Question about Porter Cable 690LR Router

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Router runs slow

Been shaping for about 2 weeks and now my porter cable router runs slow and hot. opened it up cleaned the armature, brushes look fine, router still runs slow

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  • sm_const May 17, 2009

    It spins fine, I took it apart and cleaned out any dust and sanded down the contact point on the armature. I don't think it's a bearing problem. Brushes look fine. I just runs slow and makes a strange sound, gets really hot too.

  • sm_const May 18, 2009

    Yeah a slight squealing and the heat is where you would grap the router if you weren't using the handles eg. main body

  • sm_const May 19, 2009

    porter cable 690lr (6902 motor)

    central coast calif.

  • sm_const May 19, 2009

    Ok opened it up again and sanded down the contacts and armature. I think it's back up to speed. I did notice that all my fan blades are missing :( I'm sure it's due to shaping material and a piece fell inside the router. It got hot and melted the contacts). I did notice a little play in the lower bearing but when I put the router back together there isn't any play. So now I need to find out if the fan that mounts to the armature can be replaced. Thanks for your help.

  • sm_const May 21, 2009

    Thanks for your help I found a fan and I'll have it installed locally. Thanks for your help.

  • David Ford
    David Ford May 11, 2010

    That sound is it like a slight squealing and where is the heat located

  • David Ford
    David Ford May 11, 2010

    what do the bearings feel like. I am thinking they are seizing up causing you a problem. Unplug the tool and turn the armature shaft by hand to check.



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I still think that it is the bearings, especially since of the squealing noise which is a symptom of the bearing seizing up and the armature shaft would get hot transferring the heat to the motor housing. Give me the model number and brand and I will find a breakdown and part numbers for you and also if you give me your general location I will try and find someone local to get the parts.

Posted on May 19, 2009

  • David Ford
    David Ford May 21, 2009

    You must be living rigth. The fan on the model and type I looked at is available. Around 9.00. I suggest that you go to and type in your model number in the middle of the page at the bottom and you will need the type number to see if it is for your router. Then you can back out and find a dealer close to you or give me a shout and I will find one for you. The downside is that the fan has to be pressed on (usually) so whoever you contact ask them if they can do it, and to be on the safe side as the armature is out I would also recommend replacing both bearings whether they appear good or not. saves time. Good Luck and let me know



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