Hitachi Rotary Stuck On?

0

04yfz

New member
So I was using my hitachi today and when i released the trigger it still kept spinning. I unplugged it, pluged it back in and it still continued to spin at about 600 rpm. I took the brushes out they looked fine. Anyone else ever experience this? Would I be able to fix this or will I have to get it serviced? Any help is appreciated, thanks.
 
SuperBee364 said:
Sounds like it's more likely to be a trigger problem than a brush problem. Probably the spring.
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The odd thing is, when I put it on speed 6 the pressure sensitive trigger works fine and when I release it it sounds like it's about to stop then keeps spinning at low rpms.
 
TH0001 said:
Mine does this all time. Going on number 4 in 9 months....
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I'm glad I was working on my own car when it happened so it's not so much of a big deal but this has me thinking about going with another brand. What would you recommend?
 
07e90 said:
I'm glad I was working on my own car when it happened so it's not so much of a big deal but this has me thinking about going with another brand. What would you recommend?
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If you're looking for a really light weight rotary, I sure like my new Flex 3403.
 
SuperBee364 said:
If you're looking for a really light weight rotary, I sure like my new Flex 3403.
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I don't mind the size and weight of the hitachi, because it is powerful. I did look into the flex and the one thing that I don't like about it is that the lowest setting is 1100 rpms.
 
I was concerned with the slowest setting being that fast, too, but it hasn't been a problem... yet. The RPM's do drop rapidly on the machine as soon as you put any work against it. I would guess that the RPM drops to well less than 1k or so when you actually start buffing.
 
Your hitachi should have a 5 yr warranty....give them a call they should be able to help you out...if you get stuck in a pinch and need a machine to borrow give me a call
 
the other pc said:
The Hitachi is light. The Makita’s a bit heavier and the Dewalt is significantly heavier





PC.
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If I do decide to go with a different brand it would probably be Makita, is the Makita that much heavier that it is very noticeable when using it?







elitemobile said:
Your hitachi should have a 5 yr warranty....give them a call they should be able to help you out...if you get stuck in a pinch and need a machine to borrow give me a call
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I'm going to give them a call, the only issue is that I bought it off ebay slightly used from someone, and the original paper work that came with it states a one year warraty...Thanks for the offer to borrow a machine, I'll give you a call to let you know if I find the ultrafina.



rydawg said:
mine did that too a bunch of times
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Did you have to have it repaired or did it stop on its own?
 
Just thought I'd give an update in case anyone else has this problem in the future.



I took it to a local tool repair guy and he fixed it up for me in less than a day for 25 bucks. He said the polish dust gets inside them and that's what causes it usually. It works perfect now.



I had an older model which only came with a 1 year warranty I guess(looking at the original paperwork), plus I bought it used in a package with lots of pads for a good price, so I didn't mind paying for the repair. I'm just glad the guy took care of me quickly so I can still do my details this weekend without issues.



If anyone is in NJ I highly recommend Power Tool Company in Neptune, call them at 732-776-8282.
 
a friend of mine ordered one (hitachi rotary) from coastaltool.com ( a while back) and when he plugged it in, it instantly started without even pressing the trigger. he sent it back and got a replacement. glad to hear everything worked out!
 
That's odd, it seems like these have the most problems compared to others. I think that once I get a steamer and extractor, I'll look into a replacement rotary and dedicate this one as a backup or for small tight areas with a 2 3/4 inch backing plate.
 
Glad to see you got it worked out...



As far as the Makita being heavier, it is and it is by more then the claimed 1 oz. However, I actually like the weight a little better. The trigger is nicer on the Hitachi, but everything else is an edge to Makita. It just "feels" like the better built machine. Of course now I am having problems with my Makita (power cord issue that many of them have)
 
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