I have a 1993 jeep grand cherokee 4.0l and need a diagram for the timing chain links. i was told that there is to be 15 links between marks and then told 20. need help please.thanks

I don't have a diagram I can post, but once you install the new chain and have the two timing marks pointing toward each other, then turn the Crankshaft around twice and see if the two timing marks still line up. Remember, the crankshaft turns two times for every one time the camshaft turns.

I understand the 15 vs. 20, but that's neither here nor there. What the Factory Service Manual states is there should be 15 "pins" between the timing marks when the timing chain is set up properly. (?) The links you speak of aren't what you're counting...it's the pins in the chain. In other words, for each link of the Timing Chain, there are two pins, holding it in place...or a total of 48 pins on the length of the entire timing chain. Personally? When I install a timing chain, I rotate the crankshaft around twice to see if the timing marks still match up, and before putting everything back together, I start the Engine for a brief few seconds thereby knowing after reassembling everything, the Engine WILL Start.

If you're still concerned about the 15 pin thing, stop by your local Dealership and look in the Factory manual in Section 9 (Engine), Page 36 for a picture of the 15 so-called "chain-pins."

Hope this helps,

~00 Buck~

"Still living on the Right Side of Dirt..."