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  #1  
Old June 30th, 2020, 07:34
jpk's Avatar
jpk jpk is offline
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New shocks for my XJ

I just bought a set of shocks for my 96 XJ. It has been a southern vehicle all its life so there no rust just the usual coating of years of road dirt. I know I should probably get under the rear end and use some penetrating oil on the upper bar mounts before attempting to remove the bolts. Any recommendation for a good penetrating oil to saturate the connections with?
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  #2  
Old June 30th, 2020, 08:27
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Rob Mayercik Rob Mayercik is offline
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Re: New shocks for my XJ

PBBlaster is probably the most readily available.

Might be worth trying to use the little tube attachment and spraying the stuff up into the subframe structure underneath the back where the nuts for the upper shock mount bolts live, to improve the odds of them not snapping off.

That said, if those do break, at least these days you don't have to cut into the cargo floor to replace them, you can do something like this:

https://www.quadratec.com/p/rough-co...SABEgLGmfD_BwE


Good luck!
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  #3  
Old June 30th, 2020, 08:55
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Re: New shocks for my XJ

PB Blaster. Spray them daily for a few days before you start the job. A little heat from a propane torch may help it get in there as well.
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  #4  
Old June 30th, 2020, 11:59
75SV1 75SV1 is offline
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Re: New shocks for my XJ

I just did this the past week. It was not successful though. It did get mine loose, about 1/8 turn. I thought I was getting Kroil on the threads from the side. No. You have to get from the frame pocket for a lack of a better word. I snapped one head off, then just did that for the rest. I'll try and drill them out etc. Hopefully I can find a Left Hand drill. Sometimes that works. PB Rust Blaster is good too. I am trying different stuff. Shaffer's Penetro is an option. I like it after I've shot the threads about twice with Kroil. I also think once you get threads freed about 1/8-1/4 a real lubricant helps. Heat does too. Try a propane torch on the heads.
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  #5  
Old June 30th, 2020, 12:51
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Re: New shocks for my XJ

I have used PB Blaster and "Deep Creep" (a Seafoam product). Deep Creep worked better.
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  #6  
Old June 30th, 2020, 16:29
JonnyCat63 JonnyCat63 is offline
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Re: New shocks for my XJ

I just did this, too. I tried to get PB Blaster up on the threads from the inside, which I was able to. I was gentle and careful, moved it back and forth, but to no avail, snapped off 3 of the 4 bolts. I ended up using a flag nut kit found on Ebay.

That being said, the flag nuts were stupidly easy. Just took an air hammer and busted out those capture nuts in a couple of minutes. I wouldn't waste too much time getting the stock bolts out, nor would I waste time drilling and tapping. The flag nuts are very easy.
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  #7  
Old June 30th, 2020, 18:02
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Re: New shocks for my XJ

Quote:
Originally Posted by Rob Mayercik View Post
PBBlaster is probably the most readily available.

Might be worth trying to use the little tube attachment and spraying the stuff up into the subframe structure underneath the back where the nuts for the upper shock mount bolts live, to improve the odds of them not snapping off.

That said, if those do break, at least these days you don't have to cut into the cargo floor to replace them, you can do something like this:

https://www.quadratec.com/p/rough-co...SABEgLGmfD_BwE


Good luck!
I had seen these before but had forgotten about them. I may go ahead and buy them just to have them on hand in case.
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  #8  
Old June 30th, 2020, 19:09
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Rob Mayercik Rob Mayercik is offline
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Re: New shocks for my XJ

Not a bad idea, they're certainly inexpensive enough...
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  #9  
Old June 30th, 2020, 20:28
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Runnin'OnEmpty Runnin'OnEmpty is offline
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Re: New shocks for my XJ

Here's a tip if you have the patience:
What snaps the bolts is a buildup of rust on the bolt
threads when you're turning them out. to prevent this,
once the bolt feels broken loose, retighten it and loosen
again. Go 1/16 turn at a time, slowly, while spraying
penetrant on the upper threads. Repeat back and forth,
and after 1-2 complete turns the bolt will begin to turn
easier and will come out intact. I removed all 4 of mine like this,
without damage.

Did I mention it takes patience? Yes, took about an hour in all,
but better than dealing with broken bolts. Use a padded creeper
with a good head support.
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  #10  
Old July 4th, 2020, 10:44
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Re: New shocks for my XJ

Thanks all. Where can I find "Deep Creep"?
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  #11  
Old July 4th, 2020, 17:05
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tjmotter tjmotter is offline
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Re: New shocks for my XJ

Quote:
Originally Posted by jpk View Post
Thanks all. Where can I find "Deep Creep"?

Most auto stores should sell it. I bought it locally at an O'Reilly's but it looks like Autozone sells it as well:


https://www.autozone.com/greases-and...2oz/597211_0_0



HTH
Todd
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  #12  
Old July 6th, 2020, 23:25
hamptonxj hamptonxj is offline
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Re: New shocks for my XJ

I read a report that acetone and tranmission fluid (50/50 mix) is the best to loosen old bolts when tested against pb blaster and other similar products. You can use google to find the study. This solution worked great when i removed stubborn leaf spring bolts after spraying them for several days.
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