anyone replaced a crankshaft oil seal

[handymr]

<_< Cleaned sump and ran the engine. The oil is coming from the timing belt cover near the crankshaft, therefore pointing to the cranshaft oil seal needing to be replaced. Rang Ford, they have

quoted me £560 included in this price is 5 hours labour plus new Timing belt kit and Aux belt and seal.

Looked in the Haynes manual and I'm going to need special tools for the timing and inserting the seal.

Has anyone on here replaced this seal, How hard is it to do? I would describe myself as an average D.I.Y mechanic. Any help or procedures would really be appreciated. I don't have £560 to spend and

also i'm worried about the oil getting onto the timing belt and what consequenses this may have ?