Revive the Makita 454 electric drill, rewind the motor and repair multiple faults

Makita 454 heavy-duty lithium electric drill, multiple failure points,
1. The carbon brush is disconnected and the carbon brush is stuck
2. The rotor is broken
3. The stator silicon steel sheet falls apart
4. The switch cap is missing.
The rotor was rewound, new carbon brushes were replaced, the stator was rebonded, the appearance was deeply cleaned, and finally the function was perfectly restored, and the drilling efficiency on the wood was very high.

[@MASI_forging]

The good thing about old tools is that often they can be fixed 👏👏

[@RefurbishmentKJ]

The circuit part of the old tool is relatively simple, and the problems in the mechanical part are easy to repair.😁

[@powertoolsrepair]

Love to see someone rewinding armature👍

[@RefurbishmentKJ]

Thanks, first try was a bit rusty😆

[@powertoolsrepair]

@@RefurbishmentKJ sometimes that happens with repairs 😁

[@alireza5951]

Very good and nice my friend 😊

[@hectormendoza4158]

Con una cárcasa nueva queda de lujo

[@Maranello12374]

Makita BDF-454 хороший инструмент.

[@RefurbishmentKJ]

Yes, more durable

[@danielg.vgremio83]

A caixa de transmissão dela é bem complexa.

[@ssekasiedward5688]

do you the rear bearing

[@gokturkgokbayrak2310]

Wonderful. I am watching you with envy. It would be nice if you also write down the materials you used.

[@RefurbishmentKJ]

Thank you for liking it. I will try to make the subtitles more detailed.🤝🏻🤝🏻🤝🏻

[@ScottRankin-du2yd]

… and the tools.

[@ScottRankin-du2yd]

What is that tool with the yellow handle that you used to separate some parts?

[@RefurbishmentKJ]

That little tool was originally used to repair watches and open the back cover of watches. Thanks for your support!

[@Freeway548]

請問後來轉子換新的？影片沒交代清楚，自己繞的轉子有問題？謝謝回覆

[@RefurbishmentKJ]

没有换转子，铜线跟换向器接触不良，后来全部上锡就好了。

[@jernejloknar8011]

The diabolical wiring scheme for this Makita rotor appears to be following:
(C = commutator, R = rotor), since it's a 10 pole commutator and 10 pole rotor you can just pick your own starting position as 1.
0.8mm wire
C1
R5 R8 7x
R3 R10 7x
C7 C2
R9 R6 7x
R4 R1 7x
C8 C3
R5 R2 7x
R10 R7 7x
C4 C9
R6 R3 7x
R1 R8 7x
C5 C10
R4 R7 7x
R2 R9 7x
C6 C1
PACK WIRES VERY TIGHTLY.

[@bigmesstest230]

You should put more grease in the gear box

[@billykulim5202]

are those high pitch sound normal? or is something wrong like not enough grease?

[@marcobun10]

you can show a diagram of the connections of the coils to the collector. Thanks.

[@jernejloknar8011]

See my other comment for scheme but i'm not sure why he only used 5 turns when original rotor has 7 turns.

[@jernejloknar8011]

Can you say what kind of copper wire did you use? What temperature rating?

[@RefurbishmentKJ]

I used 0.8mm thick copper wire😀

[@jernejloknar8011]

@@RefurbishmentKJ but what temperature celsius does the wire lacquer handle?

[@MKing_restoration]

回收修好的手电钻 KJ 来一把

[@RefurbishmentKJ]

🤣