Patent ID: 7395815

Claim:
A fuel injection pump comprising: a pump housing; a pumping arrangement associated with the pump housing; wherein the pumping arrangement includes a pumping plunger and a plunger drive arrangement, the pumping plunger having a first end reciprocably received within a plunger bore provided in the pump housing and a second end coupled to the plunger drive arrangement; and a biasing spring having first and second spring ends, the first spring end coupled to a spring plate member associated with the pump housing and the second spring end coupled to the plunger drive arrangement; wherein the pump housing includes first and second portions aligned on a common axis (A), the first portion including a further bore in which at least an upper portion of a locking pin is receivable and wherein the spring plate member defines a support arrangement for supporting a lower end portion of the locking pin; and wherein the spring plate member comprises first and second axially spaced annular members, each of the first and second axially spaced annular members being provided with a respective aperture.