Thoughts of freeing up a seized part...

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  1. thrashingcows

    thrashingcows Senior Member

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    I picked up an old Craftsman radial arm saw for free a while back, had been left out in the elements for a number of years.

    NnCtUOyh.jpg

    I have been working on getting everything cleaned up and working as it should and have only one area I can not get working again. It's the arms left and right movement that is seized solid. I have heat cycled it a dozen times or more with torch or heat gun then soak in PB Blaster, Tranny fluid, and other penetrating fluids, used brass hammer and punches to smack around the offending area, run it twice now through an electrolysis bath for several days but no luck.

    i9AQhRih.jpg

    As it currently sits...

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    HSPVxEwh.jpg
     
  2. Mr onetwo

    Mr onetwo Well-Known Member

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    use a bottle jack and force it apart
     
  3. twostick

    twostick Senior Member

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    If you have any Canadian Tire heat riser penetrent/lube in stock, that stuff is amazing. I think the active ingredient was acetone.

    I used it on a seized piano style door hinge on a Kenworth I used to own and it was swinging like a new one in about 30 seconds after I had sprayed pailfuls of every brand of wonder lube on the planet to zero effect.

    Google home made penetrating oil for some different recipes. Pretty sure acetone is the magic ingredient but it might have been toluene.

    Kevin
     
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  4. Mr onetwo

    Mr onetwo Well-Known Member

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    acetone and atf
     
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  5. 1970FuryConv

    1970FuryConv Senior Member

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    I could not find Canadian Tire heat riser penetrant/lube on ebay.
     
  6. detmatt

    detmatt Old Man with a Hat FCBO Gold Member

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    Some great suggestions above that I have used with success but I finally bought my first can of Kroil and that stuff Is the bomb!
     
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  7. boltupal

    boltupal Active Member

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    Heat ALWAYS works .
     
  8. RagTop66

    RagTop66 Active Member

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    Yup! Hit it with the “blue wrench”
     
  9. MoPar Maniac

    MoPar Maniac Well-Known Member

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    This will sound stupid but....did you release the lock?
     
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  10. BIGBARNEYCARS

    BIGBARNEYCARS Senior Member

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    50X50 Blend and shake well each time before each use 'cuz it does separate out while sitting. BTW, A quart of each iz a life time supply. If that won't do it I'd think about the price of scrap, Jer
     
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  11. live4theking

    live4theking Old Man with a Hat

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    Mentioned previously was unlocking the arm. The unlock mechanism is on the front of the arm toward the operator. I had a heck of a time getting mine to swing when I first bought it because it wasn't unlocking fully.
     
  12. thrashingcows

    thrashingcows Senior Member

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    Yes the locking mechanism is completely out, all the parts and pieces too and that is going to be a PITA to re-assemble. :( As mentioned I have heat cycled that area a dozen times or more with the torch but it just won't let go, I think the tolerances are so tight between those two parts that the little bit of rust that has formed between the two has essentially welded them together.

    If I had a press out in the shop I would try that but can't figure out how to make a back yard press that won't ruin the assembly.
     
  13. detmatt

    detmatt Old Man with a Hat FCBO Gold Member

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    I’ve turned 2 of the somewhat bigger versions of these down that were in good working order and also free. Between a good old circular saw, a sliding compound miter saw and my cabinet saw I’ve got everything and more covered that these can do.
     
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  14. live4theking

    live4theking Old Man with a Hat

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    You might be able to get a machine shop to take pity on you.
     
  15. 300rag

    300rag Waiting out the storm FCBO Gold Member

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    He probably has to go a couple hundred miles to get to one.
     
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  16. 1970cat

    1970cat Senior Member FCBO Gold Member

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    if you can keep the base solid, put pressure on the arm with a ratchet strap while soaking 2-3 times a day with pb blaster. try to give the strap another click each day. once it moves a little , put the strap on the other side and repeat. i freed up my drill press that way. i wouldn't recommend using a press. you'll likely break the casting.
     
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  17. thrashingcows

    thrashingcows Senior Member

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    That is a great idea...had been trying to think of a way to put pressure on the arm in one direction or another, seems obvious now that you mentioned it...:) :thumbsup:

    Just have to come up with some way to secure it, probably put the forks on my skid steer and fasten the saw to a HD pallet, then use the ratchet strap tied to the skid steer as an anchor point.
     
  18. detmatt

    detmatt Old Man with a Hat FCBO Gold Member

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    Do get yourself some Kroil, it is a Much better product than Blaster.