Maintenance & Repairs

The early (’47-’48) 8N steering box had a 1/4″ pipe plug on the upper right side of the box. It could also be filled by removing the nut that holds the steering wheel on and pouring the oil down the hollow steering shaft where it flowed out a cross drilled hole and over the upper bearing (very slow process).

Originally, the 8N used 90w (GL-1) gear oil for the transmission, rear gears and hydraulics common sump. Capacity is 5 gallons. Many people today recommend using Ford 134 oil.

The 8N hydraulic system is simple yet elegant and works great when properly adjusted and maintained.

Can I upgrade my ’48 to use the newer style 8N steering box?

Why is water leaking out of my rear tires?

How do I remove the front axle kingpin?

Do I need to add a lead substitute to my gas?

Why does my 8N run for a few minutes and then die?