Mechanical part of the perforator Makita 2450 and 2470

Due to ingress of dust, dirt, moisture, the internal lubricant eventually becomes firm and does not fulfill itsdestination. The puncher starts to work by extraneous noise. When starting to repair the puncher, be sure to read the attached instruction for disassembly, lubrication, assembly of the Makita 2450, 2470 perforator units. The Makita 2450 and 2470 perforator circuitry will help correctly disassemble the faulty components and find defective parts. And also tell you how to disassemble the Makita perforator 2450.

The dismounting of the Makita 2470 starts with the removal of the mode switch knob.

How to disassemble the drill

Place the gun on a clean surface.

When disassembling the mechanical part of the Makita 2450 or Makita 2470 perforator, always remove the mode switch knob.

At the beginning of the operation, the knob is set to the "Blow" mode( the extreme right clockwise position).

On the handle with a screwdriver podkovyrivaetsya and removes the latch.

After removing the latch, the handle is moved to the extreme left position, into the "Drilling" mode.

The finger gripped handle is taken out of the housing slots.

Video instruction for disassembling the handle of the rotary switch of the perforator Makita 2450

How to install the mode dial
To install the mode switch in the housing, it is necessary: ​​
• insert the switch in the "drilling" position in the landing socket until it clicks;
• turn the switch anticlockwise to the "kick" position;
• turn the switch counter-clockwise to the "drilling" position;
• insert spring and red button;
• from above, insert the cover before fixing.
The mode switch is assembled.

In the second stage, you need to disassemble the quick-release chuck and perform the repair of the punch holder with your own hands. By the way, the cartridge requires dismantling only for models Makita 2470. The device cartridge is quite simple, and with its repair any person who knows little locksmith skills will cope.

The order of disassembly of the cartridge of the perforator Makita

The repair of the cartridge of the perforator begins with the installation of the perforator vertically on the back cover of the case. Correctly perform the disassembly work will help the scheme hammer gun.
Do you need a replacement for the mikita 2470 perforator cartridge? The answer can only be obtained after a complete disassembly of the cartridge by one's own hands.
With the help of a screwdriver or puller, an anther is removed, the cartridge is released from the lock ring, clutch cover, metal ring 20 pos.4.Next we need to carefully get the ball pos.20, remove the guide washer pos. 5 and the conical spring pos. 6, its supporting. The cartridge is dismantled.

The diagram below shows the device of a punch holder.

The main malfunction of the makita 2450 perforator, which causes defects in the work of the chuck, are:

• wear of the protective rubber boot pos.1;
• release of retaining ring pos.2 or partial wear;
• wear of the ball pos.20;
• loss of elasticity of the conical spring pos.6 or its extension.

The repair of the punch holder is not a complicated procedure and is usually easily performed by any person who can hold a screwdriver in his hand.

If replacing a rubber anther, a retaining ring, a conical spring is not difficult, then replacing a new ball requires attention. The new ball should have a diameter of 7 mm ± 1 μm in diameter.
It is recommended to use a special grease developed for the Makita perforator as lubricants.
The lubricant has an index Makita P-08361, Makita 183477-5 SDS-PLUS 30g for the reducer. It is recommended to use the Makita grease 196804-7 for the drill shanks.

When assembling the cartridge, install the conical spring with the narrow side to the gun.
Do not forget, the repair of the puncher cartridge with your own hands requires attentiveness from the collector.

How to assemble the

quick-release chuck Assembly is made on a clean surface. The parts are pre-washed, dried and lubricated with a thin layer of recommended lubricant.

Lubricates the gear shaft with Makita 183477-5 SDS-PLUS grease. On the shaft in a certain sequence, all the incoming parts of the cartridge are assembled.

Installing the conical spring pos.6, put on the guide washer pos. 5 and fix it with the ball pos. 20, inserting it into the groove of the reducer shaft.

It remains to wear the ring pos.4, the clutch cover pos.3, fix the parts with the locking ring pos.2.At the last stage insert the protective tip pos. 1
into the end of the cartridge. The repair of the Makita 2450 perforator cartridge is now complete. It remains to check its quality by inserting a drill in the cartridge. When properly assembled, the chuck keeps the drill from spontaneous dropout.
The cartridge is assembled.

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We disassemble the

gearbox. To get to the mechanical part, you need to remove the plastic case.

Procedure for dismantling the mechanical part of the gun Makita
First remove the protective plastic housing in black. The case is removed after you unscrew the four screws securing the case from the end.
Pressing the end of the shaft, you squeeze the gearbox out of the housing.

After removing the housing, it is necessary to separate the rotor from the reducer. A reducer is a common mechanical part.
Separates the rotor from the mechanical part( reducer) simply.
With the right hand, it is necessary to clamp the reducer, press the rotor with the left.
Wiggle, pull both parts in opposite directions. The rotor is held in the gearbox due to the friction of the helical gears.
Basic malfunctions of the Makita perforator occur in the mechanical part of the tool.

The most typical malfunction for the mechanical part, failure of the impactor.

Disassembly of the shock mechanism
The impact mechanism is assembled on the inner casing and consists of a reducer shaft and an intermediate shaft.
Rotational motion is transmitted via helical gears to the intermediate shaft.

The gear shaft is a hollow barrel in which the cylinder moves freely.

A small spur gear is attached to the intermediate shaft and transmits the rotation to the large spur gear of the reducer shaft in which the impactor is mounted.
A translational motion on the shaft of the reduction gear of the impactor is simultaneously transmitted by transferring from the bearing of the intermediate shaft to the cylinder moving in the barrel of the reducer.

Now go to the disassembly of the intermediate shaft.

Dismounting the intermediate shaft

The shaft 43 is fitted with a helical gear, pos. 42, to which the rotation from the rotor gear is transmitted, the rolling bearing 608zz pos.41, which transfers the forward movement to the hinge of pos. 34 piston pos.32.
On the other side of the shaft, the clutch is fitted pos. 39, the spur gear 10 pos.80, the compression spring pos. 38, the lock ring S-7 pos.37, the bearing 606zz pos.36
Special attention should be paid to the condition of the rolling bearings.
The puncher has imported bearings. Installation of domestic bearings is allowed.
Bearing 606zz can be replaced with 80016, bearing 609zz is changed to 80019.

We now turn to disassembly of the shaft of the percussion mechanic

Shaft Dismantling of Shock Mechanism

Dismantling of the Makita 2470 perforator barrel is a simple process if you use the Makita perforator device scheme.
The shaft is a barrel pos. 21, in which the impactor is assembled.
The gear wheel pos. 19 is fastened to the barrel, which is pressed down by a spring pos.18, through a washer pos.17 and fixed by a lock ring pos.16.

The cylinder moves positively 32 in the barrel, acting on the pods pos24.On the reverse side of the striker is fixed a metal ring pos.27, transmitting a blow to the drill.
And when is it necessary to replace the gun?

Most often, a metal ring goes out of action.

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Cylinder with drummer

We disassembled the disassembly.
We change details for serviceable ones and are preparing to assemble. More information about the lubrication and assembly of the perforator.

Read if there are problems with the electrical part of the punch.

Quick disassembly video of the gun Makita