its a fairly easy job to do, 21mm socket and spanner, 6mm allen key. Take the cam pulley off, line up the cut out in the cam flush to the head, use a mirror and locate pump cut out mark on the pulley, fit belt and adjuster and cam pulley loosely (finger tight) adjust tensioner to required gauge tolerance, then turn pump pulley so u can feel metal to metal sensation, then lock the cam bolt. job done, may require my computer tho if you cant start in a cold morning to fine tune the pump in basic settings. williamsdiesels.com there you will find all you need
Dean Williams
November 2009