2nd Valve Shim change - 59,000 miles

[jfheath]

Removed

 

[Budugly]

I know I don't understand everything you said but I'm sure glad you take the time to post for those that do. I have a real appreciation for the detail you include in your posts...thanks and keep them coming.

Greg

 

[dduelin]

This is an interesting observation. When I reshimmed some left side valves I did get the exhaust camshaft one tooth off despite making my own Sharpie marks and using the stamped ones on the cam gears and closely following shop manual steps. I caught the mistake during an inspection prior to replacing the valve cover. One gear one tooth off is hard to spot with a glance at the stamped marks. I did not detail it like you did in regards to how the slack in the chain is affected by the cam cover journal but it is likely I ran into the same set of circumstances that results in the gear ending up one tooth off. Since the bike will run well enough like this I wonder how many ST1300's are out there running around like this? Post # 7 below:

https://www.st-owners.com/forums/showthread.php?123013-Index-mark-(T1-and-T2)-dont-line-up-with-cam-sproket-marks&highlight=

 

[BakerBoy]

John, I noticed something similar, if'n I caught your meaning correctly. It's a very tight for the chain, even with the slack provided by releasing the tensioner. If some of the slack isn't in both sides of the chain, as the cams are being tightened down, they begin to pull upwards on the chain and one side of the chain comes under tension. I noticed the difficulty and had to reset mine a time or two as well (I forget which sprocket though).

 

[George]

I had a similar problem on lipSTick when replacing the timing belt last spring. My solution was to roll the (right side) cams forward a half tooth so when the belt tried to fall back the extra tooth it landed in the correct slot. Would such have worked for you?

 

[Ranger362]

One thing that got me was, when I had the timing mark in the sight window dead nuts, the timing marks would be a little scewd on the face of the cam gears. But if I turned the motor just a hair they would line up, but the window timing mark would not be perfectly on. I experienced both the chain climbing over intake sprocket and chain bunching up under crankshaft.

 

[sennister]

I also had this issue on my left side. For some reason the right side went without a hitch. I kept fighting with the right side on my bike as well.