Removing lower shock bolt--heat needed?

Discussion in 'GS Boxers' started by bobbybob, Nov 18, 2013.

  1. bobbybob

    bobbybob Long timer

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    Changing out my shocks for Ohlins on my 2010 R12GS, 34K miles and they are TOAST. The Reprom calls for 212F heat to remove the swingarm shock bolt. Just how the hell are you supposed to heat that swingarm up without blistering the crap out of the paint--and maybe roasting some other components close by? I have a heat gun but if anyone has any experience and/or tricks for this, I'd appreciate you letting me know. TIA! :1drink
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  2. Quirky

    Quirky Been here awhile

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    I've taken this bolt out with no heat on 2 new GS's with no issues. I recall the lower bolt on the front was a bit tight once and needed some heat.
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  3. bobbybob

    bobbybob Long timer

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    Thanks quirky, maybe I'll just try it without the heat then. On my '07 RT I almost ruined the bolt head it was so damn tight. Didn't want a repeat of THAT! Maybe their shops have complained also, as heating it takes more time and can be risky.

    But if anyone else has had to use heat, please chime in.
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  4. JimVonBaden

    JimVonBaden "Cool" Aid!

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    You may or may not need it, but I would use heat just to make sure you do not gall the threads. Heat it until the bolt sizzles spit.

    Jim :brow
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  5. bobbybob

    bobbybob Long timer

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    Jim, apparently you have done this before---how did you heat the swingarm up without blistering the paint or worse? Any tricks?
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  6. Flying Tivo

    Flying Tivo Been here awhile

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    If you have a heavy duty soldering iron you can try to heat it the bolt by itself.

    Felipe
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  7. bobbybob

    bobbybob Long timer

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    I do have one--thanks Felipe--I will try that first. Dunno if the heat will make it thru to the threaded area of the bolt but its worth a try.

    Edit: took a look, I think there will be too much "heat sink effect" for the heat to make it all the way to the threads. But I'll try it and see.
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  8. JimVonBaden

    JimVonBaden "Cool" Aid!

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    I usually use a heat gun. You can get one for $10 from Harbor Freight. No chance of damage like that.

    Some also use a map gas torch, but you have to be more careful with it.

    Jim :brow
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  9. Flying Tivo

    Flying Tivo Been here awhile

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    Look at it from the other side, and see if you can touch with the soldering iron the threaded side first.

    Felipe
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  10. def

    def Ginger th wonder dog

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    A little heat properly applied will make things easier.
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  11. bobbybob

    bobbybob Long timer

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    Didn't know the other end was exposed--I'll take a look.
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  12. Dan Cãta

    Dan Cãta Long timer

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    I doubt the threads are visible. Use a heat gun and you'll be fine ;)

    Dan.
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  13. JimVonBaden

    JimVonBaden "Cool" Aid!

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    There is no access from the other side on an R1200.

    [​IMG]

    Jim :brow
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  14. bobbybob

    bobbybob Long timer

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    My heat gun is old, has only one temp--hot as hell. I think you could weld with it, lol. I'll pick up a cheap H-F 2-temp unit and use the low 500F setting. Just trying to avoid paint blistering and other unwanted effects. Like melting my rear fender extender.:rofl
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  15. biometrics

    biometrics Been here awhile

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    I ride an R1100RT and used a $10.00 HF heat gun on the HIGH setting (carefully) and had no problems with paint blistering... just focus the heat on the exposed portion of the bolt... an infrared thermometer to gauge how hot you are getting it might also be helpful, although I didn't need one...

    -John
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  16. bobbybob

    bobbybob Long timer

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    There is NO exposed portion of the bolt. Except the tip of the head and its 3" away from the threads and runs thru the swingarm and shock eye. No help there.
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  17. bobbybob

    bobbybob Long timer

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    Picked up a H-F 2-speed heat gun and heated it for approx. 25 mins--came loose pretty easily with the impact driver. Used my infrared heat gun to measure the temp. I knew I'd get a chance to use that one day. :)

    Now I understand why you don't need to worry about the paint so much; the metal underneath soaks the heat away before it can build up enough to blister the paint, as long as you don't hold it closer than about 3-4".

    Thanks for the tips guys! :clap
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  18. LaurelPerryOnLand

    LaurelPerryOnLand Long timer

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    Picked up a H-F 2-speed heat gun:huh

    On and Off?:rofl

    Glad you had success!:clap
    #18