M12VC failure - Router Forums
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post #1 of 6 (permalink) Old 12-18-2009, 04:54 PM Thread Starter
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Default M12VC failure

A while back, I posted this on another woodworking forum after having a table mounted Hitachi M12v explode under my chin due to the motor fan failing ( blades sucked into the motor, splitting the casing and ejecting parts in various directions) during operation:

""But seriously, do yourself a gigantic favor; use a flashlight and closely inspect the fan blades where they are pressed at the base. I found (during the postmortem) that the fan blades appear to be highly susceptible to stress fracturing in exactly the same way a fan fails in gas turbine (jet) motor, at the apex of the bend where the fan blade connects to the sleeve (in this case pressed) . The majority of the blades had stress fractures which ran over half their width, that is, the ones that were still attached after the catastrophic failure... Definitely worth a quick peek.""

Inspecting the fan will most likely require cleaning away some very fine dust. this can be swabbed away partially and/or carefully blown clear with compressed air through the vents, do whatever it takes to get a good look at the fan itself, it might save you a bad day in the shop. This unit was made in the early '90s and "died" in the Fall of '05, less than 15 years old and was only used as a back-up for most of it's life.

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post #2 of 6 (permalink) Old 04-29-2010, 10:52 PM
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Cowtown_eric here...

I ain't parting with the stanley 71oids just yet, but as I get older it's harder to run around the bench fast enuf to make folks believe it really is a router....

Not that I haven't had 'lectric routers for some time now. Anyway, here I is on this forum hopefully to learn some new tricks, share some of mine, whatever.

That's it in a nutshell.

in Alberta
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post #3 of 6 (permalink) Old 06-14-2010, 06:12 PM
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Hitachi M12VC received new from _mazon. It appeared to have been previously opened, but looked new otherwise. The first time I turned it on, it ran only 15 seconds and then shut down by itself. Would not start again. A few minutes later I tried it and again it ran 15 seconds and then shut itself off. It will not turn on again. The circuit is fine and runs other equipment on the same outlet. I am returning it for a replacement. Has this happened to anyone else?
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post #4 of 6 (permalink) Old 06-15-2010, 01:00 AM
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Welcome to the RouterForums Charlie. Thank you for joining our community.

the "Doctor"

In woodworking there is no scrap, only firewood.

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post #5 of 6 (permalink) Old 09-15-2011, 10:00 PM
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I just need the hitachi M12 VC manual so I can see how to operated it and dissasymble miss spelled however take aprt and put the right size router bit in. Right now it looks like it holda 1/2 inch bit and I need to replace it with the reducer that it came with but I am not sure how to take it apart or use the wrenches it came with. Never used it before it was the las one at lowes and I bought it as is for $40.00 so I think I made a pretty good deal especialy when I compare it to the cheap Black end decker I wasusing...
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post #6 of 6 (permalink) Old 09-15-2011, 10:10 PM
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