Build Daily


August 12, 2017 18:08

How to assemble the gun Makita


  • 1 order of assembly punch Makita 2450
  • 2 Set the mode switch lever
  • 3 assembly shaft impact mechanism
  • 4 installation of electrical brushes

to the assembly of any mechanismshould be initiated after careful preparation.It is necessary to prepare not only parts, but also the tools, place a lubricant.

From tools can not do without a pair of pliers, screwdrivers, a hammer, a brush for applying a lubricant.

And what is the punch assembly diagram Makita 2450 and 2470?

Assembly Makita rotary hammer with his hands can only be made subject to the instructions.

task of the assembly process is the replacement of defective parts emerged on the fit and ensure interoperability and performance tool.

order of assembly punch Makita 2450

Assembly of impactor
And how to collect punch Makita hammer mechanism?
firing mechanism is assembled from two components: the barrel with a spur pinion shaft and intermediate shaft with rolling bearing.
Details of the impact mechanism
A).On the trunk poz.21 spur gear is w

orn and pressed poz.19 compression spring poz.18.
for fixing the spring washer 30 presses poz.17 and fixed a locking ring 28, pos.16.
the firing pin assembly
B).To assemble the striker should be put on the ring on the shaft 9 poz.25 striker, pull the rubber ring poz.26, flatten metal ring poz.27.

Now go to the opposite side of the trunk poz.21.On the other hand the inner surface of the barrel should be lubricated with grease and insert into the assembled drummer poz24.

The assembly of the intermediate shaft and the piston

Assembling the intermediate shaft and the piston

Assembling the countershaft


intermediate shaft

To assemble the intermediate shaft is necessary rolling bearing poz.41 wear on the shaft poz.40 teeth to the shaft splines on Slotsshaft wear sleeve poz.39.

The transfer of translational motion

Transfer translational motion

On the opposite side of the shaft fits helical gear 26 poz.42., Flat washer 8 poz.45, bearing 608zz poz.46 and retaining ring 8 poz.47.
intermediate shaft is assembled.

Assembling the gearbox
mounting gear unit is made on the domestic poz.49 housing.

inner case

inner housing

By the way, there are cases where the axis jump out of an inner aluminum body.The body axis both are pressed.

housing inner
In poz.49 assembled body is inserted into the intermediate shaft, the roller bearing lever which is to get into the cylinder bore of the hinge.
cylinder assembly and roller bearing of the intermediate shaft
In this rolling bearing poz.41 intermediate shaft lever must get into poz.32 barrel hinge and the lower bearing of the intermediate shaft into the slot in the housing.This procedure is usually carried out by swinging the design to full contact details in the mentioned places.

Set the mode switch lever

switch modes for the translation poz.39 clutch in different positions and the transfer of translational motion on the shaft impact mechanism through the rolling bearing to the cylinder poz.41 poz.32.

Build mode switch lever punch Makita 2450

On the axis of the inner shell is necessary to put the lever poz.82 mode dial on top poddavlivat spring poz.88, crush flat washer poz.87.Install retaining ring poz.86.and secure.

locking lips ringlet

Retaining ring it is necessary to carefully fix.
turning the intermediate shaft, it is necessary to carefully check the correct operation and the free stroke of the cylinder in the housing.This must be done now to build not revealed by the end of that unit is assembled correctly.

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assembly shaft impact mechanism

First you have to grease the inside of the cylinder poz.32 and insert the striker poz.30.

the firing pin is inserted

remains in the inner housing poz.49 put oiled barrel assembly poz.21 in place, putting it on the oiled cylinder poz.32.
as lubricants recommended special lubricant designed for rotary hammers Makita.
Lubricants produced several kinds: Makita P-08361 and Makita 183477-5 SDS-PLUS.
Grease Makita 183477-5 SDS-PLUS is recommended for gear.For shank drills used lubricant brand Makita 196804-7.

Lubricants vary in color, but they have exactly the same characteristics.
And what lubricant used in the punch Makita 2450 and 2470?

And here in front of us assembled mechanical unit.Video
total disassembly and assembly punch Makita 2450

sure it is working by turning the intermediate shaft and controlling the movement of the piston in the hammer mechanism.All!

smazhem now all part of the mechanical unit of the recommended grease.Here is an example of proper lubrication on the rotating surface.
proper lubrication
And here's another example of the generous lubrication of the mechanical unit.

Porridge oil will not spoil

Porridge oil will not spoil

So, too, are allowed to apply grease.Porridge oil will not spoil!

lubricate the mechanical unit it is necessary to close the plastic housing pos.14 black.
Imposing body on top of the unit, press down the body to the full assembly of fixing it.
backwardness insert four bolts position 10 into the housing and tighten.
mount enclosures punch
Now came the turn of accession to the mechanical part of the motor rotor.

Installation of the rotor

rotor Installation

Helical rotor gear tightly inserted into the housing unit and mechanical presses.

768b ~ 1
remains to insert the four self-tapping screw M4 × 60 poz.57.and screw them into the body for electrical installation.

attaching the stator housing

installation of electrical brushes

Remove dirt from the grooves of the brush holder and brush set in place by fixing their snaps.

0ts6s ~ 1

Now is the time to test the functionality of the gun.Connect the plug to the outlet punch, turn briefly punch in "drilling" mode.Convinced of the instrument performance, turn it off.Put the mode switch to "blow."The tool does not insert.Check
perforator performance in this position.At the same time you checked and the operating mode switch.

remains to check stacking the Inverter speed button, make sure the reliability of contact connections, and you are ready to install the cover.

Installing the cover

Installation cover

cover is secured by three self-tapping screws Mx4 different lengths.

Connect punch to the network 220 and check for all modes.
Hammer Makita 2450 or 2470 assembled and working properly!