Dismantling the keyless chuck
Consider disassembling a keyless chuck using the example of Interskol P-26 / 800ER perforator.
I installed the perforator on the back of the handle, it is necessary to remove the protective sleeve, pos. 1, remove the washer, pos. 2, and take out the locking ring, pos. 3.
Mechanical group of faults in Interskol rock drills
Consider all the faults using 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 can be drilled, but it cannot be hollowed.
Mode switch malfunctions
Interskol perforators are equipped with mode switches of various designs. And this is no accident.
Often, users switch the hammer mode rather than 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.
Punch mode switch Interskol P-18 / 450ER
Modes are switched 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 strip, pos. 55, 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.
Punch mode switch Interskol P-26 / 800ER
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.
A slightly different design of the mode switch is used in the Interskol P600ER perforator.
Mode switch perforator Interskol P-600ER
Modes are switched by moving the clutch, pos. 40, from the rolling bearing, pos. 41.
How to Disassemble Perforator Interskol P 24 700ER
Interskol P-24 / 700ER perforator disassembly review // how to disassemble the perforator // KOMMENTARE 51 how to remove the beating on the cartridge in this matter perforator? In spinning mode. The beating is NOT noticeable, but considerable in the drill mode. What cartridges are suitable for it from other models of rotary hammers? I bought a similar one for myself, rumors of greater power. It was embarrassing that during work [.]
Perforators Interskol, according to statistics, are reliable tools. Failures are recorded much less frequently 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 rock drills for their intended purpose in accordance with the operational requirements allows you to work with Interskol rock drills for a long time.
But, like any tool, various malfunctions appear in the punchers, which will require you to repair 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.
Design features of the keyless chuck type SDS-plus
Let’s start with the differences in the design of the keyless chuck mount.
The principle of disassembling keyless chucks is practically the same for all rotary hammers.
Interskol rock drills use a keyless chuck type SDS-plus. To work with the Interskol perforator, it is necessary to use a tool with an SDS-plus shank.
Destruction of the rolling bearing
The shock impulse is created not only by the pneumatic system of the percussion mechanism, but also by the conversion of rotary motion into reciprocating motion due to the operation of the rolling bearing pos.60. There are cases of destruction of the bearing race.
If the 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 Needle file.
Loss of 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 a hammer drill chisels, but does not drill.
Dismantling of the percussion mechanism of the Interskol P710ER perforator
The design of the percussion mechanism and the procedure for disassembly in the Interskol 710ЭР perforator is somewhat different from the second model perforators.
Major differences in the design of the countershaft, hammer barrel and mode switch.
Diagram of the percussion mechanism and the intermediate shaft of the perforator Interskol P710ER
The Interskol 710ER perforator is a rotary percussion machine. Consists of an electric drive and an executive mechanism. A collector motor is used as an electric drive. The actuator is a combination of a compression-vacuum type impact mechanism and a rotary mechanism. The reciprocating motion is transmitted through the rolling bearing.
The diagram shows the procedure for disassembling the barrel, pos. 15 (indicated by a red arrow), the composition of strikers and strikers (indicated by a blue arrow). The green arrow indicates the details of the mode switch.
The intermediate shaft consists of a shaft pos. 47 and parts mounted on it. It can be easily disassembled, according to the attached diagram, does not require special knowledge.
Dismantling the barrel of the percussion mechanism
The barrel of pos. 36 is removed from the inner housing of pos. 18 after the gear housing is separated from the stator housing. To do this, it is necessary to unscrew four screws pos. 30 from the gearbox housing.
Then unscrew the three screws, pos. 85, on the handle, pos. 86. Removing the handle, return the body of the brush holder pos. 81. Until the moment when it can be pulled out of the case.
Now the gearbox housing and the stator housing can be easily separated using a screwdriver, which pushes one of them at the docking point.
The barrel can be easily removed from the box pos. 53 (inner body).
On the outer diameter of the barrel put on: spur gear pos. 35, spring pos. 33, washer pos. 32 and retaining ring pos. 31.
In the barrel cavity there is a catcher body pos. 40, firing pin 45.
Disassembly catchers, strikers
Dismantling the safety catcher pos. 40 consists in separating from it the shock absorber pos. 41, the striker catcher pos. 42, the safety catcher cover pos. 43 and the retaining ring pos. 44.
A firing pin pos. 45 is inserted into the piston pos. 47, which must be removed.
From the striker, pos. 45, the O-ring, pos. 46, is removed.
From the ears of the piston pos. 47 it is necessary to separate the pin pos. 48 and remove the two rings pos. 49.
Disassembling the instrument receiver
The tool receiver, pos. 12, is disassembled after removing the parts from it with a keyless chuck.
At the first stage, four rollers, pos. 11, are carefully removed. Further, the receiver is removed from the body, pos. 18, in which the needle bearing, pos. 20, is inserted.
In the needle bearing, the barrel pos. 36 is attached.
Remove the tool receiver from the barrel.
From the tool receiver, it is necessary to remove the industrial mass pos. 16, the bushing pos. 15, the collar pos. 14 and the rubber sealing ring pos. 13.
Dismantling the block of the percussion mechanism of the perforator Interskol P26 / 800ER
Most of the differences are in the design of the striking mechanism.
The impact mechanism consists of several units:
- Impact mechanism barrel;
- Intermediate shaft;
- Fighters and drummers;
- Piston liner;
- Friction bearing.
The percussion mechanism in Interskol perforators works on the same principle. Differences in design features.
Design features of the keyless chuck type SDS-plus
Let’s start with the differences in the design of the keyless chuck mount.
The principle of disassembling keyless chucks is practically the same for all rotary hammers.
Interskol rock drills use a keyless chuck type SDS-plus. To work with the Interskol perforator, it is necessary to use a tool with an SDS-plus shank.