FOX LOSING ALL AIR

[Titanium Rocket]

Help please: what causes a fork (Fox 100 RLC, 2008) lose all it's air, overnight. Rode yesterday morning it was fine. This morning it flopped right down, zero pressure. It was serviced 4 weeks ago, and hasn't done excessively hard work since then.

Appreciate any ideas.

[Johan Bornman]

Piston seal failure.

 

The air piston has a rubber seal that prevents air from escaping between the piston and inner stanchion. If this fails, the air escapes. It is a cheap component but the repair generally requires a full service.

 

The piston is lubricated by a couple of mills of thick oil floating on top of the piston. When this oil is depleted (it is a consumable in the system), the seal runs dry and eats itself.

 

As a quick fix you could open the air cap, pour 5ml of motor oil on top of the piston and inflate it. It should hold air for a while but the long-term answer is a new seal.

[Cassie]

Help please: what causes a fork (Fox 100 RLC, 2008) lose all it's air, overnight. Rode yesterday morning it was fine. This morning it flopped right down, zero pressure. It was serviced 4 weeks ago, and hasn't done excessively hard work since then.

Appreciate any ideas.

 

Serviced 4 weeks agao??? WTF??

 

They obviasly did not touch (i.e inspect) the innards...maybe just replaced the oil??

[Titanium Rocket]

Thanks everyone. This was my first attempt at DIY fork service. Followed procedure off the Internet, seemed straight forward enough. Must have cocked something up...will repeat tonight...never give up!

[29thumbs]

Johan is right, again, as always...

that little seal, can cause alot vulgar words...

Dont send it to the shop. do it yourself again...you will get it right..