Question about Milwaukee Tool Milwaukee 10 Amp Recprocating Saw Sawzall Plus with Quik - Lok Cord

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6520 chuck problem

Hi,
The 6520-21 chuck assembly got wet and started to rust. I sprayed it with WD but the blade holder will not engage. I am able to rotate the "chuck" to insert the blade, but it does not lock and hold the blade. How do I disassemble to clean/lubricate, or do I need to replace parts?

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You are both correct about the rust, but as far as the can of worms the rebuild kit for the Quik Lok Blade is about 20.00 and comes complete with DETAILED instructions that will walk you thru it. It takes about 5 minutes and is really easy even for a novice. Dave

Posted on Dec 21, 2008

Thank you very much for responding.
My local repair shop showed me the replacement parts and described how the blade lock mechanism works. Basically, it is a ramp that releases the blade. Somehow (rust I presume) it got stuck on the end of the ramp and would not release. We finally got it unstuck and worked it in. You are right about opening up a can of worms..The replacement kit is tricky as the tech told me.

I agree, WD40 is bad because it may pick up debris and clog the movement-creating the problem all over again. I think I will flush the WD out and lubricate with a dry lubricating spray. Compressed air is a good way to help flush it out.

Thanks again!

Posted on Oct 23, 2008

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Hi, I'm not too struck on using WD40! It cleans down to bare metal and usually adds to the prob. Blow it out with compressed air, moving the chuck back and forth, then add a few drops of 3in1 oil. Try this first before opening a can of worms! LOL Frankster016

Posted on Oct 23, 2008

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