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Greetings fellow Yammie owners. Took my first shot at changing out the timing belt on my F300. Have a shop manual and looked at several vids. Moving the wire harness ad removing the tray went smoothly as well as lining up the timing marks on all 4 cams and the crankshaft.
I then relieved the tensioner and removed the old belt. So far so good.
I then put the new belt on over the crank and lined up the port side cam marks with the belt reference marks. It was off by a tooth. The same for the SB side. I then attempted to nudge the SB cam a tooth and it shifted almost a quarter turn on me. Evidently it was tension loaded and did not take much for it to move.
Now I need to get all my timing marks back in line where they are supposed to be. I understand that you an move the crank back 60* to get all the pistons recessed into their bores to enable valve movement without damage.
My question(s) are can I rotate the cams by hand or do I need to remove the covers and put a wrench on the camshafts themselves? I plan to remove the spark plugs to eliminate any compression.
Does it matter which direction I rotate the cams or is the rule clockwise only? The SB exhaust cam mark is at about 5 o:clock and the intake at 11 or 12 so there is a little distance to cover.
Please note that when I discovered that the timing was off, I stopped working right there and the crank is still at TDC.
Any help would be appreciated.
I then relieved the tensioner and removed the old belt. So far so good.
I then put the new belt on over the crank and lined up the port side cam marks with the belt reference marks. It was off by a tooth. The same for the SB side. I then attempted to nudge the SB cam a tooth and it shifted almost a quarter turn on me. Evidently it was tension loaded and did not take much for it to move.
Now I need to get all my timing marks back in line where they are supposed to be. I understand that you an move the crank back 60* to get all the pistons recessed into their bores to enable valve movement without damage.
My question(s) are can I rotate the cams by hand or do I need to remove the covers and put a wrench on the camshafts themselves? I plan to remove the spark plugs to eliminate any compression.
Does it matter which direction I rotate the cams or is the rule clockwise only? The SB exhaust cam mark is at about 5 o:clock and the intake at 11 or 12 so there is a little distance to cover.
Please note that when I discovered that the timing was off, I stopped working right there and the crank is still at TDC.
Any help would be appreciated.
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