P 10/13

Repair

[3]DISASSEMBLY/ASSEMBLY

[3]-5 Field

DISASSEMBLING

(1)After removing Rear cover, disconnect Carbon brush from Armature’s commutator as illustrated in Fig. 2.

(2)Disassemble Bearing box section from Gear housing as illustrated in Fig. 3.

(3)Separate Gear housing together with Armature from Motor housing as illustrated in Fig. 4.

(4)Disassemble Armature from Gear housing as illustrated in Figs. 5 and 6.

(5)Disconnect Filed lead wires from brush holders and Switch. Refer to “Circuit Diagram, Fig. D-1”.

(6)Now Field can be disassembled as illustrated in Fig. 32.

Fig. 32

Remove Baffle plate.

4x70 Tapping Screw (2 pcs.)

Do not strike Motor housing. Otherwise, the edge of Motor housing may be damaged/ broken.

Baffle Plate

Provisionally assemble Gear housing to Motor housing. And strike the Gear housing with plastic hammer until the press fit of Field to Motor housing becomes loose.

Drive four 4x22 Tapping screws to Motor housing. And strike the heads of the screws with plastic hammer until Field is removed.

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Makita GA4530, GA5030, GA4030 specifications Field
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GA4030, GA4530, GA5030 specifications

Makita is renowned for its high-performance power tools, and the GA5030, GA4530, and GA4030 angle grinders are no exception. These models exemplify Makita's commitment to innovation, durability, and user-friendly design, making them ideal for both professional tradespeople and DIY enthusiasts.

The Makita GA5030 is a compact and versatile angle grinder equipped with a powerful 5-inch wheel. One of its standout features is its lightweight design, which minimizes fatigue during prolonged use. The GA5030 boasts an 8.5-amp motor capable of delivering up to 11,000 RPM, providing swift and efficient material removal. This model also integrates a labrynth construction that seals and protects the motor and bearings from dust and debris, enhancing the tool’s longevity. Additionally, its ergonomic rubberized grip ensures comfort and control, making it suitable for a variety of applications, from metalworking to masonry.

Moving onto the GA4530, this 4.5-inch angle grinder balances power and portability. Like the GA5030, it is powered by a robust 7.5-amp motor that generates a no-load speed of 10,000 RPM. Its compact design allows for easier handling in tight spaces, making it ideal for both home projects and professional jobs. An important feature of the GA4530 is the protective cover that can be adjusted without tools, allowing for quick changes based on the job at hand. Moreover, this model includes an automatic shut-off carbon brush system that extends the life of the motor, ensuring lasting performance.

Lastly, the GA4030 serves as an excellent choice for those seeking a smaller, yet powerful tool. This 4-inch angle grinder is equipped with a 6.0-amp motor capable of reaching speeds up to 10,000 RPM. The GA4030’s slim body design allows for easy handling, while its rubberized grip provides added comfort and reduces vibrations. This model also features a metal gear housing for increased durability, making it suitable for heavy-duty applications.

In summary, the Makita GA5030, GA4530, and GA4030 are outstanding angle grinders, each offering unique features and capabilities to cater to various needs. With their powerful motors, durable construction, and user-friendly designs, these tools reflect Makita’s high standards in professional-grade equipment. Whether you are a seasoned professional or a weekend DIYer, these grinders will undoubtedly enhance your workflow and deliver exceptional results.
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