2004 Lexus GX 470FACTORY OEM SERVICE PROCEDURE

Service Data

Service Data Specifications

Starter Rated voltage and output power 12 V 2.0 kW
No-load characteristics Current 100 A or less at 11.5 V
Brush length Standard 15.0 mm (0.591 in.)
Minimum 9.0 mm (0.354 in.)
Spring installed load Standard 21.5 - 27.5 N (2.2 - 2.8 kgf, 4.8 - 6.2 lbf)
Minimum 12.7 N (1.3 kgf, 2.9 lbf)
Commutator  
Diameter Standard 35.0 mm (1.378 in.)
Minimum 34.0 mm (1.339 in.)
Undercut depth Standard 0.7 mm (0.028 in.)
Minimum 0.2 mm (0.008 in.)
Circle runout Maximum 0.05 mm (0.0020 in.)
Field frame  
Shunt coil resistance at 20°C (68°F) 1.5 - 1.9Ω
Battery Maintenance-free  
Voltage at 20°C (68°F) 12.5 - 12.9 V
Generator Rated output 12V 130A
Rotor coil resistance at 20°C (68°F) 2.3 - 2.7 Ω
Slip ring diameter Standard 14. - 14.4 mm (0.559 - 0.567 in.)
Minimum 14.0 mm (0.551 in.)
Brush exposed length Standard 10.5 mm (0.413 in.)
Minimum 4.5 mm (0.177 in.)
Voltage regulator Regulating voltage 13.2 - 14.8 V
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.