guam_napz Posted November 23, 2007 Report Share Posted November 23, 2007 On the 720 cam gear theres three numbers 1,2,3, I know that 2 is normal,1 is for retard and 3 is for advance. On my truck it's retard so i want to advance it to the number 3 has anybody ever did this. Quote Link to comment
datzenmike Posted November 23, 2007 Report Share Posted November 23, 2007 Yes, it's the same as the procedure for an L series. How do you know it's retarded? Did you set at TDCComp. and look at the relation of the V in the sprocket to the horizontal etch mark on the cam retaining plate? If you did, loosen the cam sprocket (place a ratchet extension through the spokes in the sprocket to hold it from turning) make sure you are at TDCComp and drive a wooden wedge between the upper guides and lock the chain so it can't fall down and release the tensioner. Remove the cam bolt and sprocket. Turn the sprocket to the #3 position and install on the cam dowel. This may take a couple of tries to get it on the right tooth but it should line up with the dowel. (or very close, as it's now 4 degrees advanced) you may have to wiggle the cam very slightly to get it aligned. I find that often the sprocket is somewhat difficult to lift up onto the cam. I get the retaining bolt and washer started and it draws it on as you carefully tighten it up. Be sure that the cam dowel fits into the sprocket when tightening. Remove the wedge and lock the sprocket with the extension and tighten the retaining bolt to 100 ft lbs. A wedge can be made from a piece of wood 1 " thick and 6 1/2" long tapering from 1 3/4" down to 1 1/4". Be sure to tap it in firmly BEFORE removing the sprocket. Quote Link to comment
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