Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Lexus LS 430FACTORY OEM SERVICE PROCEDURE
Service Data
WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
SERVICE DATA - POWER STEERING
| POWER STEERING FLUID | |
|---|---|
| Fluid level rise | |
| Maximum: | 5 mm (0.20 in.) |
| Fluid pressure at idle speed with valve closed | |
| Minimum: | 8,336 kPa (85 kgf/cm2 ,1,209 psi) |
| STEERING WHEEL | |
| Steering effort at idle speed | |
| (Reference) | 6 N.m (60 kgf.cm, 53 in.lbf) |
| POWER STEERING VANE PUMP | |
| Vane pump rotating torque | 0.28 N.m (2.8 kgf.cm, 2.4 in.lbf) or less |
| Vane pump shaft and vane pump housing oil clearance | |
| STD: | 0.03 - 0.05 mm (0.0012 - 0.0020 in.) |
| Maximum: | 0.07 mm (0.0028 in.) |
| Vane plate height | |
| Minimum: | 8.6 mm (0.33858 in.) |
| Vane plate thickness | |
| Minimum: | 1.397 mm (0.05500 in.) |
| Vane plate length | |
| Minimum: | 14.991 mm (0.59020 in.) |
| Clearance between the rotor groove and plate | |
| Maximum: | 0.033 mm (0.00130 in.) |
| Spring free length | |
| Minimum: | 33.2 mm (1.307 in.) |
| POWER STEERING GEAR | |
| Total preload (Tie rod rotating torque) | |
| (Turning) | 0.29 - 1.96 N.m (2.9 - 20.0 kgf.cm, 2.57 - 17.35 in.lbf) |
| Total preload in center position (Control valve rotating torque) | |
| (Turning) | 1.35-1.55 N.m (13.77-15.81 kgf.cm, 11.94-13.71 in.lbf) |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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