Has anyone got a diagram/rebuild instructions of the 19J Cav Dps injector injection Pump 8520A290A type 621. I took the head gasket off to replace but not sure I have put it back correctly. Have blead pump but wont start. Looks line no fuel going to the injectors.

Have a look at www.dieselinjectorpumps.co.uk Lots of info/diagrams.