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Router Repair - Replacing the Clamp Knob (Porter Cable Part # 874582)

950 views · Published 18 June 2015 · 2:10 · Indexed 10 November 2026

Channel: FIX Tech Guides · 2015 · Howto & Style

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http://www.ereplacementparts.com/clamp-knob-p-60959.html
Click here for more information on this part, installation instructions and more.

This particular knob is specific to Porter Cable manufactured brands, including Porter Cable, Black and Decker, and Delta. To find a clamp knob specific to your model, visit eReplacementParts.com.

If your router is showing any of these symptoms; replacing the clamp knob could solve your problem:

1) Motor is loose in base
2) Clamp knob threads are stripped
3) Bolt is broken-off in knob
4) Knob is missing or lost

eReplacementParts.com part number: 874582

Tools used for this repair/replacement:

1) None required

Get model-specific repair help from eReplacementParts.com. Learn how to troubleshoot, diagnose and repair your power tools and equipment with illustrated instructions, hundreds of step-by-step repair videos, and our DIY forum. If you have a power tool or appliance problem, we can help. https://www.ereplacementparts.com/articles-c-8873.html

[ VIDEO TRANSCRIPT ] 

Hi, I'm Mark from ereplacementparts.com. In this video, I'm going to show you how to replace the clamp knob on a Porter Cable 690 router.  The clamp knob is a wing-nut specifically designed to secure the base on your Porter Cable router.  It works along with the special bolt. The clamp knob will need to be replaced if you just simply lose it; if the thread strips out inside or if perhaps the bolt breaks off inside the wing nut.

Replacing the clamp knob is easy to do and we're going to show you how.  Clamp knobs, as well as many other parts, can be found on our website. Let's get started.

The thumb screw removes counter clockwise.  I'll go ahead and remove it from the special bolt.  On the special bolt, there's a washer and then the bolt slides away from the base.  Now, you can install the new thumb screw.

The special screw you'll notice on one side of the flange, it's a little wider than the other side.  The wide side should go against the router.  Then the washer and the new thumb screw.

And that's all it takes to replace the clamp knob on a Porter Cable 690 series router. If you found this video helpful, be sure to give us thumb-up and leave a comment.

[ END TRANSCRIPT ]

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