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.
2007 Lexus SC 430FACTORY OEM SERVICE PROCEDURE
Service Data
3UZ-FE STARTING - SERVICE DATA
| Rated voltage and output power | 12 V 2.0 kW | |
| No-load characteristics | Current | 100 A or less at 11.5V |
| Brush length | STD | 15.0 mm (0.591 in.) |
| Minimum | 9.0 mm (0, 354 in.) | |
| Spring installed load | STD | 21.5 to 27.5 N (2.2 to 2.8 kgf, 4.9 to 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.) | |
| Commutator undercut depth | STD | 0.7 mm (0.028 in.) |
| Minimum | 0.2 mm (0.008 in.) | |
| Commutator circle runout | Maximum | 0.05 mm (0.0020 in.) |
| Yoke shunt coil resistance | at 20Β°C (68Β°F) | 1.5 to 1.9 Ξ© |
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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