RiderSite.com - Motorcycle Forums

I have had a small leak coming from one of the pipes near the sprocket casing, I decided to clean the air box and pipework.
I also decided to clean all the gunk from inside the sprocket cover also.
I wanted to see how hard it would be to to change the slave cylinder and at the same time give that a clean with a rag and some wd40.........

When i looked inside before spraying the cylinder with wd40 i noticed fluid inside.
I would assume the seals are buggered or is this normal?

No, not normal as its a sealed system. when it gets too bad the slave wont hold enough pressure to operate the clutch so tapping into first wont happen. Easy job,assuming it aint all spanked,everyone forgets, replace all brake/clutch fluid every 18 months,clean the crap from reseviors with cotton buds, dirty fluid is the biggest killer of seals !

blinkey501 wrote:I have had a small leek coming from one of the pipes near the sprocket casing,

There's a man who knows his onions ........

.... and here's some info about obtaining a replacement seal https://www.ridersite.com/viewtopic.php?t=7647

.... and that was seal - not sea-lion - they're different

Thanks for the info but it now has become padgets problem has oasis is still under warrenty from them,

blinkey501 wrote:Thanks for the info but it now has become padgets problem has oasis is still under warrenty from them,

Excellent !
Always better when you can give someone else the problem

I have rang padgets today, they are getting the parts and everything will be sorted.....

Result ! D-Rider, Ive spent so many evenings spent with fine wet/dry wrapped around my finger,engaged in what looks like sexual activity with various clutch/wheel/ master/slave cylinders rectifying what should be a maintenance procedure. Must we beat sense into the non believers???

I knew hammers would be involved at some point.

blinkey501 wrote:I have rang padgets today, they are getting the parts and everything will be sorted.....

Seems they didn't do a great job as it's leaking again!

Hi all,

Don't want to high-jack the thread, but, relevant I guess. My factory racing billet seems to be loosing it's power. Just had the fluid changed, so thought the seal has perished slightly. Anywho, contacted motopike, they sell the service kit (i.e. new seals) for said item. Spoke to the woman on reception, who mentioned they did a full service for £20+vat and posting. A few polite questions and I got some onfo out of her.

Apparently, they have discussed the issue of degredation of the seals and spoke to a chap in the US of A. He works with diving gear and suggested that they use this type of silicon to smear inside to reduce the risk of seal wear by using the same silicon used in seals for oxygen bottles. I was asked by the woman (receptionist) to contact adam by email for details. His reply was to put a smear of dot 4 in there

Obviously, he didn't want to give away his secret about the silicon I have a scuba school and shop near me and went there and asked about this type of grease. There are two types, one for use on 100% oxygen bottles where there can be a chemical reaction with normal silicon. And the second type will reduce the wear of the rubber seals, which I duly bought for a kings ransom of £4.95!!!

Getting my service kit in the morning, will be trying out my secret silicon from ohio next week. Apparently, this will minimise the blackening of our fluid

- Of course there might be slight differences in composition, but I didn't think there was much secret about grease for brake (and clutch) cylinders - be it silicone or red rubber grease ... ? Let's hear how you get on ..

"Silicone-based brake grease is designed for caliper and wheel cylinder assembly work because silicone is an excellent lubricant for rubber and plastic. It is compatible with all rubber compounds including nitrile, teflon, nylon and other synthetic rubbers. Silcone’s normal working range is -40 degrees F to 400 degrees F. But it does not have the high temperature staying power of a high solids synthetic lubricant, and it is a “wet” lubricant that can attract and hold dirt, making it less suited for lubricating external metal-to-metal "
http://www.tirereview.com/brake-lubricants-101/

http://www.redrubbergrease.com/

Perhaps manufacturers would like our seals to wear prematurely ?
rubber grease is fairly difficult to find these days and many caliper/cylinder repair kits dont have grease supplied..
However, Lucas (as in electrics ) sell WHITE rubber grease, same properties as red

red rubber grease is readily available from halfords ;)

Dalemac wrote:red rubber grease is readily available from halfords ;)

You wont find it in my local Halfrauds, they start to look worried if you ask for anything other than air fresheners or bicycle pumps