Need help with Case IH 235 fuel injector pump

[kdm004]

Hi all can any one direct me to a site that would have the fuel injector pump schematic for a case 235 . I can get the parts list for the injector pump but not for the drive assembly that drives the pump and or makes it work . I would also like to find a service manual for the injector pump as the pump I have wont pump fuel and I need to find out how to disassemble the pump and drive case . thanks KDM004