The service manual says to remove the pulley. From my own experience, do not attempt the job without the CORRECT special tool to remove the pulley. There is a different tool to install the pulley. Double check that if rented/purchased that the threads match. The later model cars have metric threads. The tool with SAE threads will appear to fit but in fact will only engage a couple of threads. The result will be stripped threads when attempting to use.
It is vital that the telflon seal be replaced. The seal will need to be heated and streched to fit over the connector.
Consider getting a Chilton's manual from your local autoparts stores. The diagrams and step by step can really fill in the gaps. They are only $20.
FWIIW, if the high pressure hose is leaking from the fitting, it can NOT be serviced. It must be replaced.