Engine/Transmission (1994 - 1998) Front diff. driveshart seal

[MHalloran]

Discovered my front driveshaft seal into the Dana 60 on my 1996 Club Cab is leaking. How easy to replace this seal? Is there some kind of retainer or clip inside the differential holding that end or will this driveshaft just slide out once I unbolt the other end at transfer case? Any special tools needed? Thanks for input fellas... ...