I've got the TCT knocking.

Ideally I would like to DIY repair as I don't really want to spend £200+ on an item that could fail again!

 

If its due, change the oil and look for somewhere to sandblast it

do it yourself

I say DIY, I wont even do my own and there is a sandblaster up the road!

but the oil change mad a difference on mine, still needs doing though

 

I've just had an oil change on it, a little quieter but not much difference!
Was going to go the sandpaper route as it's a daily driver and I can't afford to take it off the road for anytime!

 

I 'hand blasted' mine on the weekend, I have no technical skills and even I found it pretty straight forwards.

Grab some 80 grit from halfords or B&Q, Aluminum Oxide paper done the trick for me. Sand the worm gear until its appearance is dull in appearance as highlighted in this guide: TCT: Repair/Replace

One thing I will say though is be wary when removing the TCT unit itself. It will uncompress and the internal parts will scatter into the engine bay/driveway if you don't hold onto it when removing.

Seems happy now though, have done about 300 miles since and its quiet as a mouse.

 

Knocking?

 

Valve clearances?

I have a friend who has a Honda CBF125, said it was making 'knocking sounds' about a week before it died. Hadn't topped the oil up.

 

My TCT is making more noise than it should be atm, and I've been reading about sanding the worm gear but can't find anyone local willing to sand blast these small parts. Sounds like DIY is the way to go. I did wonder is you could use an attachment on a Dremel to do this job?

 

You just need to rough up the worm gear to get rid of its smooth shininess, doesn't matter how. I did mine with valve paste (£3 off ebay IIRC); just worked it in by hand for 5 minutes. Seemed to work.

 

Valve clearances have been done as well as oil change.
Removed the TCT, pulled it apart, put it back together and now, no knocking sound.
Didn't sand or anything, it was very lose when taking it off so by winding it back it seems to have fixed it.

I would give it a go before sand blasting or sanding down.

Very happy now

 

Cheers for the tip Dembo.
I'm going to give that a try this weekend to see if I can finally get rid of that annoying TCT noise