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Stuck dust cap on front wheel hub!
Stuck dust cap on front wheel hub!
1985 930 Turbo. Front wheel hub dust cap on drivers side came off with minimal drama. Passenger side, not so much. The dust caps are the style with a nut attached. I threaded a bolt into the nut, attached vice grips, and used a vice grip slide hammer to try and pull it out. Nut came off the cap, cap didn't budge. I assume I'm drilling the cap and trying something else, but any particular ideas on how to get the cap off at this point?   
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2014 911 (991) Turbo S, Agate Grey 2008 911 (997) Turbo, GT Silver 2002 911 (996) Turbo, Polar Silver 2001 911 (996) Turbo, Arctic Silver 1985 911 (930) Turbo, Guards Red |
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05-05-2025, 08:02 PM
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2014 911 (991) Turbo S, Agate Grey 2008 911 (997) Turbo, GT Silver 2002 911 (996) Turbo, Polar Silver 2001 911 (996) Turbo, Arctic Silver 1985 911 (930) Turbo, Guards Red |
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05-05-2025, 08:04 PM
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Location: San Diego
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Do you have a really big set of channel locks? If you do you can grab the cap and gently rock it back and forth. That usually gets them out.
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05-05-2025, 08:33 PM
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My favorite dust cap trick: Get a u-bolt-style muffler clamp of the right size and clamp it to the dust cap. Use a pry bar against the hub surface to lever against the clamp. Work your way around the clamp and the dust cap comes off.
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05-05-2025, 08:46 PM
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Location: Marysville Wa.
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Weld another nut to it. Too deep to get anything to grab it otherwise.
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05-05-2025, 09:28 PM
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Not sure why the forum won't display the pictures I upload... let me try again.
  
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2014 911 (991) Turbo S, Agate Grey 2008 911 (997) Turbo, GT Silver 2002 911 (996) Turbo, Polar Silver 2001 911 (996) Turbo, Arctic Silver 1985 911 (930) Turbo, Guards Red |
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05-05-2025, 10:16 PM
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There we go... As you can see, and as John Walker mentioned, it is recessed, no way you are grabbing it with any sort of tool.
I have a small 120V welder, but it's not nearby, I was hoping to avoid a several hour round trip to get it. Damn it's in there tight! what about drilling a hole in the cap and maybe giving it another go with a hook style slide hammer?
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2014 911 (991) Turbo S, Agate Grey 2008 911 (997) Turbo, GT Silver 2002 911 (996) Turbo, Polar Silver 2001 911 (996) Turbo, Arctic Silver 1985 911 (930) Turbo, Guards Red |
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05-05-2025, 10:19 PM
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That would work - if you had enough room behind it. But you probably don't.
Welding another nut would help. Clean the area up first to get a good weld. It looks like quite a simple fix, just inconvenient. If you drill it out to try the slide hammer, and fail, you may not have much room to weld the nut - so think ahead on that. Alan
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83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-) |
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05-06-2025, 12:45 AM
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would this work? drill on each side hole-gently-after pry it out so you could grab it with fuller on sides...?
Ivan
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1985 911 with original 502 191 miles...808 198 km "The difference between genius and stupidity is that, genius has its limits". Albert Einstein. |
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05-06-2025, 01:09 AM
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Drive to a shop that has a welder.
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05-06-2025, 02:10 AM
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Buy a $69 mig off Amazon with overnight shipping then throw it out after you weld the nut.
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05-06-2025, 05:46 AM
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What about tapping a Zerg fitting and pumping some grease in to push it out? Just a random idea. Not sure if it’s open in the back or not to allow it to seal up. I used to use a similar trick to get old pilot bearings out in my other car.
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05-06-2025, 06:21 AM
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Where are you located? If in San Francisco area, I can come over with my MIG.
Lightly clean the rust, weld on a nut. Clean up properly once removed. Don't drill anything. That risks hitting things on the back side, and shavings getting where you don't want them. ... IMO. |
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05-06-2025, 07:20 AM
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How about gripping it straight on with channel locks and tap at the channel lock with a hammer. Protect the cap with a rag or something
Bill |
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05-06-2025, 07:57 AM
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Thanks for all the ideas guys... Appreciated.
Quote:
Heck, just a replacement OE Turbo style dust cap is nearly $100, so whats another $70! ;-) Quote:
Quote:
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2014 911 (991) Turbo S, Agate Grey 2008 911 (997) Turbo, GT Silver 2002 911 (996) Turbo, Polar Silver 2001 911 (996) Turbo, Arctic Silver 1985 911 (930) Turbo, Guards Red Last edited by pfbz; 05-06-2025 at 09:00 AM.. |
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05-06-2025, 08:33 AM
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Once a nut is welded on, instead of a slide hammer, are there any pullers I can use that will pull on the inside and counter-act (push) on the outside?
All the various pullers I've used in the past pull on the outside and push on the inside...
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2014 911 (991) Turbo S, Agate Grey 2008 911 (997) Turbo, GT Silver 2002 911 (996) Turbo, Polar Silver 2001 911 (996) Turbo, Arctic Silver 1985 911 (930) Turbo, Guards Red |
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05-06-2025, 08:58 AM
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So I received another suggestion off forum, any feedback on this one?
Drill a hole in the center of the cap. Install a M8 or M10 steel Rivnut. Thread a long bolt through the Rivnut, it will press on the spindle and (hopefully) drive the cap out without having to use a slide hammer...
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2014 911 (991) Turbo S, Agate Grey 2008 911 (997) Turbo, GT Silver 2002 911 (996) Turbo, Polar Silver 2001 911 (996) Turbo, Arctic Silver 1985 911 (930) Turbo, Guards Red |
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05-06-2025, 09:38 AM
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Pfbz, that actually sounds like a good idea. The rivnut tool is probably more expensive.
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05-06-2025, 09:58 AM
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Call A Mobile Welder Service……..
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Keep It Simple. If you can not drive your car to a service shop, try to get a mobile welder service and have the NUT welded. You might as well have the other grease cup welded too. Tony Last edited by boyt911sc; 05-07-2025 at 03:02 PM.. |
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05-06-2025, 10:12 AM
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As has already been mentioned, drilling a hole risks contaminating the hub grease with swarf. Probably the worst option.
Drive somewhere to get the nut welded or have a mobile welder come round to your house….already suggested above |
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05-06-2025, 11:09 AM
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