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.
2004 Lexus SC 430FACTORY OEM SERVICE PROCEDURE
Service Data
Service Data Specification
| Starter | Rated voltage and output power | 12 V 2.0 kW | |
| No-load characteristics | Current | 100 A or less at 11.5 V | |
| rpm | 2,500 rpm or less | ||
| Brush length | STD | 15.0 mm (0.591 in.) | |
| Minimum | 9.0 mm (0.354 in.) | ||
| Spring installed load | STD | 21.5 - 27.5 N (2.2 - 2.8 kgf, 4.9 - 6.2 lbf) | |
| Minimum | 12.7 N (1.3 kgf, 2.9 lbf) | ||
| Commutator | |||
| Diameter | STD | 35.0 mm (1.378 in.) | |
| Minimum | 34.0 mm (1.339 in.) | ||
| Undercut depth | STD | 0.7 mm (0.028 in.) | |
| Minimum | 0.2 mm (0.008 in.) | ||
| Circle runout | Maximum | 0.05 mm (0.0020 in.) | |
| Magnetic switch | |||
| Contact plate for wear | Maximum | 0.9 mm (0.035 in.) | |
| Battery | Specific gravity | at 20°C (68°F) | 1.25 - 1.29 |
| Voltage | at 20°C (68°F) | 12.5 - 12.9 V | |
| Generator | Rated output | 12V 100A | |
| Rotor coil resistance | at 20°C (68°F) | 2.1 - 2.5Ω | |
| Slip ring diameter | STD | 14.2 - 14.4 mm (0.559 - 0.567 in.) | |
| Minimum | 12.8 mm (0.504 in.) | ||
| Brush exposed length | STD | 9.5 - 11.5 mm (0.374 - 0.453 in.) | |
| Minimum | 1.5 mm (0.059 in.) | ||
| Voltage regulator | Regulating voltage | 13.2 - 14.8 V | |
Factory Service Tools
Use the Manual With the Right Hardware
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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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