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August 12, 2017 18:08

How to repair the hammer mechanism punch Makita 2450 and 2470


  • 1 Repair mechanical punch Makita 2450 and 2470
  • 2 Mechanical malfunction drills makita 2450 and makita 2470
    • 2.1 Repair trunk pieces punch Makita 2450

Evenvery reliable company Makita drills break down over time.
Any failure is eliminated, it is only necessary to have a direct hand and perseverance.In addition to electrical faults
drills and prone to mechanical failure.
drills Working with solid materials in a dusty environment reduces service life and requires user intervention to perform preventive maintenance.

Repair mechanical punch Makita 2450 and 2470

Any repair tool starts with determining the nature of the fault and disassembly.

Run repair punch Makita 2450 and 2470 may be a user with initial locksmith skills and is familiar with the electrical safety requirements.

This article discusses the mechanical part of the gun Makita, major faults and their solutions.
General view of the mechanical part
Dismantling mechanical punch Makita 2470

To get to the mechanical part of the gun, it is n

ecessary to remove or dismantle cartridge.

cartridge disassembly quick
Install hammer on the rear housing cover on a table covered with a clean cloth or paper.Using tweezers or a screwdriver, remove the rubber tip 35, item 1.

Carefully release the spring ring item 2, the coupling guard position 3, position 4 steel ring.You get to a steel ball with a diameter of 7 mm poz.20.

assembly - holder

Now you can remove the body of the mechanical part
He is black.
Using the screwdriver, remove the four screws on the side of the case.
Removing the gear cover
Clutching his right hand black casing, push down with your thumb on the end of the shaft from which the cartridge is disassembled.Plastic housing comes off easily.

Then it is necessary to remove the gear shaft.

removing gear

To remove the mechanical part of the electrical, you must first remove the electro.
Remember!At the bottom of the rotor housing is held electric brushes that it is necessary to remove.

ensuring that the electro disconnected from the lamella rotor, pry the screwdriver metal casing perforator on the border of green plastic case.

now proceed to detach from the rotor mechanical perforato the rotor mechanical unit pa.The rotor is held in mechanical parts due to helical gear unit.
If you take one hand the rotor body and another body of the mechanical part and pull in different directions, shaking, you disconnect the two nodes.

get this such a node in the old grease.
Then unscrew using hexagon two bolts M4 × 12, item 43, art.266273-7 with internal hexagon.
Pull the shaft with the intermediate spur gear 10 poz.80, art.226399-7.
of the inner shell poz.49, art.153687-8.Clear items from the old grease.

get this such a mountain of pure components.
prepared for the assembly of parts
And now carefully review the details, rubber rings discard immediately, picking up new ones.
Defective parts replaced.

Mechanical malfunction drills makita makita 2450 and 2470

For frequent mechanical failure Makita drills are:

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  • quick destruction of the cartridge;
  • failure of bearings;
  • impact mechanism failure;
  • wear the gun barrel;
  • wear gum striker and striker;
  • breaking gears.

Repair punch cartridge is made to replace the boot and the rubber ring and the conical spring and a steel ball that provides a working tool clamp (drill).This indicates that the working tool?namely drill, held in the cartridge is bad.

main reason - wear steel ball 7.0 poz.20, art.216022-2.Ball Wear comes from the pollution of the cartridge barrel due to ingress of dust and dirt.

General view and punch Makita chuck device is shown in the photo below.
type of cartridge

Repair Hammer chuck makita 2450 with his own hands to make a snap.The cartridge should be disassembled to release the old grease, throw rubber parts to replace faulty.

more complex faults require mechanical device knowledge punch Makita 2450.

determine the nature of the fault punch Makita, proceed to disassembly of the mechanical part, called a reducer.

Disassemble the mechanical part according to the attached video.
release it from the old grease.
Carefully inspect all parts, their integrity, the level of wear.All rubber products in any disassembly require replacement.
Spare gum

Consider repairing the gun barrel.Let us examine the mechanism completely.
Video disassembly, lubrication and assembly punch Makita

Repair trunk pieces Makita rotary hammer 2450

Remember!At the bottom of the rotor housing is held electric brushes that it is necessary to remove.

In the next stage of the excavated mechanism is necessary to disconnect the rotor.The rotor is disengaged from the mechanism simply pulling out the, as held by the friction of two helical gears.

The result here is a messy knot.
general view of the mechanical part 01

Now you have to separate the shaft of the striking mechanism.

Most often wear rubber rings, key striker.24, compressor spring poz.18.and parts of the cylinder.
Here's how worn and broken parts when the barrel misuse tool.

Consider the most complicated failure - the failure of the impact mechanism."Strike»
characteristic signs of the failure of the impact mechanism is the lack of impact noise and an unpleasant working punch mode.

This failure is typical for the drills, which during operation is pressed down strongly to the treated surface.
disassembled the gearbox, remove debris and pieces of foreign material.We find the faulty part and cleanse all the old grease.

Very often destroyed striker poz.24, art.324396-8, which is part of the trunk.
shock mechanism defect
metal ring poz.27.Art.324216-6.
Wear shock bolt housing
Discard damaged parts, replace it with a new cover with a thin layer of grease.Details are ready for assembly.But more about that in the next article.

Good luck to you!