Manual Oil Pressure gauge for TN75DA

[Polo]

I own a New Holland TN75DA. I am having some erratic problems with my oil pressure light so I need to check the pressure with a manual gauge. I purchased a gauge with multiple adaptors at an automotive shop but none of the adaptors fit. Does anyone know of a tester kit that does provide an adaptor to fit a TN75DA or by chance know the thread and diameter of the oil pressure port.

Thanks

 

[MikePA]

Duplicate of this thread. Closed.