Makita 8270D specifications Repair Removal/Installation of Drill Chuck

Models: 8270D

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Repair

[1] Removal/Installation of Drill Chuck

When replacing Gear assembly, remove drill chuck beforehand as described below. (It is not necessary to remove Drill chuck when disassembling Housing only.)

REMOVAL

1)After fully opening Chuck jaws, remove the chuck screw (M6x22 (-) Flat head screw) by turning it clockwise. If it is difficult to remove, use a Makita Impact wrench.

2)Slide Speed change lever to the position of "Low", and turn Change ring to "Drill mode".

And then secure one end of a hex wrench with Chuck jaws. Hold the machine firmly, and then remove Drill chuck by hitting the other end of the hex wrench using plastic hammer to turn Drill chuck counterclockwise. (Fig. 1)

INSTALLATION

1)Secure one end of a hex wrench with Chuck jaws, and the other with vise.

Shift Speed change lever to "Low", and set the machine in the mode of drilling in forward rotation. Hold the grip of the machine firmly so that your hand cannot be pulled away by reaction torque. And then fasten Spindle to Drill chuck by pulling the trigger of Switch until Spindle is locked. (Fig. 2)

Note: Release the trigger of Switch just after Spindle is locked. Do not keep on pulling the trigger for longer than one second.

2)Fasten Drill chuck to Spindle with the chuck screw (M6x22 (-) Flat head screw) by turning it counterclockwise.

Fig. 1

Slide Speed change lever

Turn Change ring

to the position of "Low".

to "Drill mode".

2

Hex wrench

 

4

 

6

 

8

 

Fig. 2

Shift Speed change

Turn Change ring

lever to "Low".

to "Drill mode".

 

Hex wrench

 

Vise

Push in R/F

 

change lever

 

for forward

 

rotation mode.

 

[2] Removal/Installation of Motor from/on Gear Assembly

REMOVAL

1)Pull Motor out of Gear assembly while turning it in the counterclockwise direction when viewed from the terminal end of Motor. (Fig. 3)

2)Remove Motor bracket from Motor by removing two Pan head screws. Now Motor can be replaced (Fig. 4)

Fig. 3

Fig. 4

 

Motor

 

Pull Motor

 

while turning

 

counterclockwise.

Gear assembly

Terminals

Motor bracket

 

 

 

 

 

Motor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pan head screw

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Makita 8270D specifications Repair Removal/Installation of Drill Chuck, Removal/Installation of Motor from/on Gear Assembly