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Author Topic: Install cam sprocket CB550k  (Read 1640 times)

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Offline inlinefour

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Install cam sprocket CB550k
« on: August 09, 2010, 01:31:50 PM »
I'm attempting to install the overhead sprocket on the cam. I followed the advise given on the tips but I can not get the sproket up to the position high enough to sit on the slot. The chain appears to be too tight. Any comments.

I have the tentioner backed off but even with it backed it's spring loaded and it still presses on the cam chain.

Bob
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Offline Fritz

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Re: Install cam sprocket CB550k
« Reply #1 on: August 09, 2010, 02:01:03 PM »
Quote
I have the tentioner backed off but even with it backed it's spring loaded and it still presses on the cam chain.

Hi Bob!

By "have the tentioner backed off", you mean that you turned the adjusting screw counterclockwise about 90 degrees, so that you clearly feel the force of the springs and fastened it in this position with the lock nut, right?

If the tensioner is not broken, the cam chain should be free now and have just a little slack when it's sitting on the sprocket while it is mounted on the camshaft.
I'd check that the chain is sitting correctly on the crank shaft and that the front chain guide is facing in the right direction (front). It's possible to mount it backwards... ;)
« Last Edit: August 10, 2010, 05:33:33 AM by Fritz »
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Offline Kevin400F

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Re: Install cam sprocket CB550k
« Reply #2 on: August 09, 2010, 03:39:23 PM »
With the lock nut of the cam chain adjuster bolt backed off, the tensioner spring is able to pull the slipper into the full "tight" position, so when you're trying to install the cam chain you're fighting the full force of the tensioner.  You need to push the tensioner blade down (flatter...or "toward the rear") by hand, then tighten the lock nut.  This will create some slack in the chain and you can install the sprocket onto the cam.  Once everything is in position, loosen the lock nut to let the tensioner do its thing.
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Offline OldSchool_IsCool

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Re: Install cam sprocket CB550k
« Reply #3 on: August 09, 2010, 03:51:09 PM »
Also make sure the chain is on the correct side of the front guide (part #6).  As you can see by this diagram, the front guide should be INSIDE the chain loop with the slippery side pointed forward.

« Last Edit: August 09, 2010, 03:54:07 PM by OldSchool_IsCool »
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Offline Gordon

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Re: Install cam sprocket CB550k
« Reply #4 on: August 09, 2010, 04:46:27 PM »
Quote from: OldSchool_IsCool on August 09, 2010, 03:51:09 PM
Also make sure the chain is on the correct side of the front guide (part #6).  As you can see by this diagram, the front guide should be INSIDE the chain loop with the slippery side pointed forward.



That's usally the culprit when this issue comes up. 
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Offline inlinefour

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Re: Install cam sprocket CB550k
« Reply #5 on: August 10, 2010, 09:14:10 AM »
Yep I had the front chain guide installed facing back. Reversed the works and the whole thing went back together as smooth as silk.

Thanks Guys, Bob
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