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  #1  
Old 03-17-2005, 08:22 PM
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Default 98 CR250 fork rebuild

I have drained the oil from my forks overnight and the manual has me confused. It shows filling the damper with a certain amount of oil, then shows filling the outer tube with a specified amount also. There is a note that states if the damper has not been disassembled some oil is left in the assembly. My question is; can i just put the oil in the outer fork leg and be done with it, or do I have to take apart the damper and fill that also? Does oi in the outer fork leg work its way into the damper, or is that a completely seperate oil resevoir? Any help would be appreciated. Thanks.
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Old 03-17-2005, 08:26 PM
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Default Re: 98 CR250 fork rebuild

If you do that I think the 2 oils will be mixed. I am doing my CRF450 forks right now. Good luck dude...
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Old 03-20-2005, 04:25 PM
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Default Re: 98 CR250 fork rebuild

The fork damper is completely separate from the outer tube. The damper takes, I believe, 180cc of fork oil. The outer tube takes in the neighborhood of 380-400cc of fork oil. They never mix. Hence the name "Twin Chamber."
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Old 03-22-2005, 04:28 PM
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Default Re: 98 CR250 fork rebuild

Big Block is correct.

I actually run different brands and weights of oil in each chamber. I also only change the inner chamber every other time since it doesn't see the elements as much as the outter does.

So yes, you can just change the outter and be done with it for now.
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Old 03-22-2005, 04:35 PM
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Default Re: 98 CR250 fork rebuild

Thanks guys, i appreciate it.
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Old 03-30-2005, 12:40 PM
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Default Re: 98 CR250 fork rebuild

Actually it's more important to change the cartridge oil then the outer chamber. Thats the fluid responsible for your damping characteristics, the outer chamber fluid simply sets your air gap to control bottoming.
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Old 03-30-2005, 01:34 PM
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Default Re: 98 CR250 fork rebuild

Good to know.
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