Timing belt replacement.

[goz007]

The V6 in the SZ is a little different were the crank pulley has no keyway & is held in place purely by the tension of the crankshaft gear bolt,(Duetz Diesel engines are the same- no keyways on crankshaft or camshaft-timing gears held in place by bolt tension)in saying that though it(cranckshaft gear)is not loosened or removed on cam belt replacement, how the timing moves(& it's probably not even 1tooth)is as the new belt is loading up with the tensioner as the cams are pinned but the crank isn't, it can allow a slight movement in the crankshaft.....l've also done timing belts without pinning the crank(I don't like to but sometimes u have no options)anthor trick I will use as well as putting marks on the cams & crank(to the heads & block or flywheel)i will also put marks on the teeth(crank & cams)to the old belt, then transfer the marks from the old belt(through a tooth count) to the new belt, that way i have double reference points.