Cam chain tensioner

[Incubus]

The Yamaha parts fiche lists several replacement parts for the innards of the cam chain tensioner for a XS1100F. That means in my mind (weird, scary and confusing place that it is) that this thing comes apart. My cam chain tensioner is binding instead of springing back easily, so I'd like to take it apart and clean it out. Can anyone tell me how this comes apart? I hate to just start yanking on stuff to see if it separates.

Thanks,

Patrick

[skids]

Yeah. take off the ignition cover and turn the crank clockwise (there is an engraved arrow) until you stop at the C mark. remove the two bolts. That it it for removal. If you unlock the buddy nut and unscrew the stopper bolt, the push-ram will fly out and bounce off of your forehead and make you feel "silly." (Don't ask.)

[Incubus]

Thanks, Skids. What actually happened was I removed the stopper bolts and then twisted the push ram with a pair of robogrips until it finally came free. I cleaned and polished the push ram, sprayed silicon lubricant into the adjuster body and pushed the push ram into and out of the body until it came out clean and the push ram moved easily into and out of the body.

Now, I believe, the push ram just might hit me in the forehead. It's disturbing what 15 years in the elements will do to a simple piece of machinery.

I was just afraid there might be a c-clip or something on the shaft that the parts fiche didn't show.

Thanks.

Patrick

[mro]

originally posted by skids
fly out and bounce off of your forehead and make you feel "silly." (Don't ask.)

At least it's not a sharp pointy thing
Does kinda suck trying to find it when it flies across the shop tho..

mro

[HobbyMan]

beats a sharp stick in the eye

[trbig]

If you unlock the buddy nut and unscrew the stopper bolt, the push-ram will fly out and bounce off of your forehead and make you feel "silly." (Don't ask.)

These aren't supposed to do that. The plunger should bottom out, but stay together. That's one way to check if your chain is stretched to the limit. Adjust your chain normally, then tighten the retaining nut. Then take off the adjuster, loosen the retaining nut and keeper... and see if it pops out further. There is an official measurement for this for the limits, but it is a quick check. But the plunger SHOULD stay within the adjuster body. That way there's no danger of motor ingestion at it's limit.

Tod

[mro]

These aren't supposed to do that

Well, if ye be but only a little Xsive
and your in the process of reassembly
(cause you took it all apart for a clean and inspection )
and your finger mysteriously should slip off the "plunger" while it's almost full depressed..........
sucker can really fly


mro

[Ken Talbot]

Or, if you had the assembly sitting in your hand, and if you wondered if it came completely apart, and if you kept unscrewing the keeper bolt....

[Ken Talbot]

So, just because we can, here is a visual that gives a clear picture of why the plunger can achieve such a distance when the stopper bolt is removed. You have the spring under quite a bit of compression, the stopper bolt comes free of the little hook at the end of the plunger, and wallah - thar she blows!