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1981 CX500C
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31 Posts
Discussion Starter · #1 ·
Good afternoon everyone,
I replaced my fork seals two weeks ago with the 4 into 1 brand seals. Those seals were insanely tight going on. They leaked out after 2 days. Replaced the seals last week with K&S seals from a local shop. I put superglue in the pits. The pits aren’t that big. They still leaked out after the first ride. What am I doing wrong? Are the pits the problem? Very frustrated with these forks.

Filled with atf and 15psi of air.
 

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1981 CX500C
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31 Posts
Discussion Starter · #3 ·
Ok everyone, this is getting frustrating, but I think I’m finding the issue. Apparently, the shop I ordered the seals from did not spec an 81cx500c. The size I got were 33mmx46mm. Partzilla shows that I need 35mmx48mm. 🤬
That explains why the seals were insanely tight going on.

I think I found the issue, fml.
Good news is, I’ve gotten quick at removing and installing those forks 🙃
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Wow, I’m impressed you were able to install 33mm seals on 35mm tubes! No sarcasm intended.
 
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1981 CX500C
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Discussion Starter · #7 ·
Wow, I’m impressed you were able to install 33mm seals on 35mm tubes! No sarcasm intended.
So the 4into1 seals were tighter than the k&s and I had to use a wood peice to pry it on. And the second round of fork seals I noticed they didn’t seal to the outer tube, was wondering how they’d seal in the first place.
 

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'84 CX650E that is evolving into a GL500
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If it leaked on your brake caliper make sure you either replace the pads or bake the oil off of them (place on non flammable surface and heat them with a blowtorch until they start to smoke, then cool naturally; check that the friction material hasn't delaminated from the steel backing before using)
 

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1981 CX500C
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Discussion Starter · #10 ·
If it leaked on your brake caliper make sure you either replace the pads or bake the oil off of them (place on non flammable surface and heat them with a blowtorch until they start to smoke, then cool naturally; check that the friction material hasn't delaminated from the steel backing before using)
Thank you for the tip
 

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Glad you finally got it sorted, sorry you had to go through all the hassle 3x. As a side note to measurements, you may want to invest in a set of dial/digital calipers to check the sizes of items for reference. The FSM many times will give wear limits on parts so they will come in handy for other maintenance tasks as well.
 

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On your note of slider bushings. In my ignorance, I proudly scrubbed them to a shiny copper when I rebuilt my forks. I now realize the black that I scrubbed off was not wear, but rather a coating. I've since bought new bushings, but have not installed them as of yet. How urgent of a matter is this?
I'm planning on cutting the fork springs soon, and installing spacers to help lower my forks by a few inches. I figured I'd to everything all at once.
 
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