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[2] DISASSEMBLY/ASSEMBLY
[2] -1. Drill Chuck

[1] NECESSARY REPAIRING TOOLS

CAUTION: Remove the battery and the bit from the machine for safety before 
                     repair/ maintenance in accordance with the instruction manual! 

Fig. 1

R

epair

DISASSEMBLING

ASSEMBLING

Description

Hex wrench 8 Removing / installing Drill chuck

Code No.

Use for

M5x22 Pan head screw
(left handed and thread
 locker-coated)

Drill mode

Action mode
change lever

Speed change lever

Press down the three positions
firmly on a worktable. 

workbench

hex wrench 8 plastic hammer

Low speed mode

Fig. 2

Note:  It is required to remove Drill chuck when replacing Gear assembly, but you need not when replacing only Housing.
1) Open the jaws of Drill chuck fully. Then remove M5x22 Pan head screw (left-handed and threadlocker coated) by 
    turning clockwise using impact driver in Forward rotation mode with slotted bit. (Fig. 1)
2) Set Action mode change lever in Drill mode, Speed change lever in Low speed mode. (Fig. 1
3) Fix the short leg of a hex wrench 8 in Drill chuck so that the long leg of the hex wrench 8 comes to the position that is 
    easy to strike. (Fig. 2)
4) Hold the machine firmly on a workbench, and strike the long leg of hex wrench 8 to turn Drill chuck counterclockwise.
    (Fig. 2)
Note
: If it is impossible to remove Drill chuck in the above way, use 1R359 (Chuck removing tool) to remove it. Refer to 
          Makita repair tool list.

Fig. 3

Fig. 4

1) Turn Drill chuck clockwise until it stops by hand. (Fig. 3)
2) Clamp one leg of hex wrench 8 in vise. And fix the other leg of hex wrench 8 in Drill chuck. (Fig. 4)
3) Set Action mode change lever in Drill mode, Speed change lever in Low speed mode. (Fig. 1)
4) Set F/R change lever to clockwise rotation. Install Battery. (Fig. 4)
5) Pull Switch lever slowly to prevent the machine from having impacts. And fasten Drill chuck until the motor is locked.
    Note: 1) Pull Switch lever slowly so that he rotation speed reaches the max level in approx. one second.
              2) As soon as the motor is locked, release Switch trigger.
6) Set M5x22 left handed Pan head screw in place after applying ThreeBond 1321B/ 1342 or Loctite 242 to the threads of
    the screw.  

F/R Change lever

vise

hex wrench 8

Battery

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