Vintage Dirt Bike Q & A
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Fork Seals
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Author:  mdlafferty [ Sun Oct 16, 2011 8:19 pm ]
Post subject:  Fork Seals
Is it possible to replace fork seals without disassembling the forks? (75 CR125)
The last time I had my forks apart I loctited the bottom bolt in and I hate the thought of trying to undo it.
Thx.
Mark
Author:  mrmikkelsen [ Sun Oct 16, 2011 9:18 pm ]
Post subject:  Re: Fork Seals
Yes, if you have air caps. First pull out the seal retaining ring. Then tie a rag around the fork leg and slide the tight knot down to the seal. Properly support the bike. Pump air in little by little until you can feel the seal start to move up with your hand held on the rag. Use just enough air to get the seal to slowly move up and out until if pfffffff's. Huge mess guaranteed if you overpump. Believe it or not, these instructions came with a pair of fork seals I bought for my yz. With a bit of heat and an air powered wrench, that Loctite shouldn't give you too much trouble.

Enjoy,
Jon
Author:  rayivers [ Sun Oct 16, 2011 10:20 pm ]
Post subject:  Re: Fork Seals
Mark,

I never tried Jon's method, but apparently it can work quite well. I tried removing my CR's seals with a seal puller and then a slide hammer, but they didn't budge a micron. I took them to the Honda dealer and they got them out without damaging anything, but they said it was a nightmare; they were held in with some kind of epoxy (original factory seals!).

I also Loctited my damper rod bolt, but I got it out by screwing a longer 6mm bolt into the drain hole until it bit into the rod a little bit and kept it from turning, then heated the bolt with a heat gun and spun it right out with an impact wrench. It left a small mark in the rod, which came right out with fine sandpaper.

Ray
Author:  b-joe [ Mon Oct 17, 2011 9:44 am ]
Post subject:  Re: Fork Seals
it´s not necessary to loctite this bolt!

the seal will better come out when you use a heatgun for warming up the section where the seal sit in.
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