You have a lot of reading to catch up on, my friend.Can you explain how the stock CCT actually works...how how in theory it should work? If its auto...what's with an adjustable screw?
The one on the left shows a fully extended CCT with the set screw mod in place, and is an earlier version of the CCT as indicated by the slightly thicker bottom of the plunger, the one on the right shows a fully compressed CCT with the Allen bolt adjuster in place as it comes from Yamaha when ordering a replacement-a revision of the original indicated by the slightly thinner bottom of the plunger-and both are pretty much POS in my opinion(trust me, I've had both versions).So I'm still confused as to how this works. How does it self adjust with oil pressure if the screw is also used to adjust?
I did notice when I moved my screw a bit it was moving as I rev the engine. So when oil pressure is adjusting it automatically it's also turning the screw? So adjusting the screw is pointless as oil pressure will change it anyway?
The only think the screws good for is if the plunger gets stuck and turning it to unstick it?
Also the above photo. How are these different? Has one been modified?
But if the issue is that the plunger gets "stuck" which then results in excessive cam chain slack (and thus noise), the cause of the "sticking" needs to be resolved by Yamaha. I like the concept of a CCT that applies only the needed tension, and does so automatically. I wonder what "real changes" were made to the different versions to address the true issue of a sticking plunger or a plunger that fails to properly move into position. The answer might be "none".As to operation, the adjusting screw sits atop a half nut that makes contact with the top of the plunger, and yes, if you adjust the Allen screw inside without locking the adjustment in place with a set screw, it will automatically re-adjust itself to whatever position it thinks is correct tension-and therein lies the issue with these things..