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August 12, 2017 18:08

disassembly punch Bosch Guide


  • 1 order of dismantling of perforator Bosch 2-26
    • 1.1 Dismantling quick chuck
    • 1.2 Removing mode switch
    • 1.3 percussion mechanism assembly Disassemble
      • 1.3.1 Dismantling site impact mechanism
      • 1.3.2 cylinder Dismantling
      • 1.3.3 Dismantling the intermediate shaft barrel
  • 2 uncharacteristic fault perforator Bosch
    • 2.1 Bosch Hammer drills, but not hammer
  • 3 Dismantling electrical perforator Bosch 2-26

operating principle of the perforator Bosch 2-26 can not be distinguished from the drills brands.
rotating rotor transfers torque to countershaft mechanical assembly punch, while passing through the forward movement of the rolling bearing on the impact mechanism punch and kick pulse.On a working tool torque is transmitted to the translational shock pulse.This principle is implemented in all rotary hammers.

But different companies producing hammers, have their own design features.

Hammers Bosch are among the best in the segment of power tools.But there is noth

ing eternal.

If your hammer Bosch 2-20, 2-24, 2-26 stopped working, then it can be restored with his own hands.It is necessary to have the elementary skills of a locksmith and a little understanding of the electrical engineering.
And another important detail, Bosch rotary hammers design is so simple that does not cause difficulties in the repair.

when repairing power tools, including repair of the Bosch drills, obey all safety precautions when working with electrical appliances.

To facilitate the Bosch rotary hammer repair, disassembly and assembly circuit assembly study tool:

Driving perforator Bosch 2-26

scheme perforator Bosch 2-26

Any dismantling of perforator bosch 2-26 begin after the inspection,trial inclusion and identify the causes of device malfunction.

Video disassembling the gun Bosch 2-26

order of dismantling of perforator Bosch 2-26

Since the order of disassembly drills Bosch 2-20;2-24;2-26 is practically the same, look at the sequence of dismantling the example of punch Bosch 2-26.

Dismantling perforator Bosch GBH 2-26 dre begins with the quick disassembly of the cartridge.

Dismantling quick chuck

The Bosch rotary hammers commonly used two kinds of cartridges: Cartridges SDS-plus and SDS-max ammo.The difference in principle between them clamp the tail part functioning organ.

punch holder device differs structure Bosch number of rods in the tool according to SDS-plus or SDS-max model.In addition to these types of ammunition cartridges found SDS-top, SDS-quick.

The difference between the nodes cartridges fixing

difference between nodes mounting cartridges

order of dismantling of perforator Bosch cartridge 2-26 simple:

  • remove the rubber tip poz.34;
  • remove the lock ring poz.87;
  • remove the steel washer poz.833;
  • remove conical spring poz.833;
  • carefully so as not to lose by using a magnet, remove bochonochnye poz.89 balls.

Chuck SDS-plus

chuck SDS-plus

Carefully inspect all parts of the cartridge.

Keyless chuck SDS-plus exploded

Bystrorazzhimnoy chuck SDS-plus exploded

Sockets SDS-plus were developed specifically to tools for drilling.The diameter of the tool shank is 10 mm, the working length of the instrument in the range of 110 ... 1000 mm.Boers diameter is in the range of 4 ... 26 mm.

Removing mode switch

Placing hammer on one side, remove poz.832 mode switch.

First, turn the switch to the "Drilling", press with a screwdriver up to the stop in the end of the toggle button (it is red) and turn the knob counterclockwise by an angle 70ยบ.

Shaking switch knob, pull out the knob of the body.

percussion mechanism assembly Disassemble

putting perforator Bosch 2-26 upright on the handle, remove the four screws poz.90 holding the cover of the mechanical assembly housing.

Click on impact mechanism shaft end and remove the cover.Black plastic cover.

Now you have to remove the barrel and the intermediate shaft poz.821 poz.826.They are nothing more than not fixed.

Then using a screwdriver is necessary to remove the bracket poz.48 rolling bearing poz.830.By the way, in a simple way, he is called "drunken bearing."Sequentially shot: poz.26 sleeve and "drunken bearing."

We got to the drunken bearing

got to drunken bearing

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striking mechanism stem Disassembly

  • disassembly assembly barrel Hammers Bosch start from the cavity, takingfrom her cylinder poz.26 with drummer poz.27;
  • from the cavity it is necessary to control the firing pin assembly;
  • from the chuck shaft, remove the retaining ring poz.85, steel ring poz.38 and another retaining ring poz.85;
  • remove spur gear poz.22.
percussion mechanism assembly , the intermediate shaft bearing and drunk

Node impact mechanism, the intermediate shaft bearing and drunk

cylinder Dismantling

Inside the cylinder is inserted poz.27 drummer, with whom it is necessary to remove the rubber ring poz.73.When any disassembly of the rubber parts must be replaced without fail.

At the opposite end of the cylinder is inserted into the hinge poz.29 and two flat washers poz.41.

Dismantling countershaft

intermediate shaft disassembled removing poz.24 shaft and haul out the body poz.77 "drunken bearing."

bearings removed removers or manually, using the tool.

uncharacteristic fault perforator Bosch

Hammers Bosch very reliable.But there are faults occurring virtually no practice.Below is one of them.

Bosch Hammer drills, but not hammer

If puncher stopped to peck, but it allows you to drill, the most likely cause of the destruction can be "drunken bearing."This fault does not occur often, and find it is not easy.

To eliminate it is not necessary to go to a repair shop.This will eliminate the problem any more or less versed in the mechanics of a person.

New drunken bearing

New drunken bearing

First, you need to disassemble the Bosch rotary hammer to an intermediate shaft.Disassembly Procedure given above.

Removing the intermediate shaft, you get to the "drunken bearing."Destruction of rolling bearing cage indicates broken, scattered beads, pieces of the cage.

took out the bearing, remove the dirt, all the pieces of the destroyed mechanism.

buy a new "drunk bearing", and, brushing all the details of the new grease Replace and assembly in the reverse steps of disassembly.

Dismantling electrical perforator Bosch 2-26

Dismantling perforator Bosch 2-26, its electrical parts, begins with the removal of the back cover on the handle of the gun by removing the three screws.

The next step is to take out the reverse switch.

Turn it to the neutral position and lift themselves.reverse switch is removed.

To remove the stator cover is necessary, holding in his right hand a mechanical unit, and to the left of the stator housing, drag them in different directions, shaking.

stator cover separated.

Separation of the hitting unit and the rotor with the stator

Separation impact unit with the rotor and the stator

For rotor separated from the mechanical assembly is enough to drag in different directions these parts.The rotor is mounted in the mechanical assembly of small spur gear inserted in contact with the large spur gear mechanical assembly.

rotor is released and can carefully examine the state of the reservoir, bearings.

Rotor punch bosch

perforator rotor bosch

To remove the stator, is enough to remove the protective plastic protective cover and knock the wooden blocks or mallet on the end of the housing in which the stator is inserted.Prior to this, be sure to remove the two screws holding the stator housing.

stator is removed, the rotor got, can overstep their inspection and fault detection of all the details that make up the electrical part of Bosch rotary hammer.

When viewed disassembled the gun Bosch 2-26 pay attention to the state of the carbon brushes, brush holders and the fly on the reliability of their attachment, the integrity of the reverse switch contacts of the wires in place at the entrance to the punch.

brush length should not be less than 8 mm.In the brush holders should be no traces of coal dust and sparks from the brushes on the switch contacts reverse punch Bosch 2-26 should not be burnouts or damage contacts.

Electrical Hammers Bosch

Electrical punch Bosch

This demolition was over.

Good luck to you!