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Fox shock service

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Dryside
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Joined: Wed Feb 05, 2014 7:17 pm
Location: Kennewick, WA

Fox shock service

Postby Dryside » Wed Nov 13, 2019 7:32 pm

Fox's recommended service interval for 100% street use is 10K miles to check Nitrogen and 50K for full service, seals and oil. Throw in an trail here and there and living in East Kennewick and the interval might shorten up some.

So, the big question is... Does/has anyone performed any of this on their shocks? If you did, did it make any difference? Would you send them to Fox for rebuild periodically? Rebuild at Fox is $75 each.
92 YJ
88 XJ (Son's project)
75 Power Wagon
09 JKU (Balloon Animal)

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Roman
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Re: Fox shock service

Postby Roman » Wed Nov 13, 2019 9:15 pm

Dryside wrote:Rebuild at Fox is $75 each.


PLUS shipping!

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Roman
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Re: Fox shock service

Postby Roman » Wed Nov 13, 2019 9:15 pm

How many miles are you at now?

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TJDave
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Re: Fox shock service

Postby TJDave » Thu Nov 14, 2019 7:06 pm

I've done nothing to my Fox reservoir front shocks, that you charged, or my Fox 2.0 rears. 3 years ago? I can't tell any difference since they were installed. But the TJ sits in the garage most the time. Probably due for a recharge maybe.
Other than that, I am no help! :oops:
2004 TJ---3" lift, 35's, and a bunch of other junk.
2016 JK Sport 2 door---lifted, 35's, and a tow bar mount.

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Dryside
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Joined: Wed Feb 05, 2014 7:17 pm
Location: Kennewick, WA

Re: Fox shock service

Postby Dryside » Fri Nov 15, 2019 11:30 am

I would guess about 30K.

This is mostly newby JK stuff. Never worried about it on the YJ. Shocks were consumable on it, if it even needed them.
92 YJ
88 XJ (Son's project)
75 Power Wagon
09 JKU (Balloon Animal)

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Wrench
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Re: Fox shock service

Postby Wrench » Sat Nov 16, 2019 11:32 am

It really isnt difficult.

Regardless of what people say on the internet, you dont need 100% nitrogen to charge them. Ambient air is over 75% nitrogen naturally. I was an aircraft hydraulic systems specialist in the Air Force and we used both Nitrogen and compressed air to service the accumulators, struts, and tires on the planes. Using pure nitrogen has the potential to prevent internal corrosion and a slightly more stable air pressure to temperature differential, but the only internal corrosion I have witnessed was on 30+ year old airframes. I have used compressed air to charge motorcycle (motocross, supermoto, and street) suspension for 15 years now and it works excellent. My current Husqvarna supermoto has the AER48 air forks (air spring) and the bike came with it's own hand pump. Looks like this: https://www.ktm-parts.com/79412966000.html

You can find these pumps all over Amazon and Ebay, sold as bicycle suspension air pumps. They are cheap and work great. Need a peak pressure rating of at least 150psi.

I would get a pump, use it to top off the reservoir charge, and run the shocks until they physically start leaking fluid. Then service them and replace the seals.

The hardest part is in servicing them is bleeding the air out of the oil side of the shock when re-assembling.
Paul
'84 XJ, '92 YJ


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