portion
of Gear housing. (Fig. 8)
2) Press-fit Spindle into Ball bearing 6202LLB using arbor press.
Then assemble the Spindle to Gear housing.
3) Assemble Bearing retainer 22-36 to Gear housing fixed in vise.
(Fig. 5)
4) Do the following steps to assemble the Gear section.
(Refer to Fig. 6.)
1. Mount Sleeve 15 to Spindle.
2. Put Woodruff key 4 into the key hole on Spindle.
3. Assemble Helical gear 34 to Spindle.
4. Secure Helical gear with Retaining ring S-15.
5) Assemble Gear complete 12-41 to Gear housing while engaging
the small gear of the Gear complete with Helical gear 34.
(Fig. 9)
Note: Do not forget to install Flat washer 6 and Pin 3 in place.