This might help....
Did mine yesterday, alternator cost $96.00. The engine does not need to come apart, just some items on firewall above the alt. and coolant resv.
go to the dealership and get it fixed
steps to replace alternator on 2003 ford d150
How to replace alternator on a 2003, Ford F-350, 6.0 ltr.
at is the cost to replace a blower motor on a ford focus
need to replace alternator on a ford expediting 2003
how to change the lug nuts in the front of a 2003 ford focus
how do i change the alternator in my 2001 ford focus?
Material and labor... about $400.
on raiht between the motor and the fire wall
just replaced my alternator on my 54 plate ford focus cost me 15 gbp used these can also be located on ebay for as little as 17.99 gbp
loo on www.focushscks,com they have the full detail on how to.