XJ6 & XJ12 Series I, II & III 1968-1992

S3 bumper collapse procedure.

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Old Feb 3, 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 Feb 3, 2018 | 07:59 AM
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Opps! meant to type WAX! Must be borderline dislexick!
 
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Old Feb 3, 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 Feb 3, 2018 | 08:10 AM
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Another

https://www.jaguarforums.com/forum/x...r-mods-187755/


Cheers
DD
 
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Old Feb 3, 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 Feb 3, 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 Feb 4, 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 Feb 4, 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 Feb 4, 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 Feb 5, 2018 | 03:51 PM
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me I like the big chin bumpers. Think football helmet.
 
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Old Feb 5, 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 Feb 6, 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 Feb 6, 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 Feb 6, 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 Feb 6, 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 Feb 6, 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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