Old Model 18V Rotary Hammer Restoration | MAKITA HBR 241

I bought this tool from recycle shop. All the batteries runs out of power. The charger socket was cut out. The power tool couldn't test, and I didn't know it works or not that time. However, after the restoration, this tool is working normally again.

Power tool specifications
- Battery : 18 V (3.0 Ah) Li-ion.
- Steel : 7/8" (24 mm)
- Concrete : 13/16” (25 mm)
- Impact energy : 1.9J (1.4 ft. lbs.)-
- No load speed : 0 - 1100 RPM.
- Blows per minute : 0 - 4000 BPM.
- Vibration Level: 12.5 m/s2
- Noise Level: 86 dB(A)
- Overall Length: 16-3/8" (417 mm)
- Net Weight: 7.7 lbs (3.5 kg)

Video section
00:52 repair the 18V charger
01:25 charge the battery
03:37 testing the power tool
04:07 carbon brushes removal
04:49 gear housing complete removal
05:33 SDS drill chuck removal
06:07 change mode lever removal
06:22 inner housing complete removal
06:34 inner housing complete disassemble
07:57 housing set disassemble
09:19 all parts show
09:25 metal parts cleaning
10:39 plastic parts cleaning
12:13 DC armature restoration
14:06 carbon brushes reshape
14:29 power switch checking
14:54 seal ring installation
15:18 needle bearing complete installation
16:02 inner housing complete assemble
18:52 change mode lever installation
20:37 SDS drill chuck assemble
21:13 housing set assemble
22:45 rubber pin replacement
23:42 drill mode wood testing
24:03 drill mode steel testing
24:26 hammer drill mode concrete testing
24:54 hammer mode concrete testing

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