D74T primary fuel pump.

I have a fuel leak at the fuel pump. Just dripping slowly from a small port. I presume an internal seal. On the other side of the
pump is another small port where someone has brazed up the fitting. I have been through all manuals and parts book but can’t
find any info. Anyone able to help?
Rgds Ray

The pump is gear driven so fuel must not be allowed to get into oil. There are two doughnut/conical shaped packings on the shaft between the drive gear (oil side) and the pumping gears (fuel side). They are kept compressed around the shaft by a spring between them and the resulting space is a drain area so leakage from either side has a way to drain away before it causes problems. The drain port is usually connected to a small tube that carries any drips down to left front corner of the engine though it sounds like yours may be disconnected somehow.

Pictures would help!

The seals are available and the process of replacing them isn’t too demanding.

Thank you for that. Appreciate your help.