How to remove the chuck from a Metabo electric screwdriver

Metabo powermaxx bs how to remove the chuck

Tell me if the batteries from this electric screwdriver (Metabo PowerMaxx BS 12) fit the previous Metabo PowerMaxx BS 12 model?

Answer Metabo Shop Not a bad day. These are new 12 volt screwdrivers and the batteries only fit the new line of 12 volt tools

I bought this screwdriver, but the batteries are marked with a 10.8v. how to think about it? Why not a 12v?

Answer Metabo Shop A bad day. That’s right, the battery itself is labeled 10.8v. 12v these batteries give out at peak loads, that’s why that volt is stated in the properties

How to disassemble the Metabo powermaxx electric screwdriver

Home ” How to disassemble a Metabo powermaxx electric screwdriver

Metabo PowerMaxx BS 12 cordless electric screwdriver. The 2019 model, which replaced one of the most favorite Metabo PowerMaxx BS screwdrivers. The novelty remains the same compact, lightweight, and comfortable to use. Among the innovations are the 12-volt battery, as well as increased torque, which allowed this model to become one of the most productive in its class.

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How to correctly remove the chucks from a drill and screwdriver: detailed instructions

The process of removing a chuck from a drill or screwdriver takes only a few minutes and can be done in a few simple steps. Of course, if the tool and its working head is corked, then you will have to sweat. The method of removal may depend on the type of model, the brand, as well as the fastening method.

Cartridges should be removed at regular intervals to allow for proper lubrication

Cam fastener

To disassemble a device with this type of connection, it is necessary to perform several steps from the above algorithm:

  • Unclamp the head jaws until they are fully extended. A screw should appear inside. It can have a different type of head. Most often, this is a hexagon.
  • To remove the chuck, unscrew the fastener with the appropriate wrench.
  • If you can not smoothly remove the fastener with the hexagon, you need to make a sharp twist in a clockwise direction. If necessary, you can make a jerk or blow on the key.
  • If this does not work, it is possible to clamp the tool in a vice and use a wrench to remove the screw that holds it in place.

There are screwdriver models that have grooves in them. They make it easier to remove the chuck.

Quick clamping

This variant involves using a small hexagon. Insert a wrench through the opening in the carburetor cartridge and turn clockwise. Sometimes it must be pressed down or set against a hard surface.

After the first turn is made, you must gently continue to remove the chuck from the shaft of the drill or screwdriver. Note that, with the same method of attachment, all methods are considered similar for both tools.

Features for single-rod fasteners

To remove the single-coupling fastener chuck, you must use a screwdriver or knife to help separate the coupling. When this part is uncoupled, the ring can be removed. This is done more easily than separating the socket.

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The metal ring is pressed onto the cone, it is hammered out with a bolt, then the part is lightly pressed together with the cams. After that, push the ring out with a sharp push, allowing the cartridge to be completely disassembled.

The subtleties of disassembling two-coupling fasteners

Double-coupling cartridges are removed in the same way, only the number of steps in the algorithm will increase. On all designs, remove the clamping ring in a similar manner with the fastening screw.

We recommend watching the following video for details.

How to remove the chuck when the chuck is tapered

To remove the taper chuck, you need to follow a few simple steps:

  • Clamp the wrench (hexagon) in the designated hole with the short end;
  • start the unit in operating mode and wait for the unscrewing process to begin;
  • remove the hexagon and manually remove the chuck. It is turned along the threads that are provided by the factory on the cone and the base of the chuck.

If neither method was successful and disassembly of the working head failed, you can try to completely disassemble the fixture.

For a complete disassembly of the drill or screwdriver, you can immediately lubricate all moving parts with machine oil and, if necessary, clean the contaminated mechanisms.

Tips and advice

How to unscrew a jammed chuck on an electric screwdriver? To do this, you need to fill it with grease, such as WD-40. You should wait about five minutes for its penetration into all the holes and grooves. To do this quickly, you can use a hair dryer. Warm up the chuck with it and then lightly tap the cams with a hammer on all sides.

It is important to know that the chuck is unscrewed only after the device has cooled. With a heated tool, it will be very difficult to remove the element, because the elements are firmly fixed in the socket.

How to determine the method of attachment

Before you deal with how to remove the chuck from an electric screwdriver, you need to determine how to fix it.

Tools that use a clamping device with Morse taper type of fastening may be marked B10, B12, B14, etc.д.

According to GOST, there can be 9 sizes. from B7 to B45.

The millimeter range of the fastener shank diameters that are suitable for fastening in this electric screwdriver is indicated next to.

The chuck of an electric screwdriver with a threaded attachment is labeled differently.

On domestic models you can meet the type designation 1,0-11 M12h1,25.

The figures before the letter indicate the permissible shank size, the rest is the thread size.

Foreign screwdrivers use an inch designation.

For example:. The part may be labeled as: 2-13 mm ½-20 UNF.

Here, the first digits are the bit diameter, the fraction is the thread diameter in inches, and 20 is the number of threads in each inch.

Features of repair of the engine

Screwdrivers have DC motors which use a cylindrical body with magnets. An armature with winding and brushes is located in the housing. To check the motor, you should disconnect the gearbox and the wiring that comes from the button, and measure the resistance of the armature winding with a tester. If there is no reading, it indicates that there is a breakage, and in the case of an extremely low value we can talk about a short circuit. The resistance value must be measured on the end of the shaft and on the surface of the plate. It must be greater than zero. Failure of the armature causes the tool to shut down during operation, and loss of power, sparks and smoke may also occur.

It is not uncommon to find that if the motor breaks, the gear may be serviceable. Since many engines have a pressed pinion on the shaft, it is difficult to remove it. To do this, you can use a special puller or use improvised means. Do not use pliers or a nail gun for this purpose, as it may bend the shaft and damage the pinion cogs.

  • You can take a profile or channel and make a longitudinal section on it with an angle grinder.
  • Insert the shaft into the groove slot perpendicular to the profile and undercut the pinion.
  • Place the profile on the two bars so that the motor hangs down.
  • Use a nail and hammer to gently tap the pinion to the shaft.
  • Slide the removed pinion onto the new motor shaft, using a hammer and hard surface for putting it on.
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Removing the chuck: Makita electric screwdriver

Makita brand power tools are usually equipped with a threaded mount with an auxiliary fixation by means of a left-hand threaded screw.

  • Unscrew the fixing screw (clockwise).
  • Activate the spindle stop button.
  • Wrap a dense cloth around the housing and squeeze in a vise.
  • Clench the hexagon in the cams.
  • By hitting the free plane of the wrench with a hammer, the chuck is turned and then retracted from the shaft.

Types of attachment

Fastening is done with:

The first fastener is named after C. А. Morse in the 19th century. The connection is made by the mating of the shaft and cone surfaces with the bore due to the identical taper. The fastener is widespread due to its simplicity and reliability.

In the second kind of connection, the shaft and the chuck are threaded. Alignment by screwing the chuck onto the shaft.

The third kind is a modification of the threaded fastener. for security, the connection is secured with a screw. It basically has a Phillips head and a left-hand thread. You can only see the screw by fully opening the cams.

Definition of attachment

The fastening of the cartridge is determined by visual inspection. Morse taper is marked as follows: 1-6 B22. the first digits represent the shank diameter of the bits used, and B22 represents the actual size of the cone.

Threaded connection is also designated by numbers and letters, for example: 1.0. 11 M12×1.25. The first part of the marking also indicates the shank diameter of the bits used, the second part indicates the metric thread size. Imported electric screwdrivers have an inch dimension.

Repair of electric screwdriver chuck with your own hands

Today many people use such a tool as an electric screwdriver, so the high demand for them is not surprising.

Very often the device fails, and the buyer rushes to the repair shop, paying money for the repair.

You do not always want to do this, of course, so in our article we will help you learn more about the device of an electric screwdriver. Some problems can be solved by yourself.

We will consider various cases of electric screwdriver breakdowns, namely: we will deal with the most frequent breakdowns of such an important part of the tool as a chuck.

Electric screwdriver chuck: description, function

The chuck is a metal cylinder with a cavity inside, equipped with a ring and a regulating sleeve. It is fixed on the shaft. With it, the drill bit or grinder is held securely in the chuck for future use.

The tool tool (drill bit) is secured by the thread. There are two ways of tightening the torque.

The first method is to tighten it with a special wrench, the second method is to tighten the screwdriver by turning the chuck in the opposite direction to the axis of rotation of the drill.

How to Disassemble an Electric Screwdriver Chuck

Despite the fact that in today’s market there are many models of screwdrivers, the general approach to the removal of such an element, as a chuck, they have one. We will now describe it briefly.

In order to undo it, you need to remove the screw that secures it to the shaft. It is inside the chuck and the screw should be turned clockwise. After you’ve unscrewed the screw, you have to jerk the chuck backwards.

Attention! If you try to unscrew it manually, it is necessary to put the drill on the second speed if it is a two-speed. When buying the tool, it is advisable to lubricate the screw with machine oil.

In some cases, when this element does not want to yield, then you should put the tool on the first speed, clasp it in the palm of your hand, turn the reverse to the left. The chuck should easily come off the thread.

How to replace the chuck of an electric screwdriver

It is not easy to change it for untrained user because you can’t do it with bare hands without special tool. There are two ways how to remove it, we will consider them in this article. In order to change it, you should pay attention to the steps that we described in the article above. Disassembly is done with the following tools:

  • Hex key. usually 10 mm L-shaped metal rod. Lock its shorter part in the chuck and hold the longer part against something like a table. Twist the chuck and remove it with a twist of the wrench.
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We have considered the way of dismantling with a wrench. The way to remove the element manually is described above.

Important! In severe cases of jamming of movable elements, you will have to dismantle the tool body and take out the spindle with the gearbox and the chuck.

To do this, you will need a vice in which to clamp the tool, and a pipe wrench with which to loosen the chuck. It is easier to perform this task if there are chisels designed for the insertion of a wrench.

But they are not found on all models, so you have to cope with the above method.

It is a moving element in the tool that consists of many moving parts. In the course of work, it is subject to wear and tear due to friction, impact and other factors.

The run-out of the cartridge, its excessive backlash can scare an inexperienced craftsman. In some cases it is not always possible to find the time or money to go to a repair shop.

Therefore, we will look at how you can get by with your own hands when repairing various malfunctions of the tool.

Repair of electric screwdriver with your own hands in case of chuck play

A small backlash of about 1 mm usually does not cause visible problems in operation. If it is larger pay attention to the condition of the gearbox. So, the order of actions is as follows:

  • Remove the screws that secure the upper cover of the tool. Remove it.
  • Unscrew the electric motor from the gearbox. Inspect the mountings.
  • Disassemble the gearbox. Often the cause of failure is a faulty bushing on the inside. It is possible to take out the sleeve by the steps described at the beginning of the article (see how to take out the chuck manually). The bushing can easily be removed by hand.
  • Replacing the bushing. Then assemble everything in the following order: bush, shaft, bush bearings, circlip. Lubricate all rubbing parts.
  • After that assemble the gearbox in the reverse order. Fixing it to the electric motor.
  • Assembling the housing of an electric screwdriver.

Repair of an electric screwdriver with your own hands in case of chuck runout

The main culprit of this problem is the gearbox of an electric screwdriver. To be sure of this, you need to remove it by dismantling it in the above way. This particular breakdown can indicate several problems in the gearbox, which we’ll point out below. The cause may be:

  • Disturbance of the geometry of the gearbox shaft;
  • Wear on the gears;
  • Failure of the shaft support bearing;
  • Worn pins securing the planetary gear satellites.

The parts listed above are only manufactured in factories, so you can’t make them yourself. You only need to buy them and replace the failed.

Electric screwdriver chuck thread

There are three ways in which this movable element is attached to the tool body:

Fixing with a Morse taper has been known for a long time and consists of. The shaft has a tapered shape that follows the contours of the surface inside the chuck. the same taper. You can assemble them in a certain way to make a strong connection.

The mating of shaft and chuck by means of a threaded connection consists of a thread on the end of the shaft onto which a chuck with the same thread can be freely screwed.

The fixing screw is most often used as an additional fastener. Its head has notches for a Phillips screwdriver as well as a left-hand thread. You can see this screw by unscrewing the cams that cover it.

To find out which fixture your tool has, you need to look closely at the tool body. The designation for each type of attachment is different.

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