help with removing front shock top nut (Koni) |
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help with removing front shock top nut (Koni) |
Stltri |
Sep 15 2020, 04:28 PM
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#1
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Member Group: Members Posts: 70 Joined: 13-April 15 From: SoCal Member No.: 18,622 Region Association: None |
Been trying to track down a clunk from the driver front end. Car is a 74 with Koni adjustable insert/shocks on all 4 corners. Looks like its coming from the shock on driver side at the top. Something is loose inside the shock tube and/or cover which duplicates what I hear/feel while driving. I checked everything else on the arms/rack/torsion bars/ball joint and everything tight (since I just also recently replaced all bushings etc). So I wanted to remove the shock to take a look but could not remove the nut after loosening it (while countering with a pipe wrench). I suspect the tab washer (which usually locks the nut and prevent it from spinning) broke. I have read that maybe a impact wrench (I have a cordless and corded impact but not air impact wrench) may spin it loose but may also damage the shock internals so I have not tried that route? Any other ideas on how to remove the nut?
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mepstein |
Sep 15 2020, 05:24 PM
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#2
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914-6 GT in waiting Group: Members Posts: 19,224 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
I use an impact wrench to remove. Takes two seconds and no shock damage. I was told to do it that way by a long time Porsche tech.
It’s not on super tight so any cordless should work fine. Clunks are usually from the large strut top nut under the large dust cap/metal cylinder coming loose. A pipe wrench will tighten it down. |
Stltri |
Sep 15 2020, 06:23 PM
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#3
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Member Group: Members Posts: 70 Joined: 13-April 15 From: SoCal Member No.: 18,622 Region Association: None |
I use an impact wrench to remove. Takes two seconds and no shock damage. I was told to do it that way by a long time Porsche tech. It’s not on super tight so any cordless should work fine. Clunks are usually from the large strut top nut under the large dust cap/metal cylinder coming loose. A pipe wrench will tighten it down. I will try the impact wrench shortly but here's a quick video of what I was describing. The dished washer is actually stationary and the threaded rod of shock and nut are turning together. IMG_4943.MOV ( 958.25k ) Number of downloads: 100 |
Stltri |
Sep 16 2020, 12:55 PM
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#4
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Member Group: Members Posts: 70 Joined: 13-April 15 From: SoCal Member No.: 18,622 Region Association: None |
I use an impact wrench to remove. Takes two seconds and no shock damage. I was told to do it that way by a long time Porsche tech. It’s not on super tight so any cordless should work fine. Clunks are usually from the large strut top nut under the large dust cap/metal cylinder coming loose. A pipe wrench will tighten it down. I will try the impact wrench shortly but here's a quick video of what I was describing. The dished washer is actually stationary and the threaded rod of shock and nut are turning together. IMG_4943.MOV ( 958.25k ) Number of downloads: 100 Update on this. Did not need to use impact. Looks like the tab on the dished washer broke. Maybe I overtorqued it during install? I was able to coax whats left of tab to bite unto the rod groove to get nut off. Next problem Im having is getting the rod to go down from the mounts so I can inspect the shock inside strut tube. Tried pulling from below with front of car lifted but no luck. How do I push from above? |
bdstone914 |
Sep 16 2020, 05:52 PM
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#5
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bdstone914 Group: Members Posts: 4,508 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
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Stltri |
Sep 16 2020, 07:05 PM
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#6
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Member Group: Members Posts: 70 Joined: 13-April 15 From: SoCal Member No.: 18,622 Region Association: None |
Yes. Car is on a QuickJack. I also removed the wheel to take a peek at the shock cover since it’s partially down. Maybe I can put the wheels back on to give me some weight leverage? |
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