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Ford Taurus / Sable Power Steering Pump & Gear Specifications - VAPS, SHO

Ford Taurus/Sable power-steering spec sheet: 16:1 gear ratio, 2.5-pint (1.2L) fluid capacity (MERCON XT-2-QDX), pump relief 1300-1590 psi, analyzer fittings torqued to 20 Nm (15 lb-ft).

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This document is a power steering specifications reference sheet for the Ford Taurus and Mercury Sable, covering vehicles with VAPS (Variable Assist Power Steering). It lists static steering wheel turning effort (2.27 kg / 5.0 lb for Taurus/Sable with VAPS) and detailed power steering pump specifications for three engines: the 3.0L (2V) with HBC-LC pump, the 3.0L (4V) with HBD-BM pump, and the 3.4L (4V) with ZUA pump. For each pump it gives minimum flow at 5100 kPa (740 psi), minimum and maximum relief pressures (e.g., 8960 kPa / 1300 psi minimum for the 3.0L engines; 10135 kPa / 1470 psi for the 3.4L), and maximum free flow at 1500 rpm. Steering gear operational specs include a 16:1 gear ratio, 2.75 turns lock-to-lock (2.48 for SHO), 2.5 pints (1.2L) fluid capacity, input shaft rotation effort of 0.78-2.03 Nm (7-18 lb-in), and tie rod articulation effort of 9-45 N (2-10 lb). A torque spec of 20 Nm (15 lb-ft) is given for power steering analyzer-to-adapter fittings, and Motorcraft MERCON ATF (part number XT-2-QDX) is specified as the power steering fluid.

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Frequently asked questions

What power steering fluid does the Ford Taurus/Sable use?
Motorcraft MERCON Multi-Purpose (ATF) Transmission Fluid, part number XT-2-QDX, meeting Ford specification MERCON.
What is the power steering fluid capacity for the Taurus/Sable?
2.5 Pints (1.2L), including the steering pump.
What is the power steering pump relief pressure for the 3.0L engines?
Minimum relief pressure is 8960 kPa (1300 psi) and maximum relief pressure is 10205 kPa (1480 psi) for both the 3.0L (2V) HBC-LC pump and 3.0L (4V) HBD-BM pump.
What pump does the 3.4L (4V) SHO engine use and what are its specs?
The ZUA pump, with minimum flow of 7.57 L/min (2.0 gal/min) at 5100 kPa (740 psi), minimum relief pressure of 10135 kPa (1470 psi), maximum relief pressure of 10963 kPa (1590 psi), and maximum free flow of 8.7 L/min (2.3 gal/min) at 1500 rpm.
How many turns lock-to-lock does the steering gear have?
2.75 turns for all models except SHO, and 2.48 turns for the SHO, with a 16:1 gear ratio.

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