Posts
12
Joined
3/4/2017
Location
GB
Edited Date/Time
1/19/2019 3:29pm
I've never done fork seals before. When replacing the seals on Showa 49mm Spring forks can I just put fresh oil in the outer chamber only? In other words are the inner and outer chamber oils separate from each other? These forks have only done about 10 hours.
Now...that said, maybe you're thinking about servicing the fork at the same time you have them apart. In that case, you will find that the outer fluid is dirtier and in need of replacement more often than the inner chamber oil. This is because nearly all of the "soot" in a fork comes from the spring rubbing on the inside of the lower tube.
Change inner at the same time..
The Shop
The inner chamber is where all the "work" is done, or the conversion from kinetic energy to heat, so it does experience a break down...all depending on how hard and often you ride the bike.
So...with low hours and a need to just fix a seal, it's not mandatory that you replace any oil. But, if you want everything in tip top shape, then...change the fluids.
But yeah, if you have the time, and while you've got the inner chamber out, change the oil in it also. Not that hard.
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