2003 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Torque Specification

TORQUE SPECIFICATIONS

Part tightened N.m kgf.cm ft.lbf
Starter
Terminal 30 nut, Terminal C nut x Terminal bolt 17 173 13
End cover x Magnetic switch housing 3.6 37 32 in.lbf
End cover x Brush holder 3.8 39 34 in.lbf
Starter housing x Magnetic switch 9.3 95 82 in.lbf
End cover with starter yoke x Starter housing 9.3 95 82 in.lbf
Lead wire of starter yoke x Terminal C 5.9 60 52 in.lbf
Starter assy x Cylinder block 37 380 27
Starter cable x Starter assy 9.8 100 87 in.lbf
Throttle body x Intake manifold 18 185 13
Generator
Bearing retainer x Drive end frame 3.0 31 27 in.lbf
Generator pulley x Rotor 110.5 1,125 82
Lead wire (drive end frame) x Rectifier holder w/ rectifier 2.94 30 26 in.lbf
Rectifier end frame x Drive end frame: w/Cord clip 5.4 55 48in.lbf
Rectifier end frame x Drive end frame: w/o Cord clip 4.5 46 40 in.lbf
Voltage regulator assy x Rectifier holder 2.0 20 18 in.lbf
Brush holder assy x Rectifier holder, Voltage regulator 2.0 20 18 in.lbf
Rear end cover x Rectifier end frame 4.4 45 39 in.lbf
Plate terminal x Rectifier holder, Rectifier end frame 3.8 39 34 in.lbf
Terminal insulator x Rectifier holder 6.5 66 58 in.lbf
Generator x Cylinder block 39 400 29
Vane pump pulley x Vane pump 43 440 32
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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