Hitachi G12SA Angle Grinder, Gear Lube скачать в хорошем качестве

Hitachi G12SA Angle Grinder, Gear Lube

A few more maintenance tasks on the old Hitachi angle grinder. This grinder's switch has become very touchy in recent years. It'll pop off at the slightest vibration while grinding. So I added a bit of neoprene foam rubber under the back side of the switch to hold the front tab down in the slot better. The foam helps dampen out any vibration and keeps the switch from popping loose in use. It still releases with a light tap on the back side of the switch. I also cleaned out the built up grinding debris stuck to the inside of the guard. There must have been a good 1/4" of hard deposits inside there. This grinder has seen a lot of use. I've built well over 200 pair of rock sliders/side bars which required extensive grinding to finish off the welded ends. At the suggestion of a commenter on the earlier electrical repair video, I took a look inside the gear box. Sure enough, the old grease had dried out and the gears were in need of some fresh lube. I cleaned out the dried grease in my parts washer. I decided to give some Skil worm drive gear oil a try since I've had a tube on hand for many years. This is more of a helical cut ring and pinion gear arrangement instead of a worm gear, but it's a similar type of tooth engagement. I'll see how this works and if it turns out to not work well, it'll be easy to pour the oil out and refill with grease. So far, no signs of leaks and it seems to be running much smoother and quieter than before. I'll open up the gear box in a few months to see how it looks after more use. If anyone has had any experience running gear oil in an angle grinder, post up in the comment section below. Maybe this is a stupid idea, but this is one way to find out. Update: No lube leaked into the motor although there was a slight leak out from the main drive bushing, likely because it was a bit over filled. After a few drips leaked out there, no further leaking was observed. Unfortunately, after about 6 months, the switch finally stopped turning on at all. Since it's a very complicated mechanism, it's not easily repaired. Finally replaced the grinder with a nice Dewalt unit that's much easier to use. The switch is on the bottom and it's activated by grabbing the body of the grinder. This is much better than the top mounted switch on this grinder. Be sure to rate, comment and share And as always, thanks for watching Intro: Louisiana Fairytale by Austin Rogers http://drfiddle.com/show_tune.php?id=94