How to Disassemble a Bosch Gsb 16 Re Drill
When the drill is working properly, the user does not have any questions, but there are cases requiring dismantling, many get into a stupor, solving the problem: how to remove the cartridge from the drill. To correctly perform such an operation, you need to know how the cartridge is mounted on the shaft, and then already begin dismantling.
The following types of cartridges:
- keyless action or self-clamping device;
- sds devices of a collet type;
On a drill with keyless chuck you can change the drill or other nozzle quite quickly, without the need to use any additional devices. The cartridges of the first option are divided into single and double coupling devices.
One-piece devices have a shaft locking system that is triggered during tool change. They have a significant negative point. the very low strength of the fixing elements, the outer parts of the cartridge are made of plastic, which greatly increases their damage and breakdown of the entire device.
Cartridge repair of this kind is not provided. only a replacement.
Manufacturers put on percussion models and perforators cam products, because their design is more robust. mainly turnkey cartridges are used here, for reliable fastening of the drill.
Collet type The cartridge was created back in the 70s of the last century, its design is different in that there are two grooves in the rear part, and the drill must be deepened by 40 mm with screwdriving movements. There are 4 grooves: 2 fixing, 2. for guiding the wedges, the cutting tool is fixed with locking balls.
In a classic gear device, the tightening is adjusted using key for cartridge, which comes with the drill kit. To properly unscrew the cartridge, you must adhere to the recommendations of an experienced master, for this, watch this video:
The chuck on the shaft of an electric or manual drill is fastened in two ways. a conical connection and a thread, so there are a minimum of varieties. In practice, there are devices with metric or inch threads, and markings are always present on the body of the product, even the smallest one.
For example, a designation of this kind 1.5-15M13x1.2 is deciphered as follows:
- 1.5-15 is the diameter of the tail of the cutting tool in millimeters;
- M13. metric thread with a diameter of 13 mm;
- 1,2. thread pitch.
Using thread in inches. UNF and diameter: 1/2 ”is indicated. This type of connection is considered international and is used in all instruments of foreign manufacturers. For special reliability, a stop is placed on the shaft, in the form of a screw on the left-hand thread. this must be taken into account when confusing how to disassemble the cartridge of an imported drill. Unscrew it only clockwise.
Video: How to Disassemble a Bosch Gsb 16 Re Drill
The second method uses morse cone, which today is more often called an instrumental cone. The shaft has a tapered part at the end, on which the device is mounted, with a little effort to make a tight connection. The marking is: B10, where the letter indicates the use of the cone, and the number indicates the diameter of the tail of the cutting tool. This type of fastening is common with screwdrivers.
Some drills are equipped with an adapter (adapter) for the clamping mechanism, which allows drilling with maximum accuracy.
In modern models of drills, such as Interskol or Makita, the fixing of a drill or other nozzles is carried out by a chuck with cam mechanism: 3 or 4 cams securely hold the cutting tool, they can only move along the axis of the drill shaft. The keyless chuck is manually adjustable, more complex designs used in modern drills. with a key.
During operation, a beating of the clamped bit may appear, the cause is the wear of the cams during prolonged use. The tool repair is carried out as follows: it is necessary to remove the device from the shaft, the same actions are necessary when jamming the drill, because it can only be removed after the cartridge part is completely disassembled.
There is also such a malfunction: cartridge rotates relative to the tool shaft. The reason for this behavior is damage to the threaded part of the device mount, or the landing cone has a subsidence. The way out of this situation is to change the cartridge to a working analogue.
Tool for work
Replacing the drill chuck is easy if you know the design of this unit and the methods for attaching it. To carry out repairs you will need a simple set of tools:
- bench vise, you can use not standard, but a smaller version for household needs;
- steel hammer;
- joiner’s mallet;
- pliers or pliers;
- medium sized pipe wrench;
- set of wrenches;
- sanding paper for grinding.
The list indicates the minimum set, there are situations where other locksmith tools may be required.
Dismantle the cartridge
Depending on the method of attaching the cartridge mechanism, disassembly methods will vary.
It is necessary to disassemble such a design in this order.
- Gently loosen the locking screw.
- We unscrew the cartridge counterclockwise, if the thread is tightened to the conscience, we clamp the tool shaft in a vice. To unscrew, use a gas key. Then we remove the device and examine it for integrity and serviceability.
- If the drill bit is jammed in the lips, then we apply not strong, but accurate hammer blows using a punch on the cams from above.
Installation is carried out in reverse order. When tightening a new device, the shaft must lock from turning free hand. Last we twist the locking device. To help home craftsmen video:
It is quite easy to remove the cartridge from the conical part of the shaft. The drill kit should have a special device for this purpose, but many experienced craftsmen use this method: they turn the tool upside down with a drill, fix it and evenly hit the back of the device with a hammer and knock it off the shaft.
After dismantling it is necessary sand conical surfaces with an emery cloth, if there are scuffs on the surface, then remove them with a file. The new cartridge is installed in place even easier. with the blow of a mallet on top, it sits tightly at the junction.
Users need to remember that removing a drill or other attachment when stuck in a chuck requires certain skills and the ability to handle locksmith tools, but in any case, you must dismantle the device. If the drill cartridge is out of order, then it must be replaced.