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epair

CAUTION: Remove the battery and the bit from the machine for safety before repair/

maintenance in accordance with the instruction manual!

[1] NECESSARY REPAIRING TOOLS

Description

Hex wrench 8

Removing / Installing Drill chuck

Plastic hammer Removing Drill chuck

[2] LUBRICATIONS

The components of Gear ass'y has been lubricated in Makita plant and assembled under strict quality control. Therefore,

it is recommended to replace Gear ass'y without disassembling in repair.

[3] DISASSEMBLY/ASSEMBLY

[3]-1. Keyless Drill Chuck

Note: When replacing Gear ass'y, begin by removing Keyless drill chuck.

As long as the repairing does not concern Gear ass'y, it is not necessary to remove Keyless drill chuck.

DISASSEMBLING

(1) Remove M6x22 Flat head screw. (Fig. 1)

(2) Preset the machine as illustrated in Fig.2.

(3) Hold the machine firmly and pull the switch trigger slowly and carefully.

Note: 1) Pay attention that the machine except Keyless drill chuck starts revolving with strong force. Do not pinch your

hand between the moved machine and Vise in this step.

2) If it is impossible to remove Keyless drill chuck, use 1R359 (Chuck removing tool) to remove it. Refer to Makita

repair tool list.

Fig. 1

M6x22 Flat head screw

with adhesive

Note: Pay attention to the

turning direction.

Open the jaws of Keyless drill chuck fully

and remove M6x22 Flat head screw by

turning clockwise.

If it is difficult to remove the screw with

slotted screwdriver, use cordless impact

driver.

ASSEMBLING

1) Turn Keyless drill chuck clockwise until it sits on the end of the threaded portion of Spindle.

2) Fix the short portion of Hex wrench 8 to Drill chuck, and clamp the long portion of Hex wrench 8 in Vise.

3) Set Speed change lever in the low speed mode and F/R change lever in the Forward (clockwise) rotation mode. Then

Install Battery.

4) Hold the machine firmly and pull the switch trigger to rotate Spindle until the motor is locked.

Note: Pull the switch trigger so that Spindle reaches full speed in one second.

Important: Be sure to release the switch trigger just after Spindle is locked.

5) Secure Keyless drill chuck with M6x22 Flat head screw by turning counterclockwise with impact driver.

Note: If you reuse the removed M6x22 Flat head screw, apply adhesive (ThreeBond 1321B/ 1342, Loctite 242) to

the threaded portion. Makita genuine M6x22 Flat head screw for securing Keyless drill chuck is threadlocker

screw.

Use for

Fig. 2

Set Speed change lever

in the low speed mode.

Set Change ring

in the drill mode.

Hold Hex wrench 8

by tightening the jaws

of Keyless drill chuck.

Vise

Note: Hold the flat surface

Hex wrench 8

of Hex wrench 8.

P 2/ 7

Set F/R Change lever in

the reverse mode.

Install Battery.

Clamp the long portion

of Hex wrench 8 in Vise.

Vise