To do axle seals on the front you basically take everything apart. If you did the shaft ujoints you are more than halfway there. Driver seal is right net to the pumpkin and passenger is just to the right of the CAD. Past removing shafts you will also need to take out the CAD shift fork and intermediate shaft, drop the carrier. Knock the old out and pull/press the new in. There are a lot of write ups around. Google D30 axle seal replacement.