1997 Ls400 Replace Camshaft/crankshaft Seals

[latintxn54]

Greetings to the serious LS400 shadetree mechanics out there! Preparing to perform this challenging yet do-able task of replacing the timing belt & water pump on my LS400 which has just passed the 100k mile mark. From all I've read & researched, it's recommended but not mandatory that the 2 camshaft seals & crankshaft seals also be replaced. My question. Is removing the 3 seals a difficult process? Are there special tools I'll need to remove? Thanks in advance for any replies. V. Gonzalez in Katy, Texas.