Makita BDF448 dimensions Necessary Repairing Tools

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Repair

CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.

[1] NECESSARY REPAIRING TOOLS

Code No.

Description

Use for

1R359

Drill chuck removing tool

(Use this tool if Drill chuck cannot be removed by the method of

described in “[3]-1 Drill chuck disassembling”.)

 

Hex wrench 10

removing/ mounting Drill chuck

[2] LUBRICATION

It is not required to lubricate the gear section because the portion is replaced as a factory-assembled gear unit.

[3]DISASSEMBLY/ASSEMBLY

[3]-1. Drill Chuck

DISASSEMBLING

(1)Remove M6x22 Flat head screw as drawn in Fig. 1.

(2)Preset the machine as drawn in Fig. 2. And set Hex wrench 10 to Vise as drawn in Fig. 3.

(3)Gripping Hex wrench 10 with Drill chuck firmly, remove Drill chuck as drawn in Fig. 4.

Fig. 1

Open Drill chuck fully and remove M6x22

Flat head screw by turning it clockwise.

Note: Use Impact driver to unscrew

M6x22 Flat head screw if it could not be removed manually.

M6x22 Flat head screw (Left handed thread)

Fig. 2

Set Change ring

Speed change lever

to Drill mode.

Set Speed change lever

Change ring

to Low speed mode

 

designated with 1.

 

F/R change lever

 

Set F/R Change lever

 

to Reverse (counter-

 

clockwise) rotation.

 

Attach Battery.

Fig. 3

 

CORRECT

 

WRONG

 

Hold the long end.

Grip flat surfaces

Do not hold

Do not hold edges

 

Hex wrench 10

of Hex wrench 10.

 

the short end.

of Hex wrench 10.

 

Vise

Setting of

 

 

 

 

 

 

 

Hex wrench

 

 

 

 

10

[A]

 

 

[A]

 

 

Hex wrench 10,

 

Hex wrench 10,

 

Vise

viewed from side [A]

 

viewed from side [A]

 

 

 

 

Fig. 4

Clockwise

Clockwise* recoil force of Machine

Hex wrench 10

Vise

Counterclockwise

Counterclockwise* force to be applied by operator

*Note: The rotational direction is viewed from operator.

1.Hold Hex wrench 10 with Drill chuck and grip Machine. Important:

Grip Machine tightly with both hands to provide

the sufficient counterclockwise* force against clockwise* recoil force of Machine.

2.Pull Switch trigger slowly.

3.Spindle rotates counterclockwise* and consequently Drill chuck is removed from spindle.

Image 2
Contents Echnical Information Necessary Repairing Tools To Forward clockwise Repair DisassemblingGear Assembly, Motor Section Correct WrongSee Fig DISASSEMBLY/ASSEMBLY Parts related to Drip-proof structure Switch plate completeF/R Change Lever CushionCircuit diagram Wiring diagramFig. D-4 Red Blue Brush holder complete Fig. D-4A