How To Repair The Interskol Perforator With Your Own Hands, Video And Photo

2023 Author: Philip Bishop | [email protected]. Last modified: 2023-08-25 07:54

• Classification of malfunctions in Interskol perforators
• Mechanical group of faults in Interskol rock drills
• Worn rubber sealing rings
• Destruction of strikers, strikers, barrels, pistons
• Destruction of the rolling bearing
• Turning the gear on the barrel
• Intermediate shaft malfunctions
• Impossibility of fixing the working tool in the keyless chuck
• Mode switch malfunctions
• Malfunctions in the electrical part of Interskol perforators
• Interskol perforator repair video
• Repair of perforator Interskol P-30 / 900ER

Perforators Interskol, according to statistics, are reliable tools. Failures are recorded much less often than in 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 purpose in accordance with the requirements for operation allows Interskol perforators to work for a long time.

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

To repair Interskol perforators, to eliminate malfunctions, it is necessary to carefully study the device of the tool, its diagram, lubrication cards.

Any repair of the Interskol perforator begins with its disassembly in more detail.

Classification of malfunctions in Interskol perforators

Interskol rock drills have high maintainability, simplicity and reliability.

Do-it-yourself Interskol hammer drill repair can be performed by any user who knows how to hold a screwdriver, a hammer and who is versed in electrical engineering at the high school level.

All malfunctions occurring in Interskol perforators are conventionally divided into three groups:

• Mechanical breakdown of the striking mechanism;
• Destruction of the mode switch;
• Malfunction of the electrical part of the hammer drill.

Mechanical group of faults in Interskol rock drills

Let's consider all the faults on the example of the Interskol P-26 / 800ER perforator.

The first group of faults includes breakdowns associated with the failure of parts of the percussion mechanism.

This group of malfunctions is manifested in the fact that during operation the hammer drill drills but cannot hammer.

Worn rubber sealing rings

The weakening of the impact force occurs gradually. As the rubber rings wear out, air leaks into the pneumatic impact system. The force of the blow weakens, the blow becomes hard. In addition to the loss of pneumatic properties, the destruction of strikers, strikers, and press masses occurs.

Repair of the Interskol perforator in case of wear of the O-rings is to replace them with new ones.

The installation of new rubber rings is carried out at any disassembly of the perforator with the obligatory application of lubrication of the O-rings with lubricants inert to rubber products. Such greases include the domestic grease of the Tsiatim-224 type, produced in accordance with GOST 9433-80.

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

Destruction of strikers, strikers, barrels, pistons

If the rubber sealing rings are very worn out and if they are not replaced in time, the press mass, pos. 16, the barrel, pos. 36, the body of the safety device, pos. 40, and the striker, pos. 45, are destroyed. From the impact on the parts, work hardening, cracks, curvatures, jamming appear.

Malfunctions are eliminated by replacing parts with new ones with a mandatory change of seals.

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

• The piston skirt collapses;
• The ears of the installation of the finger, pos. 48, are broken off.

Repair of the Interskol P-26 / 800ER perforator 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 must be finished to a mirror finish.

Failure of the barrel pos. 36 does not appear often. The main reason is scratches on the inner surface when strikers, strikers, industrial mass fail.

If the depth of the scratches is not large, then the scratches can be removed by grinding. With a large depth of scratches, it is impossible to ensure tightness, and this affects the operation of the punch in the "Impact" mode.

Destruction of the rolling bearing

The shock pulse is created not only by the pneumatic system of the percussion mechanism, but also by converting the rotational motion into reciprocating motion due to the operation of the rolling bearing pos.60. There are cases of destruction of the bearing race.

When a rolling bearing is destroyed, the repair of the Interskol P-26 / 800ER perforator consists in a complete replacement of the part.

Violation of the transfer of torque to reciprocating can be interrupted due to slipping of the splines of the gear combined gear wheel pos. 62 in the splines of the rolling bearing pos. 60.

The malfunction is eliminated by correcting the tooth profile with a round file.

The disappearance of the impact mode is manifested when the mode switch is not working properly. Moving the mode switch knob does not move the switch leash, pos. 55.

The breakage is eliminated by correcting the assembly of the intermediate gear shaft pos. 58.

A group of faults in which the hammer hammer chisels, but does not drill.

Turning the gear on the barrel

Loss of drilling with a running impact is manifested when turning on the barrel shaft pos. 36 gears pos. 35.

The gear is fixed on the barrel by three rollers pos. 37. And to keep it securely, the gear is pressed down by the spring pos. 33, which is fixed through the washer pos. 32 with the locking ring pos. 31.

The malfunction appears due to the weakening of the pressure spring force, the falling out of the rollers, the destruction of the cam sleeve pos. 38.

Do-it-yourself repair of the Interskol P-26 / 800ER perforator consists in restoring all parts to the required position or replacing those that have failed.

Intermediate shaft malfunctions

The intermediate shaft in the hammer drill is used to transmit rotational and reciprocating impulses.

If any part installed on the intermediate shaft begins to turn due to breakdowns, the hammer drill stops drilling.

Let's consider the principle of operation of the intermediate shaft of the Interskol P-18 / 450ER perforator.

Rotation is transmitted to the shaft by means of gear pos. 46, which is turned by the rotary hammer rotor. The gear is put on the shaft, pos. 43, where the cam coupling half, pos. 44, and the rolling bearing, pos. 45, are attached.

The impact mode is switched on by moving the switch bar, pos. 55, which disengages the rolling bearing from the cam half-coupling, pos. 44.

At the intermediate shaft of the Interskol P-26 / 800ER perforator, a combined gear wheel pos. 62 can be rotated.

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

The malfunction is eliminated by restoring the tooth profile in the combined gear, in a drunken bearing.

The design of the intermediate shaft of the Interskol P600ER perforator is distinguished by the presence of a common shaft pos. 39.

Slipping of the gear wheel pos. 45 on the shaft can occur due to the weakening of the pressure spring pos. 38 and wear of the tooth in the connector pos. 40, which acts as a clutch.

Impossibility of fixing the working tool in the keyless chuck

Sometimes a malfunction occurs, which manifests itself in the impossibility of fixing the working body in the keyless chuck.

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

Clamping of the shanks of the working tool is provided by their special design.

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

Repair of the Interskol perforator, and specifically its keyless chuck, consists in replacing the balls and lubricating the drill shanks with special grease. It is recommended to use a specially formulated ointment as a lubricant for drill shanks.

Mode switch malfunctions

Interskol perforators are equipped with mode switches of various designs. And this is no accident.

Often, users switch the hammer operation mode without stopping the tool. And this is the main reason for the breakdown of the mode switch in rotary hammers.

Interskol perforators mode switch includes a different number of parts.

The mode switch of the Interskol P-18 / 450ER perforator is distinguished by a certain complexity.

Mode switching is carried out by transferring the cam coupling half pos. 44 out of engagement with the pinion shaft pos. 43.

The translation is carried out using the mode switching bracket, pos. 52, the switch bar, pos. 55, and the switch knob, pos. 16.

Malfunctions are manifested in the inability to transfer the switch to the desired mode.

The malfunction is eliminated by replacing the spring pos. 48, aligning or replacing bent parts.

The complex design of the mode switch of the Interskol P-18 / 450ER perforator forced the developers to design a new scheme and implement it in the Interskol P-26 / 800ER perforator.

Modes are switched by means of the switch leash, pos. 55, the spring, pos. 56, and the switch knob, pos. 28.

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

The Interskol P600ER perforator uses a slightly different design of the mode switch.

Modes are switched by removing the clutch (pos. 40) from the rolling bearing (pos. 41).

Malfunctions in the electrical part of Interskol perforators

The electrical part of Interskol rock drills is highly reliable and practically does not cause trouble for the user.

The main thing is to timely monitor the wear of carbon electric brushes.

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

Replacing carbon brushes is not difficult and can be done by any user.

The cover of the hand of the case is removed, the brush holder is released in those designs in which the electric brushes are provided and taken out.

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

Carbon brushes pos. 72 are installed in the brush holder pos. 73. to get the brushes, you need to remove the handle-cover pos. 78. turn the brush holder 45 degrees and remove it. By releasing the springs of pos. 71, you can easily get out the carbon brushes.

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

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

The rest of the parts, such as buttons for turning off position 74 of the tool, capacitors of position 75, chokes of position 76 fail very rarely and their replacement does not cause any particular difficulties.

We examined the main malfunctions of Interskol perforators. If you have materials about other malfunctions, write to us.

Conclusions:

• repair of the Interskol perforator is not a difficult task and can be performed by any user who is familiar with the instructions for disassembly and assembly;
• timely replacement of O-rings prevents the appearance of the main number of incorrigibles;
• timely replaced carbon brushes allow to operate Interskol perforators almost indefinitely

Success to everyone!

Interskol perforator repair video

Repair of perforator Interskol P-30 / 900ER

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