Bleeding the Fuel System (Tractors Equipped with VP44 Injection Pump)

The fuel system must be bled whenever the fuel tank has been run dry or the fuel filters have been replaced.

This fuel system can only be bled via the electric fuel pump. Bleeding must not be performed at any location on the Bosch VP44 injection pump.

The bleed is automatically performed by a small orifice (A) inside the filter base connected to the overflow valve (B) on injection pump. This system allows air to escape continually through the fuel return line (C) when ignition is ON.

Turn key in main switch to the right as far as the first switch position so that the fuel transfer pump is operating. Keep the pump running for approx. 40 seconds.

A-Bleed orifice in filter base
B-Overflow valve
C-Fuel return line

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