Assembling

P 3/ 11

Repair

[3]DISASSEMBLY/ASSEMBLY

[3]-1. Drill chuck (cont.)

DISASSEMBLING

(6)Set the lever portion of Gear assembly to 1st gear position. (Fig. 6) Set Gear assembly in drill mode. (Refer to Fig. 7.)

Tighten two 921477-5 evenly while keeping 1R404-B parallel with 1R404-A, and then tighten M5x10 Thumb screw of 1R404-B. (Fig. 6)

(8)Hold 1R404 in Vise as drawn in Fig. 7.

Secure 1R298 to Drill chuck and attach 1R264 to 1R298. (Fig. 8)

(9)Turn 1R264 counterclockwise to remove Drill chuck. (Fig. 8) Note: When it is impossible to remove Drill chuck, try the steps

with 1R359 mentioned in Makita repair tool list.

Fig. 6

Fig. 7

	1R404	Set Gear assembly
	1R404	in drill mode.
		in drill mode.
		1R404

narrow side

wide side

Fig. 8

Keep 1R404-B parallel	M5x10
with 1R404-A.	Thumb
	screw
	Shaft of
1R404-A	1R404-C
1R404-A	1R404-B
Lever portion of Gear assembly
921477-5	(2 pcs.)

1R264

1R298

1R404

Vise

Assemble by reversing the disassembly procedure.

Note: • When you turn 1R264 clockwise to assemble Drill chuck to Spindle, the tightening torque should be 65 up to 72.5 N∙m (660 up to 740 kgf∙cm).

•M6x22 (-) flat head screw is thread locker type, and therefore, apply ThreeBond 1342H/ Loctite 243 to the thread and tighten the screw using Cordless impact driver with slotted bit.

[3]-2. Gear assembly, Rotor, Stator assembly, Speed change lever assembly

DISASSEMBLING

(1)Remove nine Bind PT3x14 tapping screws and four 4x18 Tapping screw, and then separate Rear cover and Housing R from Housing L. (Fig. 1 of the previous page and Fig. 9)

(2)Remove the following parts from Housing L at a time. (Fig. 10)

•Gear assembly with Drill chuck

•Motor section

•Speed change lever assembly

(3)Remove Speed change lever assembly from Gear assembly, and then separate Motor section from Gear assembly. (Fig. 11)

(4)Put Rotor section on a workbench so that the drive end of Rotor touches the workbench.

Press Stator down to separate from Rotor. (Fig. 12)

Fig. 10

Fig. 11

Speed change lever assembly
Motor section	Gear assembly

Fig. 9

	Rear cover
Housing L	Housing R	4x18 Tapping
Housing L	Housing R	screw (9 pcs.)
		screw (9 pcs.)
	Fig. 12
	Rotor
	Stator

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.