Hi,

New to Oliver Tractors.  I just pick up a 1963 Oliver 550 diesel . Needs lots of attention but everything works.  Steering and cosmetics are the worst items. Anyway, right now I'm working on the injector pump. It is  leaking out of the shaft and a part is missing, it's a spring (see attachment, Picture is not my pump).  Can someone give me the part number of the spring and where I can get one. Also, can the average back yard mechanic like me replace the pump shaft seal.

Thank you