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S3 bumper collapse procedure.

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Old 02-03-2018, 07:57 AM
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Question S3 bumper collapse procedure.

Somewhere there was a thread on removing the wak from the US spec bumper shock absorbers and pushing back the bumpers, but I cannot locate it. Anyone have a detailed procedure to do this? Is it a huge and painful job?
 
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Old 02-03-2018, 07:59 AM
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Opps! meant to type WAX! Must be borderline dislexick!
 
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Old 02-03-2018, 08:06 AM
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Here's one

https://www.jaguarforums.com/forum/x...cation-146078/


Someone else came up with a better method. I'll find it

Cheers
DD
 
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Old 02-03-2018, 08:10 AM
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Old 02-03-2018, 02:15 PM
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I did mine sometime ago using Doug's method. I removed the front bumper shocks, drilled three holes and used very high compressed air (120-150 psi)to blow out the white stuff from inside. You may have to use a piece of coat hanger to loosen up some of the more solid stuff as you go along. When doing the rears, I did not remove the bumper shocks. I drilled the holes in situ and used the same air pressure to blow out the white stuff.Took longer to clean up my garage than the actual job.
 
Attached Thumbnails S3 bumper collapse procedure.-bumper-mods-005.jpg   S3 bumper collapse procedure.-bumper-mods-002.jpg  
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Old 02-03-2018, 04:03 PM
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Originally Posted by sanchez
I did mine sometime ago using Doug's method. I removed the front bumper shocks, drilled three holes and used very high compressed air (120-150 psi)to blow out the white stuff from inside. You may have to use a piece of coat hanger to loosen up some of the more solid stuff as you go along. When doing the rears, I did not remove the bumper shocks. I drilled the holes in situ and used the same air pressure to blow out the white stuff.Took longer to clean up my garage than the actual job.
I've only done the rears so far. Can't for the life of me work out how I'm going to get that nut off the back end of the front shocks. How did you go about that? For the rears I ended up using an impact wrench but there's no room to do that in the front.
 
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Old 02-04-2018, 06:53 AM
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I used a 17mm ratchet wrench at the front. The passenger side (right)is a lot easier to do than the driver side. On the driver side there is a lot less room to work the wrench. Soaking with PB Blaster does help. On the passenger side I inserted the wrench on the nut and used my jack to exert a little pressure on the shock because the whole unit was turning when I tried to loosen the nut. On the driver side the ratchet will not work. You have to use the open end side. The unit did not turn but the nut would only turn about 1/4 inch at a time due to the lack of space for the wrench to move. I had to keep flipping the wrench in order to grab the nut. A very slow process, but it works.
 
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Old 02-04-2018, 09:39 AM
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Not that it matters at this late date, but I wonder as to what the original "filler" was ?


Carl
 
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Old 02-04-2018, 12:01 PM
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I was told that it was some type of a silicone wax.
 
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Old 02-05-2018, 03:51 PM
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me I like the big chin bumpers. Think football helmet.
 
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Old 02-05-2018, 04:39 PM
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Just drilled out mine front and back, now I need to push them in, thinking how
 
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Old 02-06-2018, 09:07 AM
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Originally Posted by andys-GR
Just drilled out mine front and back, now I need to push them in, thinking how
If they're empty then you should be able to push them in easily by hand.
 
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Old 02-06-2018, 09:56 AM
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@andys-gr: now that you drilled the holes you have to remove the white stuff from inside.
As soon as I drilled mine some of the stuff oozed out. I used a rubber mallet to drive the shock in a little, then pulled the shock back. I then used a piece of wire to wake up the dried silicone and used compressed air to blow the stuff out. You have to drill 2 holes. If you do not have compressed air keep using the mallet to drive the shock in to push out the stuff. Pull it back out, use the wire then push it back in and on and on. With compressed air it took me about 15 minutes per side.
 
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Old 02-06-2018, 10:23 AM
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Thanks Sanchez, I ran out of time to try compressed air only got to get two holes in the first one.
 
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Old 02-06-2018, 10:44 AM
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Bear in mind that you may not get it all out that way. See the above picture from one of my rear shocks. No way those gel blocks were coming out of a small drilled hole.
 
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Old 02-06-2018, 05:02 PM
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You are quite correct. i had to break up the white gel in pieces small enough to come through a 5/16 hole. Used a wire hanger. The hole I used for air was 3/16. Slow but doable.
 
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