Here are a couple of options for Defender Service Manuals.
Online viewing:
http://workshop-manuals.com/landrover/
Downloadable PDF Manuals
http://www.landroverweb.com/landrover/pdf-land-rover-manuals/defender-puma-td5-300tdi-200tdi-turbo-diesel-v8-petrol/
Online viewing:
http://workshop-manuals.com/landrover/
Downloadable PDF Manuals
http://www.landroverweb.com/landrover/pdf-land-rover-manuals/defender-puma-td5-300tdi-200tdi-turbo-diesel-v8-petrol/