HIGH PRESSURE DIESEL FUEL PUMPS AND SHOE ARRANGEMENTS

The invention relates to a high pressure diesel fuel pump comprising a pumping assembly and a drivetrain assembly, the pumping assembly comprising a pump housing and a plunger (10) mounted along a pumping axis (A-A'), the drivetrain assembly comprising a drive shaft and a cam arrangement (20) having a cam (22) and a cam follower (23) mounted within a drivetrain housing (not shown), the cam follower (23) comprising a shoe (25) and a roller (24), the plunger (10) being driven in reciprocating linear movement along the pumping axis A-A' upon rotation of the cam arrangement (20), wherein the shoe (25) comprises at least one vibration damping layer (31) disposed below a plunger-engaging surface (27). The invention also extends to an improved shoe (25) for a pumping plunger (10) of a high pressure diesel fuel pump.