Makita DDF481 dimensions Repair, Drill chuck

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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

1R264

Torque wrench

removing Drill chuck

1R291

Retaining ring S and R pliers

removing Retaining ring (INT) R-15

1R298

Hex bar 10 with square socket

removing Drill chuck

1R359

Chuck removing tool

removing Drill chuck (If it is impossible to remove Drill chuck by the steps

mentioned here)

 

 

1R404

Drill chuck removing tool

removing Drill chuck without disassembling Gear assembly

1R404-A

Frame assembly

 

1R404-B

Frame support

 

1R404-C

Pinion gear complete

the components of Drill chuck removing tool (1R404)

921477-5

M8x55 Hex bolt

 

922127-5

M4x16 Hex socket head bolt

 

---

Hex wrench 10

removing Drill chuck

[2] LUBRICATION

It is not required to lubricate, because this product has gear mechanism of factory assembled.

[3] DISASSEMBLY/ASSEMBLY

 

 

 

Fig. 1

 

[3] -1. Drill chuck

 

 

 

 

 

 

DISASSEMBLING

 

 

 

 

 

 

Note: When Gear assembly is replaced with a new one, separate Drill chuck from

 

 

 

Gear assembly in advance. When the repair is independent of Gear assembly,

 

 

 

it is not necessary to separate Drill chuck from Gear assembly.

 

 

4x18 Tapping

 

(1) Remove four 4x18 Tapping screws, and then separate Gear assembly from

 

 

 

screw (4 pcs.)

 

Housing set. (Fig. 1)

 

 

 

 

 

 

 

 

 

 

 

(2) Remove M6x22 (-) Flat head screw by turning it clockwise with Slotted

 

 

 

 

screwdriver.

 

 

 

Fig. 2

 

Note: Use Impact driver to unscrew M6x22 (-) Flat head screw if it cannot be

 

 

M6x22 (-) flat head screw

removed manually. (Fig. 2)

 

 

 

 

 

 

 

 

Drill chuck

(3) Engage 1R404-C with Gear teeth in Gear assembly. (Fig. 2)

 

 

 

 

 

 

(4) Fit two Pins 4 of 1R404-A into the holes of Gear assembly. (Fig. 3)

 

 

 

Gear assembly

Secure Gear assembly to 1R404-A by tightening two 922127-5. (Fig. 3)

 

 

 

1R404-C

Be careful about each direction. (Figs. 3 and 4)

 

 

 

 

 

 

 

 

 

(5) Assemble 1R404-B to 1R404-A so that the lever portion of Gear assembly can

 

 

 

be pushed toward 1st gear position. (Fig. 5)

Fig. 3

 

 

 

Fig. 4

 

Note: Face the flat surface of the shaft of

Lever portion of Gear assembly

 

922127-5

1R404-C to the threaded hole in

 

1R404-B, and pass the shaft through

 

Pin 4 (2 pcs.) of

 

(2 pcs.)

the hole of 1R404-B. (Fig. 6)

 

 

 

 

1R404-A

 

 

 

Fig. 5

 

 

 

 

 

 

 

 

 

 

921477-5 (2 pcs.)

 

 

 

 

 

 

1R404-B

 

 

 

 

 

 

1R404-A

 

1R404

Wide side

 

 

 

 

 

 

 

Narrow side

 

 

1R404

1R404-A

 

 

 

 

 

Fig. 6

 

 

 

 

 

 

Face the flat surface to

 

 

 

 

M5x10 Thumb screw.

 

 

 

Lever portion of

 

 

 

 

 

 

Gear assembly

Shaft of

M5x10 Thumb screw

 

 

 

 

 

 

 

 

1R404-C

of 1R404-B

 

 

 

 

Page 1 Page 3
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Page 1 Page 3
Contents Standard equipment SpecificationOptional accessories Repair Drill chuckAssembling Damage on the magnet portion of Rotor Speed change lever assembly Grip assembly Circuit diagram Fig. D-1Wiring diagram Fig. D-2Fig. D-3 Trouble shooting Check List for Trouble ShootingFig. D-5

DDF481 specifications

The Makita DDF481 is a powerful and versatile cordless drill driver that stands out in the competitive power tool market. Engineered for both professional tradespeople and DIY enthusiasts, this tool combines advanced technology with user-centric design, making it an essential addition to any toolkit.

One of the standout features of the Makita DDF481 is its robust brushless motor. This technology contributes to increased efficiency and a longer lifespan for the tool. The brushless motor can deliver a maximum torque of 54 Nm, making it highly effective for various applications, including drilling into wood, metal, and plastic, as well as driving screws. This torque output allows it to perform well in tough environments, ensuring users can tackle demanding projects without worry.

The DDF481 is designed with a two-speed transmission, which provides flexibility for different tasks. The first speed allows for high torque and controlled driving, perfect for larger screws or tougher materials. The second speed, on the other hand, enables high-speed drilling, which is ideal for faster drilling in lighter materials. This adaptability makes it suitable for a wide range of jobs.

Another key characteristic of the Makita DDF481 is its 1/2-inch keyless chuck that allows for quick and easy bit changes. This feature enhances productivity by saving time during bit swaps, especially when working on projects that require different attachments.

The tool is equipped with an ergonomic grip that enhances comfort during extended use. The lightweight design further reduces user fatigue, making it easier to handle during long periods of operation. Additionally, the DDF481 is compatible with Makita's extensive range of 18V lithium-ion batteries, ensuring that users can easily find a suitable power source for their needs.

Safety features such as an electronic brake, which stops the bit immediately when the trigger is released, enhance user control and prevent accidents. The integrated LED work light is another thoughtful addition, providing visibility in dimly lit areas.

Overall, the Makita DDF481 is a feature-rich and highly efficient cordless drill driver that combines power, versatility, and user comfort. It is a reliable choice for professionals looking to enhance their productivity and for hobbyists seeking quality performance in their projects.
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