How to install camshaft woodruff (offset) key - pics
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I decided to correct my timing chain stretch by installing an offset or woodruff key. The FSM on this is pretty straight forward so I just included some pics of how the woodruff key looks in place. The pics aren't as clear as I would have liked but I hope this helps someone.
Pic 1 is the old woodruff key still in place. It's just above the timing mark. Pic 2 is with the key removed. Pic 3 is a picture of the old key. I had to use vice grips to yank it out. Pic 4 is the new key and you can see how it is offset via a flange. My timing was 4 degrees off at the crank. Now it is spot on. I swear the car is a little faster. Next job - set injection pump timing. Scott |
Removing the tensioner on the side of the engine makes things much more easy.
The offset should be on the left to advance. |
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This really isn't that difficult a job. I had to gently tap on the camshaft gear to remove it and reinstall it but otherwise everything went along without a hitch. Make sure you support the camshaft gear with a bungee cord so you never lose tension. I also put vice grips on the chain as an extra precaution. |
Just don't move the sprocket any further than completely necessary to get the key out/in. If you have ever seen a 617 camshaft without the sprocket, you would know how close you were to loosing the sprocket in the second picture.
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I don't follow you. I think I had the sprocket completely off but I can't remember for sure. But at any rate, it was supported by a bungee cord so there was always tension on the chain. What do you mean by "lose the sprocket?" |
As in the sprocket comes off the camshaft.
I did my key about two years ago and only recently realized how close I came to dropping the sprocket into the chain valley. |
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That's why I hooked the bungee cord to the sprocket before I removed it. That way it won't go anywhere - even if it comes off - and you will always have tension on the chain. |
Need to do this myself, to insert new key, did you have to move sprocket? Pull out from rear? Then reinstall? Not clear where key is located. Thanks.
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The key will be at around 2 o'clock on the shaft. it is OK to move the sprocket backwards the 2 or 4 degrees you'll need to get the sprocket back on. |
Thanks, dannym. Start with cam at TDC? Will save this.
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If anybody is home, I have a couple of questions...
1. With the marks on the CAMshaft lined up, I am -4 deg at the CRANKshaft. So my chain is 4 deg yanked right? so I get a 4 deg woodruff, or a 2 deg key for the CAMshaft? 2. Do I put the key in facing to the left or the right? I don't know if I want to advance or retard. (that didn't sound right, but you know what I mean?) I'm guessing I want to advance it. |
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It's a 602 in a 92 300D(not a 617).
If it is 4 deg at the crankshaft, that's a 2 deg woodruff right? And since it is stretched, that means the valves are opening late, so I need to advance the timing, so I put the woodruff to the left. |
Bump
Good info.
Any fear of the cam moving (rotating) when the gear comes off? |
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