If you're referring to the lower, rear timing belt cover there are bigger things preventing you from pulling it.... The head gasket seals it at the top and because of the oil seals in it you can't slide it in and the up (in which case you'd still have to loosen the pan but you'll never get it to seal without pulling it and thoroughly cleaning it).
The short version you don't want to hear: pull head & pull oil pan.
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum.
If you're so inclined I'm always more than happy to accept tips via PayPal. 
Tip Jar ---> 
|