Perforators Interskol - malfunctions and ways of elimination by the hands

Hammers Interskol, according to statistics, are reliable tools. Failures are recorded much less frequently than the more popular models Makita, Bosch, Hitachi.

The main rule: choose a model that is designed for loads and is designed to perform the planned work.

The use of perforators for their intended use in accordance with the operating requirements allows the Interskork perforators to be operated for a long time.

But, like any tool, various malfunctions appear in the punchers, which will require repairing the puncher yourself, especially if it is no longer warranted.

In order to repair the guns of Interskol, troubleshooting, it is necessary to carefully study the device of the instrument, its circuit, lubrication cards.
Any repair of the perforator Interskol begins with its disassembly of this in more detail.

Classification of malfunctions in perforators Interskol

Perforators Interskol have high maintainability, simplicity and reliability.

Repair of perforators Interskol own hands can perform any user who knows how to hold a screwdriver, a hammer and an electrical engineer at the high school level.

All the appearing malfunctions in the perforators of Interskol are conventionally divided into three groups:

• Mechanical breakdown of the impact mechanism;
• Failure modes switch;
• Malfunctions of the electric part of the perforator.

Mechanical group of malfunctions in perforators Interskol

Let's consider all malfunctions on an example of perforator Interskol P-26 / 800EP.

The first group of faults include breakdowns associated with the failure of the components of the impactor.

This group of faults is manifested in the fact that when the is working, the perforator drills, but can not be punched.

Wear of sealing rubber rings

The weakening of the impact force is gradual. As the rubber rings wear out, air leakage occurs in the pneumatic impact system. The impact strength is weakened, the blow becomes hard. In addition to the loss of pneumatic properties, the impactors, strikers, press maces are destroyed.

Repair of the perforator Interskol with the wear of sealing rings is to replace them with new ones.

The installation of new rubber rings is made at any disassembly of the puncher with mandatory lubrication of sealing rings with lubricants that are inert to rubber products. Such lubricants include domestic lubricant type Tsiatim-224, produced in accordance with GOST 9433-80.

The rubber sealing ring is lubricated with a thin layer of Ciatim-224 grease and put on the desired part, previously washed from the old grease in a solution of a mixture of kerosene and gasoline.

Destruction of strikers, drums, trunks, pistons

With a large deterioration of the rubber sealing rings and untimely replacement of them, the press molding poses 16, the barrel of pos. 36, the catcher body pos. 40, the striker poses. From the impact on the details there is work hardening, cracks, curving, jamming.

Faults are eliminated by replacing parts with new ones, with obligatory replacement of seals.

The destruction of the piston pos 47 is of two types:

• The piston skirt is destroyed;
• The ears of the finger installation are punctured pos.48.

Repair of the perforator Interskol P-26 / 800EP and its destroyed piston is performed by replacing the piston with a new one. When purchasing a piston, carefully check the roughness of the inner surface of the piston. It should be brought to a mirror shine.

Failure of the barrel pos.36 is not often manifested. The main reason is scratches on the inner surface when the impactors, strikers, prommasses fail.

If the depth of scratches is not large, then scratches can be taken out with a lap. With a large depth of scratches, it is impossible to ensure a tightness, and this affects the operation of the perforator in the "Strike" mode.

Rolling bearing destruction

The impact pulse is generated not only by the pneumatic system of the impactor, but also by the conversion of the rotary motion into a reciprocating motion due to the operation of the rolling bearing pos. 60.There are cases of destruction of a holder of the bearing.

When the rolling-contact bearing is damaged, the repair of the Interskol P-26 / 800EP perforator is a complete replacement of the part.

The impairment of the transfer of torque to reciprocating can be interrupted due to the slippage of the slots of the gear combination gear 62 in the raceways of the rolling bearing pos. 60.

The fault is fixed by by correcting the profile of the tooth with the help of a round nail file.

The impact mode is affected if the mode switch is not operating correctly. The translation of the mode switch knob does not move the switch lead pos.55.

The failure is eliminated by repairing the intermediate shaft gear assembly pos. 58.

A group of faults in which the puncher chops, but does not drill .

Turning the pinion on the barrel

The drilling is lost when the impact is active when turning the pin of pos. 36 of pos. 35 on the shaft of the barrel.

The gear is fixed on the barrel with three rollers pos.37.And in order to keep it firmly, the pinion is pressed by the spring of pos.33, which is fixed through the washer in pos. 32 by a retaining ring pos.31.

The malfunction occurs due to the weakening of the force of the clamping spring, the falling out of the rollers, the destruction of the hub of the cam pos.

Repair of the perforator Interskol P-26 / 800EP with its own hands consists in restoring all the parts to the required position or replacing the failed ones.

Intermediate Shaft Faults

The intermediate shaft in the rotary hammer serves to transfer the rotational and reciprocating impulses.

If any part installed on the intermediate shaft, because of breakages will start to rotate, the puncher stops drilling.

Consider the principle of the intermediate shaft of the perforator P-18 / 450EP.

Rotation to the shaft is transmitted by means of a gear, pos. 46, rotated by the rotor of a rotary hammer. The gear is put on the shaft pos. 43, where the camshaft half-clutch pos.44 and the rolling bearing pos.

Activation of the impact mode occurs due to the displacement of the switch plate pos.55, which disengages the rolling element bearing from the half-coupling of the cam pos.

At the intermediate shaft of the perforator Interskol P-26 / 800EP can turn the gear combination gear pos 62.

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The fact is that the wheel rotates due to the tooth engagement in the clutch of a drunken bearing. The rotation can occur due to the weakening of the spring pos. 63 and the wear of the tooth profile, like the gear, and the clutch.

The fault is eliminated by restoring the tooth profile in the combination gear, in a drunken bearing.

The design of the intermediate shaft of the perforator Interskol P600EP differs by the presence of a common shaft pos.39.

Slippage of pinion pos.45 on the shaft can occur due to the weakening of the pressure spring pos.38 and tooth wear in the connector pos.40, acting as a clutch.

Failure to secure the work tool in the

quick-action chuck There is sometimes a malfunction, which is manifested in the impossibility of fixing the workpiece in the quick-action chuck.

Perforators Interskol equipped with cartridges of two types: SDS-plus and SDS-max.

The clamping of the shanks of the working tool is ensured by their special design.

Failure of the clamping device is due to wear of the locking ball.

Repair of Perskrorator Interskol, and specifically of its quick-action chuck, is to replace the balls and lubricate the drill liners with special grease. It is recommended to use specially developed ointment as a lubricant for shanks of drills.

Malfunction of the mode switch

Perforators Interskol are equipped with mode switches of various designs. And it's no accident.

Often users switch the operating mode of the punch without stopping the tool. And this is the main reason for the failure of the mode switch in the perforators.

The Interscope Rotary Mode Switch has a different number of parts.

Difficulty differs the switch mode puncher Interskol P-18 / 450EP.

The switching of the modes is carried out due to the transfer of the half-coupling of the cam pos. 44 from the gearing with pinion shaft pos.43.

Transfer is carried out with the help of the mode switching bracket pos.52, the switch strip pos.55, the switch knob pos.16.

The malfunction results in the inability to switch the switch to the desired mode.

The fault is removed by replacing the spring in pos. 48, aligning or replacing the bent parts.

The complicated design of the perforator mode switch P-18 / 450EP Interpol forced the designers to design a new circuit and to implement it in the Interskol P-26 / 800EP perforator.

Switching the modes is carried out by means of the lead of the switch pos.55, springs pos.56 and the handle of the switch pos.28.

The design uses the smallest number of parts, which increases the reliability and performance of the Interskol P-28 / 800ER perforator.

In the perforator Interskol P600EP a slightly different design of the mode switch is used.

Switching of the modes is carried out with the help of the clutch release pos.40 from the rolling bearing pos.41.

Malfunctions in the electrical circuit of the perforators Interskol

The electrical part of the perforators Interskol has high reliability and practically does not cause trouble to the user.

The main thing is to monitor the wear and tear of the electric brush in good time.

You should be aware that when the brushes are worn to a length of less than 8 mm, the brushes must be replaced.

Replacement of carbon brushes is a simple procedure and can be performed by any user.

The cover of the body arm is removed, the brush holder is released in the structures in which the electric brush is provided and received.

For example, consider the replacement of electric brushes in the perforator of Interskol P-30 / 900EP.

Carbon brushes pos.72 are installed in the brush holder pos.73.To get the brushes, you need to remove the handle-pad pos.78.rotate the brush holder 45 degrees and remove it. Having released the springs pos.71, you will easily get the carbon brushes.

stator pos.66, the rotor pos.62 fail very rarely.

For those who wish to perform stator or rotor repair with their own hands answer here .

The rest of the details, such as the turn-off buttons for tool pos. 74, capacitors pos. 75, the chokes pos. 76 fail very rarely and their replacement does not cause any special difficulties.

We examined the basic malfunctions of the perforators Interskol. If you have materials about other problems, write to us.
Conclusion:

• perforator repair Interskol is not a difficult task and can be performed by any user familiar with the disassembly and assembly instruction;
• timely replacement of sealing rings prevents occurrence of the basic quantity of incorruptibility;
• in time replaced carbon brushes allow to operate perforators Interskol practically infinitely

All successes!

Puncher repair video Interskol

Repair of perforator Interskol P-30 / 900EP