Hitachi Rotary Stuck On?

07e90 · 04-18-08, 10:07

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 · 04-18-08, 10:16

Sounds like it's more likely to be a trigger problem than a brush problem. Probably the spring.

TH0001 · 04-18-08, 11:36

Mine does this all time. Going on number 4 in 9 months....

07e90 · 04-18-08, 02:28

Quote:

Originally Posted by SuperBee364

Sounds like it's more likely to be a trigger problem than a brush problem. Probably the spring.

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.

07e90 · 04-18-08, 02:29

Quote:

Originally Posted by TH0001

Mine does this all time. Going on number 4 in 9 months....

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?

SuperBee364 · 04-18-08, 02:38

Quote:

Originally Posted by 07e90

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?

If you're looking for a really light weight rotary, I sure like my new Flex 3403.

07e90 · 04-18-08, 03:21

Quote:

Originally Posted by SuperBee364

If you're looking for a really light weight rotary, I sure like my new Flex 3403.

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.

SuperBee364 · 04-18-08, 03:30

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.

the other pc · 04-18-08, 04:28

Quote:

Originally Posted by 07e90

I don't mind the size and weight of the hitachi, ....

The Hitachi is light. The Makita’s a bit heavier and the Dewalt is significantly heavier

PC.

elitemobile · 04-18-08, 08:10

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

rydawg · 04-18-08, 09:37

mine did that too a bunch of times

07e90 · 04-19-08, 09:30

Quote:

Originally Posted by the other pc

The Hitachi is light. The Makita’s a bit heavier and the Dewalt is significantly heavier

PC.

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?

Quote:

Originally Posted by elitemobile

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

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.

Quote:

Originally Posted by rydawg

mine did that too a bunch of times

Did you have to have it repaired or did it stop on its own?