How does the lower front crank gear come off?
[Randy Starkie] Once you remove the harmonic balancer you just pull the gear off. Remember to replace the pieces on each side of the gear when you reassemble and be sure that the cog on the back of the gear is engaged properly with the slot in the crankshaft. [A cautionary tale] I just did a 120K mile service on our ’90 745 (B230F). I did the oil seals (and water pump–how’s that for anal!) as long as I was doing the timing belt. Two things about that. First, a good impact wrench makes the crankshaft pulley nut a breeze, even with an automatic trans. The crankshaft barely moves, even with nothing holding it in place. Now the bad news. I think I may have slightly scratched the camshaft in pulling the seal. There is oil on the water pump coming from the vicinity of the top, front of the head, on the order of a drop or two per minute. To be sure I didn’t screw it up, I redid both valve cover gasket and camshaft seal the next day (cursing all the way). I felt a slight scratch on the shaft
