General Specifications
| Item | Specification |
|---|---|
| Power Steering Gear | |
| Ratio | 20:1 |
| Static steering wheel turning effort | |
| Expedition | 5.0 Nm (44 lb-in) |
| Navigator | 4.0 Nm (35 lb-in) |
| Tie-rod articulation torque | 5 Nm (44 lb-in) |
| Turning effort | |
| Expedition | 2.68 kg (5.9 lb) |
| Navigator | 2.14 kg (4.7 lb) |
| Turns of steering wheel (lock to lock - linkage disconnected) | 3.75 |
| Type | Rack and Pinion |
| Power Steering Pump | |
| Flow (Expedition) | 11L ± 0.8L @ 345 kPa (3.0 gpm ± 0.2 gpm @ 50 psi) engine speed @ 1, 200 RPM 9.5L ± 0.8L @ 345 kPa (2.6 gpm ± 0.2 gpm @ 50 psi) engine speed @ 3, 000 RPM |
| Flow (Navigator) | 11L ± 0.8L @ 345 kPa (3.0 gpm ± 0.2 gpm @ 50 psi) engine speed @ 1, 200 RPM |
| Minimum capacity | 6.6L @ 5, 171 kPa (1.6 gpm @ 750 psi) engine speed @ 500 RPM |
| Relief pressure | 8, 963-10, 204 kPa (1, 300-1, 480 psi) |
| Power Steering Purge Vacuum | |
| Minimum vacuum | 67-84 kPa (20-25 in-Hg) |