Fuel injection pump 320/06620 JCB 444, genuine

Fuel injection pump 320/06620 is a genuine JCB part for the machines with the JCB Dieselmax 444 engine.

The fuel injection pump is the heart of a diesel engine: it raises the fuel to the high pressure the engine needs and delivers it to the injectors in the right quantity at the right moment. A mechanical distributor pump feeds the cylinders in turn and sets the injection timing itself, while in common rail systems the pump pressurises the shared rail and the engine control unit manages injection. Signs of pump failure are hard starting or no start, loss of power, uneven idle, black smoke and the engine bogging under load. The precision parts inside the pump are lubricated by the fuel, so water and dirt in the fuel are the pump's worst enemies.

Specifications

Compatibility

According to the product card, 320/06620 is a fuel injection pump. The card also lists 28568252, 28435244. Fit is confirmed by the part number. The catalogue also has the OEM version of this part. Other parts are in Fuel injection pumps.

Fitting

Before removing the pump, turn the engine until the timing marks line up and mark the position of the pump gear. Cap the fuel line ends at once. Fit the new pump in the timed position following the engine maker's instructions and tighten the connections with new seals to the specified torque. Then bleed the fuel system, without cranking for long on the first start. Once the engine runs, check for fuel leaks, idle, smoke and power, and read the fault codes on electronic systems. In the first hours, keep an eye on fuel consumption and exhaust smoke.