This afternoon I decided to do a fork rebuild on the 29er. Fork is a 2011 Fox 32 F29 RLC FIT. I bought the bike second hand last summer and just wanted to change the seals and put in fresh oil. Pulled it all apart. Took the damper cartridge and spring out. Cleaned it all up and installed new Enduro seals. Put it back together with 160ml of oil in the damper side and 30ml of oil in the spring side per the chart on the Fox site. Added about 90psi to start with.
Something didn't quite look right. I threw the wheel back on and put the bike on the ground. Zero rebound. Fork just slowly sags to the bottom and stays there. Tried to cycle it a bit by holding the wheel and pulling up. Nothing. Just saggy.
When I pulled it apart, very little oil came out of the damper side. Not enough to be 160ml. There was also more oil on top of the spring than there was in the lower. Is that normal?
I don't have any time left this afternoon to monkey around with it but I do tomorrow. Ideas and suggestions welcome.
I didn't take apart the FIT cartridge but thanks for the link. After looking at the other link, it seems the only thing I did differently was to fill the damper side from the bottom and not the top. I'll redo it this afternoon and see what happens.
Without looking at the Fox oil chart, 160 ml seems like a lot of oil for the right leg of a FIT fork. That seems like the correct amount for an open bath fork, and after you change the oil in an open bath Fox you will need to compress the fork a number of times to fill the damper and get the compression and rebound damping back.
I think a FIT fork would have required only a small about of bath oil in the right leg to help keep everything lubed up. If you didn't open up the FIT cartridge, you didn't touch your damping oil.
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