When removing the timing cover on a 307 does the oil pan have to be lowered to get the timing cover off?

 

Not necessarily. The timing cover can be pried off, but getting it back on requires some creativity. There are several methods, and I have done it by trimming the timing cover-to-oil pan seal, liberally applying silicone sealer for its lubricating properties as well as its sealing ability, and prying the cover back into place.

I am sure others will post their experiences with this to give you some additional choices.

 

The cover comes off easily without messing with the oil pan. Reinstallation is a different issue, however, as the rubber seal on the bottom of the cover needs to be compressed to get the cover back in place. The seal is designed for the cover to go on first, then the pan. To reinstall it with the pan in place, you need to trim the "wings" on the ends of the rubber seal and goop the ends up with RTV instead. Be prepared to fight with the cover and seal to get the cover over the two alignment pins on the front of the block. Once you get the pins started, you'll need to use the front cover bolts to pull it into place.