Build Daily


August 12, 2017 18:08

Repair manual grinder Makita


  • 1 Design features grinder Makita
  • 2 required tools for repair
  • 3 Possible electrical faults
    • 3.1 How to troubleshoot control circuits grinder Makita
  • 4 motor Check
    • 4.1 How to repair the stator grinder Makita
    • 4.2 How to repair the rotor grinder Makita
  • 5 Mechanical damage
    • 5.1 How to repair the gearbox Bulgarian
  • 6 Assemblygrinder Makita 9565
    • 6.1 spindle assembly
    • 6.2 rotor installation in the gear housing
  • 7 few words about fakes
  • 8 Video repair bolgarok Makita
    • 8.1 REVIEW angle grinders MAKITA GA5030 (angle grinder makita)
    • 8.2 Repair grinder Makita GA 9020
    • 8.3 Repair Makita angle grinders with their own hands.
    • 8.4 Repair grinder Makita 9565CV
    • 8.6 Repair Chinese grinder Makita GA9020
    • 8.7 Repair Makita 5030 (Bulgarka 125)
    • 8.8 Makita 9565 the CVR (Bulgarka 125)

famous Japanese brand Makita popular among consumers around the world.All products of the brand Makita distinguished by high quality, ergonomics, reasonable prices.A competent Russian consumer is trying to squeeze out of the tool more than he can give.Makita angle grinders have their ultimate strength.

Repair Makita grinder with his own hands is not particularly difficult, and can be configured as a service center, as well as yourself, as you can freely purchase the necessary spare parts.Faults grinders and their solutions are discussed in detail in the accompanying instructions.

Design features grinder Makita

Bulgarka - this angle grinder, which received its name only in the former USSR.Structurally, any angle grinder (LBM) is arranged the same way.

The principle of operation is based on the Bulgarians Makita electric energy conversion into mechanical.This leads to the rotation of the shaft, which is mounted on the disk for cutting, grinding, polishing.A machine called a corner for the reason that used in the gearbox torque is transmitted at an angle of 90 degrees.

Since the cooling of the motor in the Makita grinder provided by the suction of outside air through the vents, working parts Makita Bulgarians are covered with a special protective powder coating that prevents dust settling.Structurally in Makita grinder provided Labirintovaya sealing system and sealed button "Start".

But each firm to attract a buyer embeds into the design of its highlights.Not deprived of this and Bulgarian Makita.Makita grinders are divided into small and powerful.

Makita grinder labeled depending on the power of the motor.

By design features Makita angle grinders are:

  • Availability labyrinth device that protects the bearings from dirt and dust;
  • windings of the motor in the high-power grinder protected armored coating;
  • Makita Angle grinders are equipped with a special system that protects the tool from jerking during start-up, called Super-Joint-System.

few words about SJS system.The system prevents the effects of kickback, eliminates jerks and jamming of the working body, protects the motor against overload.

SJS system

The system used a spring, which aims to transmit force from the rotor to the gear reducer.The spring acts as a buffer, prevents jerks when starting and stopping.This design significantly reduces vibration and ensures smooth operation angle grinders Makita

Makita grinders are divided into classes according to the size of the working width of the disc.Bulgarian divided into three classes: light, medium, heavy.In turn, each class is divided into grinders for professionals and for domestic use.In professional models bolgarok Makita increased headroom, integrated security system, increased endurance.Professional grinders perfectly withstand high loads for a long time.

Makita angle grinders Household machines have high performance, but very reasonable prices.Do Bulgarians Makita disc with a maximum diameter of 230 mm can be used.

Depending on the diameter of the disc, and are divided into classes Makita angle grinders:

  • diameter 115-125 mm characterizes a touch of class.Easy to keep one hand on the body, acting as a handle.But professional grinders in this class can be equipped with rear handle, which is integrated power button tool;
  • diameter 150-180 mm Makita grinders refers to the middle class.This category includes professional and amateur models with motors of different power.Modern models set rotating rear handle;
  • diameter 230 mm grinder characterizes heavy class.In this class, Makita grinders are available exclusively for professionals.These machines are designed to work on concrete, stone, brick, etc.Their design incorporated all the modern consumer protection from injury.

Models of Makita grinders are available for disc diameter of 115 mm, 125 mm, 150 mm, 180 mm and 230 m.

At high power grinder provides for replacement of carbon brushes without removing the cover of the stator housing.

Makita grinder of different capacities vary in appearance.Bulgarians have the professional capacity of more than 1000 watts large body and comfortable rear handle.The handle is equipped with protective anti-vibration pads black.Bulgarian up to 1000 watts are comfortable housing, which serves as a handle.

On Makita grinder mounted quick cover.This design allows you to remove the protective cover quickly.

required tools for repair

repair their own hands Makita angle grinding machines, it requires the use of a particular instrument.Do not do without a set of screwdrivers.Preferably, they are equipped with the ratchet mechanism.The best option, use a cordless screwdriver.For repair electrical Makita grinder, need a tester, a device for determining the short-circuited turns IR-2.And zagotovte open-end wrench, bearing puller, a hammer, nastavku soft metal.Well, can not do without the necessary lubrication , wipes, liquids for washing the old grease.

LBM start repair should be with their own hands with site preparation, installation of proper lighting.You will need a circuit angle grinder desired model and the proposed guide.

Any defect power tools are divided into two types: electrical and mechanical.

Treat repair nodes Makita grinders will be the example of the circuit LBM Makita 9565.

9565 02

Possible electrical faults

Electrical faults Makita grinder can be divided into control circuits malfunction, damage to the rotor and stator failure.

How to troubleshoot grinder Makita

control circuits If your bolgarkaMakita not included, the cause may be the greatest failure in the power and control circuits.

To get to the control circuit components, it is necessary to remove the back cover poz.38 housing by removing the self-tapping screws 4 × 18 poz.39.Switch ST115-40 K9565 pos.28 mounted in the holder poz.27 switch.the switch closes the lid holder poz.29, which is attached to the motor housing poz.33.

To switch suitable power cord poz.37.With the tester check the integrity of the chain of the terminal to the switch terminals.The switch is controlled by a lever pos.28 poz.30.From the switch contacts, check the chain to the carbon brushes poz.42.

The control circuits are the weakest link in the carbon brushes.The grinder Makita 9565 used carbon brushes CB-318 with automatic shut-off, so check the brush.

speed regulators are set in a professional grinder.The grinder Makita power more than 1000 W capacity for the soft-start system.This system is equipped with angle grinders Makita 9077SF.

Failure of switch failure is eliminated its complete replacement.In case of breakage or damage to the wires of the supply power failure is eliminated by replacing the entire wire or removing damaged parts.

9565 Control circuit diagram inclusion process is carried out using poz.30 lever.If you have disassembled grinder housing for repair or maintenance, prior to assembly grease the grooves move the lever with silicone grease.

motor Check

Furthermore the control circuit in the electrical circuit includes a grinder rotor and stator.These are complex assemblies, repair is recommended that you carry out in specialized centers.But for Russian craftsmen inaccessible nothing.We recommend ways to repair your stator and the rotor with your hands.

How to Repair the stator grinder Makita

On the failure of the stator poz.24 Bulgarian indicates the appearance of a burning odor, overheating, grinder housing, spontaneous set speed grinders.In case the Bulgarian poz.33 stator is fixed by four self-cutting screws 4 × 70 poz.21.To prevent injury to the stator is closed poz.20 protection.

stator- Makita - 9555nn

Stator Repair grinder Makita is to determine the short-circuit or an open winding.It is best to perform a diagnosis of the stator by a special device, called the IR-2.The stator is defective if there are traces of browning coil, defined open or shorted winding turns.

repairing a stator.It is necessary to rewind the motor winding.

How to Repair the rotor grinder Makita

grinder when overheated, burning smell, sparking an increase in the collector area should pay attention to the integrity of the rotor pos.13.

Widget from SocialMart
circuit rotor 9565

scheme grinder Makita

Dismantling the rotor is associated with the implementation of a consistent showdown.To remove the rotor, it must be free from pos.3 gear.To do this, unscrew the hex nut M6 pos.4.To unscrew the nut with one hand it is necessary to hold the rotor.The second hand, using a spanner, unscrew the nut counterclockwise.

Remove the nut, remove the flat washer pos.5, remove the conical helical gear pos.6, remove the retaining spring pos.7.Shaking rotor side gently pull it out of the housing pos.3 gear.After removing the retaining ring position 8, with a pulley puller sneak bearing pos.9.

The grinder Makita 9565 used bearing 6001LLB.

remains to remove the flat washer pos.10 and pos.11 gear cover.

Makita 9565 rotor without bearings

Before you look rotor grinder Makita 9565 with a plastic insulating washer pos.14, flat washer 7 poz.15, bearing pos.16 and rubber bellow 22 poz.17.The grinder is used by the collector bearing 627zz.Russian analogue of 80027.

Repair rotor lies in its replacement by a new or refurbished.Repair the rotor can be independently, but it is necessary not only patience, equipment, material.This kind of high-end operation.

Mechanical damage

In addition to electrical and mechanical grinders includes a portion where the main unit is a reducer.

How to Repair the gearbox Bulgarian

Reducer consists of a body, the driving and driven gears.The pinion gear is fitted on the rotor shaft.The driven gear is attached to the spindle poz.50.

reducer 9565

On grinder Makita 9565 driven gear is pressed onto the spindle.And grinder Makita 9558HN model driven gear mounted on the shaft by means of the keyway.

option mounting the driven gear

gearbox faults associated with failure of the gear teeth.Gears lick or chipped off of the teeth.

gear grinder Makita repair is to replace a pair of helical gears.Changing gears is done only in a pair.

To remove the driven gear can not do without a press or a special puller.Do not use a hammer, because the gear housing is made of a brittle material.

Assembly grinder Makita 9565

Before assembling Makita grinders, check the integrity of all components, their purity.The assembly starts with the installation on the bearing spindle and driven gear.

spindle assembly

On spindle poz.50 worn boot poz.51, housing cover poz.53, poz.54 bearing housing.The bearing housing insert a pre-lubricated bearing 6201LLB.Fit the driven gear poz.56.on the spindle.The spindle is assembled.

Makita pinion gear

rotor gearbox housing Installation in

renovated or a new rotor bearings to wear insert into the gear, put on, according to the drawing, all the details, sit down and commit a leading gear nut.

During the installation of the rotor in the gear housing monitor press-fit bearing.Properly installed rotor rotates easily in the gear case.

rotor installation in the stator housing

In the stator housing is inserted into the assembled gearbox with a rotor, which is pressed onto the bearing Makita gear lubricant by the collector, closed the protective rubber bellow, and verified by the ease of scrolling.It remains to establish the assembled spindle into the gear case.

Assembled spindle insert in pos.3 gear housing, pre-paving the rubber ring and lubricate bolts poz.55 poz.52 sealant.
Service Makita GA 5030 \ perpetrated Makita 5030

All assembly operations of the mechanical grinder accompanied by mandatory lubricated parts.Pay special attention to the process of laying the lubricant in the gearbox grinders.

It is important not only for its quality but also quantity.The Bulgarian gear case lubricant fit in the amount of 1/3 of the volume reducer.

lubrication Norm - less than half the volume

Gathering of the mechanical grinders, each time before tightening the fixing screws, check the gear ease of rotation by turning it over the spindle.

At the final stage it remains to establish the carbon brushes, wear a case back and test the functionality of the tool.

The grinder Makita 9565 CB-325 installed carbon brushes.Timely replacement of carbon brushes not only retain the rotor, but also extend the life of the entire instrument.

Typically, carbon brushes changed after 7000 hours of operation or when worn up to 8 mm in length.In eq carbon brushes Stren cases, you can use the self-made carbon brushes.But at the first opportunity it is necessary to establish a family.

If your Bulgarian after assembly work without extraneous noise, without jerks, you are to be congratulated.The problem repair Makita grinder made.

few words about fakes

The Russian tool market often found fake bolgarok company Makita.The popular and popular brand is popular not only for users, but also various kinds of crooks.

Most often subjected to forging strong Bulgarian firms Makita.For example, Makita 9069.

When selecting Makita grinder, pay attention to the following details:

    quality molded plastic parts;
    workmanship extra pens;
    low price should alert you;
    , read the plate, on it you can find a lot of inaccuracies;
    on Makita grinder must be present serial number;
    on Makita bolgarok cases applied the mandatory inscription, which you will not find on the fakes;
    on carbon brushes Makita original plotted staff numbers;
    usually used in the assembly of screws with hex head screws on the fakes "Phillips";
    armature and stator windings have fakes covered artisanal varnish.