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SL55/63/65/R230 AMG: Help undo this screw

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Old 01-27-2019, 06:29 PM
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03 SL55 AMG
Help undo this screw
Anyone tried to undo this screw? It's in the trunk next to the battery on a 03 SL55.

What I did:
Took the plastic skid plate by the exhaust pipes off to access from underneath. Nothing there.
Applied penetrating spray on the screw. Put two nuts on the screw and applied force to the bottom nut. No success.

It seems that the screw is not a set screw. It's actually a bolt done from the bottom of the battery housing before they welded the housing to the body.
Any idea helps.


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Old 01-27-2019, 08:43 PM
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it would be welded in
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Old 01-28-2019, 11:13 AM
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2007 SL55 AMG
It's not a bolt, its a threaded stud. Only option to remove would be to cut it. Why do you want to remove it anyways?
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Old 01-28-2019, 11:19 AM
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2003 SL55,2020 GTC ,2017 GTS sold ,2002 G500 Sold,2003 SL500 Sold,
Doesn’t come out
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Old 01-28-2019, 02:14 PM
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03 SL55 AMG
Yep there’s no way undoing this stud w/o cutting it. The only reason is to make more room for a bigger battery like group 49 or 34R or 94R
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Old 01-29-2019, 10:03 AM
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I think you would be better off to use the right battery
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