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Thread: Router issues

  1. #1
    Join Date
    Dec 2007
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    Default Router issues

    I have a Hitachi TR-12 router which has had very very little use. I used it last week and it worked fine came out today to finish the job and did a test pass wasn’t deep enough to make a cut switched it off adjusted the depth turned it back on and nothing?

    Checked the circuit break and PowerPoint both are working.

    Is there an internal fuse that could have gone?

    Other ideas?
    …..Live a Quiet Life & Work with your Hands

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  3. #2
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    Default

    Sorry to hear about that, I had ranked that model router as one ofvthe best and reliable workhorses.
    I would suggest itvissomething relatively minor.

  4. #3
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    Default



    Well tried switching it on again and it strayed and promptly let the blue genie [emoji3441] out. It was my dad and I don’t think he ever used it, probably the second time I have. As you can see in the photo it was like new.

    Guessing it’s cheaper to replace than have looked st let alone fixed?
    …..Live a Quiet Life & Work with your Hands

  5. #4
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    Default

    Can you turn the collet by hand
    But make sure it is unplugged
    Also Dale we use a tool repair shop in Burwood(Near the Kmart)I send you the address later.

    Cheers Matt

  6. #5
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    Default

    Yep still spins.
    …..Live a Quiet Life & Work with your Hands

  7. #6
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    Default

    Hi,
    Could be the brushes or dust in the switch, those are the most common "now it works now it does not"
    Regards
    Hugh

    Enough is enough, more than enough is too much.

  8. #7
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    …..Live a Quiet Life & Work with your Hands

  9. #8
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    Default

    Field windings are cooked.

  10. #9
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    Default

    I don't know where you are in Melb but Heidelberg Industrial Supplies was recommended to me for a drill and they were able to help me.

    address is 1/22 Helen St, West Heidelberg, 3081 Phone 9459-5747
    Heidelberg Industrial Supplies Co. Power Tool Sales | Power Tool Repairs | Power Tool Spare Parts.

    Could be worth a phone call. The TR12 will probably outlast a lot of the newer routers.
    Tom

    "It's good enough" is low aim

  11. #10
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    I spoke to Trevor @ Heidelberg Industrial Supplies and emailed over the photos to see if he thinks it’s worth looking at.
    …..Live a Quiet Life & Work with your Hands

  12. #11
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    Default Cooked or not Cooked

    Everything in your pictures look Ok and as new. Even the nick in the brush should not matter. Some suggests that the main windings are cooked: take a smell and you'll notice a sharp acrid odor if they are cooked. They don't look anything but new.

    How long has the machine been sitting on the shelf since it was used before you turned it on successfully? If it is some years then I suspect that the switch contacts have corroded and the whole switch needs replacing. My planer did exactly the same thing - it hasn't skipped a beat since I replaced the switch.
    dave
    nothing is so easy to do as when you figure out the impossible.

  13. #12
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    Default

    My concern is the chipped brush, there is not enough missing to affect conduction to the commutator, but the missing bit is large enough to lock up the motor or bridge connections within the motor.

    I accept that you reported that the spindle could rotate freely when you checked, but if the brush chip was locking things up and preventing starting, it could be pulverised in the time it took to cook the field winding, or could have been ejected if you turned the spindle backwards.

    Comparing the colour of the armature windings and field windings, I suspect that the field windings are at least parbaked, if not fully cooked. I am also concerned about the dark spot on the armature in the photo, but don't know if that is a lighting shadow or a burn mark, is there a similar one opposite it on the armature? If so I suspect that the locked spindle scenario is probably correct. Did you find an intact chunk of brush material that could be the bit chipped off when you dismantled the unit.
    I used to be an engineer, I'm not an engineer any more, but on the really good days I can remember when I was.

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