Build Daily


August 12, 2017 18:08

Instructions for disassembling the gun Hitachi DH24PC3


  • 1 Features perforator Hitachi
  • 2 order of dismantling of perforator Hitachi
    • 2.1 keyless chuck Disassembly Type SDS-plus
    • 2.2 Disassembling the three-position mode switch
    • 2.3 Dismantlinghousing
    • 2.4 Dismantling mechanical block
    • 2.5 Dismantling countershaft
    • 2.6 Removing the impact mechanism trunk
    • 2.7 impact mechanism Dismantling parts
    • 2.8 What types of bearings used in perforator Hitachi DH24PC3 andRussian analogues
  • 3 Dismantling electrical perforator Hitachi
    • 3.1 How to disconnect the rotor from the mechanical block
    • 3.2 Dismantling the stator
    • 3.3 control circuits Dismantling
    • 3.4 Video repair perforator Hitachi

Dismantling perforator Hitachi DH24PC3 is required when you want to repair the instrument with his own hands.But for that you need not only a detailed diagram of the perforator Hitachi, and instructions on its dismantling, lubrication and assembly.Dismantling
perforator Hitachi does not require special skills from the user, if he strictly follows the recommendations proposed for disassembly instructions.

Features perforator Hitachi

tri-mode hammer Hitschi DH24PC3 produced by Japanese manufacturers.The power of the punch is equal to 800 watts.In
punch provides for continuous adjustment 0 ... 1150 rev / min at a controlled frequency 0 ... 4600 strokes / min.
Shot Power equal to 3.2 J.
perforator Weight is 2.4 kg.
perforator Hitachi DH24PC3 equipped with a keyless chuck type SDS-plus.Hitachi Hammers are designed for drilling holes up to 24 mm in concrete in the drilling mode and impact.In
chipping hammer mode helps remove tile, Stroebe recess for cable, tubes communications.
The hammer drill mode allows you to drill holes in wood up to 32 mm, twist the screws using additional baits.
The punch provided reinstalling the front handle at any angle, which creates additional convenience in tight spaces.

order of dismantling of perforator Hitachi

To repair perforator Hitachi DH24PC3, it is necessary to perform a technological operation as dismantling tool.
Getting disassembly, prepare working place, pick up tools, reference material, documentation.
as workplace suitable flat surface, the laid paper or clean material.The place should be illuminated uniformly and fairly.From the Tools
prepare pliers, screwdrivers, pliers, screwdriver, vise.
as documents you will need to disassemble circuit lubrication diagram and the accompanying guide.

Driving perforator Hitachi DH24PC3

scheme perforator Hitachi DH24PC3

Dismantling perforator Hitachi DH24PC3 begins with the dismantling of the keyless chuck.

keyless chuck Disassembly Type SDS-plus

To disassemble the hammer, it is necessary to remove the keyless chuck:

    • Using a screwdriver, remove the protective rubber boot item 1;
    • Pull the retaining ring position 2;
    • Carefully remove the cover item 3;
    • Push the steel ring and the guide washer pos.4 pos.5, remove the locking ball poz.21;
    • Remove the steel ring, guide washer, conical spring pos.6;
    • Left to get the puck position 7 and the retaining ring position 8.

Keyless chuck dismantled.

The composition of the keyless chuck SDS-plus

scheme keyless chuck SDS-plus

Disassembling the three-position mode switch

Go to dismantle poz.20A mode switch.
First set the mode dial to "kick."By clicking poz.17, turn the knob counter-clockwise on the angle of 15º and out of engagement.

Video disassembly punch Hitachi DH24PS3

The next step in the dismantling of perforator Hitachi DH24PS3 housing should be removed, label the inscription.It is on the left side of the housing, when viewed from the side of the handle.
He removed with a screwdriver by poddevaniya.

Removal of the rating plate inscriptions ,

Removing nameplate, lettering


housing Proceed to disassemble the enclosure.
Install vertical body puncher, propped it on the handle.Using the screwdriver or a screwdriver to unscrew 4 screws pos.9.To remove the cover of the mechanical unit, it is necessary to press the lever in the opening shot of the mode switch and pull the cover up.
The cover of the mechanical unit is installed in between the aluminum body, which pressed the barrel and the firing mechanism.The body of the mechanical unit consists of two parts: internal aluminum and plastic outer.

Branch trunk lid unit from the stator housing

Separation from the stator housing lid of the barrel unit

Dismantling mechanical block

To disassemble the mechanical unit must perform several separate operations.
The first step is the dismantling of the intermediate shaft, and then removed the striking mechanism barrel and dismantled its individual components.

Dismantling countershaft

poz.47 intermediate shaft is inserted into the inner casing poz.39.For removing it enough to pull the shaft of the inner housing.

The shaft with the mode switch

intermediate shaft with switch mode

On the intermediate shaft collected several items, the most important of which is drunk bearing and mode switch.
Principle of simple punch.The torque is transmitted from the helical gear reducer (not shown) to the spur gear position 1, mounted on the intermediate shaft.

Widget from SocialMart
Node and transmit rotational torque reciprocating

Node transmitting rotary and reciprocating moment

Then the torque is transmitted through a small spur gear of the intermediate shaft to a large spur gear mounted on the shaft of the striking mechanism barrel.At the same time with the help of drunken bearing pos.2 reciprocating impulse is transmitted to the piston of the striking mechanism.pos.4 Mode switch using pos.3 coupling enables or disables the transmission of shock pulse or rotational movement.
To disassemble the intermediate shaft must be consistently remove the helical gear, roller bearing with the clutch mode switch.

Removing the impact mechanism trunk

striking mechanism stem shaft is molded in the plastic cover of the mechanical unit.To get poz.24 stem shaft, it is necessary to remove the lock ring pos.8 the outside cover of the mechanical unit.When the retaining ring is removed, you can proceed to the striking mechanism stem pressing out with the help of media or devices.
is not advisable to get the barrel by impact, so as not to damage the plastic casing perforator.
If not press, it will suit the big bench screw.But they need to make a simple adaptation of a hard material, such as wood.

Device for pulling out the gun barrel Hitachi DH24PC3

Device for pulling out the gun barrel Hitachi DH24PC3

new trunk to punch Hitachi DH24PC3 sold in assembled form.Although you can buy just the trunk, but in China.

New barrel assembly

new barrel assembly

impact mechanism Dismantling parts

to create a shock pulse in the trunk of the impact mechanism is inserted into the piston sleeve punch poz.39, which, in turn, is inserted into the firing pin and firing pin poz.29 shockpoz.37 mechanism.
In the tail of the sleeve piston fixed piston pin, which is inserted into the hole rod rolling bearing poz.53, called by the people "drunk bearing."

Details transmitting rotation and percussion

scheme perforator barrel Hitachi

Remember!When repairing all rubber components are replaced on a mandatory basis.

What types of bearings used in perforator Hitachi DH24PC3 and their Russian counterparts

The perforator Hitachi DH24PC3 applied following bearings made in Japan:

    • Poz.15 bearing 37 mm, article 6904DD, dimensions 20x37x9, the Russian equivalent of 1,000,904;
    • Poz.56 bearing 19 mm, article 626VVM, 6x19x6 dimensions, the Russian equivalent of 26;
    • Poz.60 bearing 22 mm, article 608DDM, 8x22x7 dimensions, the Russian equivalent of 80018;
    • Poz.66 bearing 22 mm, article 608VVM, 8x22x7 dimensions, the Russian equivalent of 60018;

Now you can proceed to the dismantling electrical perforator Hitachi DH24PC3.

Dismantling electrical perforator Hitachi

Dismantling the electrical part of the punch begins with the dismantling of the carbon brushes.
To get coal electro, it is necessary to reveal the gun handle, unscrewing the cap screws with a screwdriver or a screwdriver.

A method of extraction of carbon brushes

Extract the carbon brushes

hooked screwdriver latch, release carbon brushes poz.69, 72 with the help of pliers.

How to disconnect the rotor from the mechanical block

Picking the right hand of the mechanical part, and to the left of the stator housing, pull them in different directions, shaking.poz.62 rotor out of the stator housing.
Now take your left hand in the rotor itself, and gently pull it out of engagement with the mechanical part of the gun.The rotor is held in the mechanical part of the gun by friction in helical gears.

Rotor perforator Hitachi DH24PC3

rotor perforator Hitachi DH24PC3

stator Disassembly

To remove the stator poz.65, it is necessary to remove the plastic cover and unscrew the screws poz.63 poz.64 holding the stator housing.Do not forget to disconnect the stator wires from the switch.
to remove the stator from the body take in the left hand of the stator housing, and the right hand of the mallet or a bar and tap the end of the housing.Each stator is slowly tapped out of the housing.Read how to check the serviceability of the stator and rotor.

control circuits Dismantling

To remove the switch from the speed controller, you simply remove it from the body handle perforator Hitachi DH24PC3.
The punch used poz.70V switch button 220 B, type OLD331454 / 324536.The carbon brushes are kept in special poz.74 poz.75 brush holders.

Completing the gun control circuit Hitachi DH24PC3

Driving punch control circuit Hitachi DH24PC3

Video Repair perforator Hitachi