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Repair

[3]DISASSEMBLY/ASSEMBLY

[3]-2. Gear Ass’y and DC Motor

DISASSEMBLING

(1)Remove Keyless drill chuck.

(2)Gear ass’y and DC motor can be disassembled in the order of Figs. 2 to 6.

Fig. 2

 

Bind PT3x16

Housing set (R)

tapping screw

(9 pcs.)

 

Housing set (L)

Disassemble Housing set (R) by removing

Bind PT3x16 tapping screws (9 pcs.).

Fig. 3

Gear ass’y

Speed change lever ass’y

DC motor

Housing set (L)

Remove Gear ass’y, Speed change lever ass’y and DC motor with Switch from Housing set (L) as illustrated above.

Fig. 4

 

Fig. 5

notch of Speed

 

Gear ass’y

 

 

change lever

 

DC motor

ass’y

protrusion of

 

 

 

 

Gear ass’y

Motor bracket

 

 

Pull off Gear ass’y while turning

Remove Speed change

 

it clockwise viewed from DC

 

motor side.

lever ass’y from Gear

 

 

Now Gear ass’y can be replaced.

ass’y.

 

 

 

Fig. 6

M4x8 Pan head screw (2 pcs.)

Motor bracket

 

DC motor

Cap

Remove DC motor with Cap from Motor bracket by removing M4x8 Pan head screws (2 pcs.).

Remove Cap from DC motor.

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Makita BHP453 dimensions Gear Ass’y and DC Motor

BHP453 specifications

The Makita BHP453 is a versatile and powerful cordless hammer drill that has become a favorite among both professional contractors and DIY enthusiasts. This tool is designed to deliver exceptional performance in a wide variety of applications, making it a reliable choice for tasks ranging from drilling holes to driving screws.

At the heart of the BHP453 is a robust 18-volt lithium-ion battery, which provides ample power for demanding jobs. The lithium-ion technology not only ensures longer run times but also reduces the memory effect, allowing users to recharge the battery at any time without worrying about diminishing performance. This is particularly beneficial for professionals who require efficient and uninterrupted operation on the job site.

One of the standout features of the Makita BHP453 is its 2-speed gear mechanism. This allows users to choose between a high-speed mode for drilling into wood and a lower-speed mode for more controlled drilling in tougher materials like masonry. The variable speed trigger offers further control, enabling precise results whether working on delicate projects or heavier tasks. Additionally, the drill can produce up to 1,700 revolutions per minute (RPM) and up to 22,000 beats per minute (BPM) for hammer drilling, providing impressive power.

The BHP453 is equipped with a 1/2-inch keyless chuck, which allows for quick and easy bit changes without the need for additional tools. This feature enhances productivity by minimizing downtime during bit swaps. Its compact design, weighing in at just around 4.0 pounds, ensures that the tool is comfortable to handle, even during prolonged use, reducing user fatigue.

Another significant technological advantage of the Makita BHP453 is its built-in LED work light. This light illuminates dark workspaces, providing visibility and enhancing safety while working in tight or poorly lit areas. The rubberized grip further enhances comfort, providing a secure hold that improves control and stability during operation.

The Makita BHP453 hammer drill is engineered with durability in mind. Its all-metal gear construction ensures a long service life and reliable performance under tough conditions. In summary, the Makita BHP453 is a powerful, user-friendly hammer drill that stands out for its battery technology, versatile drilling capabilities, and practical features, making it an excellent addition to any toolbox.