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 ES 300FACTORY OEM SERVICE PROCEDURE
Torque Specification
TORQUE SPECIFICATION
| Part Tightened | N.m | kgf.cm | ft.lbf | |
|---|---|---|---|---|
| Lead wire of field frame x Magnetic switch | 5.9 | 60 | 52 in.lbf | |
| Starter x Engine: | Bolt Nut |
42 9.8 |
429 100 |
31 7 |
| Starter Assy | ||||
| Commutator end frame assy x Motor terminal starter kit | 6.0 | 61 | 53 in.lbf | |
| Repair service starter kit x Motor terminal starter kit | 7.5 | 77 | 66 in.lbf | |
| Lead wire x Terminal C of starter | 6.5 | 66 | 58 in.lbf | |
| Generator x Engine (see GENERATOR ) : | Bolt A Bolt B |
58 18 |
592 184 |
43 13 |
| Alternator wire | 9.8 | 100 | 7 | |
| Generator assy | ||||
| Rectifier end frame x Drive end frame | ||||
| For without cord clip | 4.5 | 46 | 39 in.lbf | |
| For with cord clip | 5.4 | 55 | 47 in.lbf | |
| Rectifier holder x Coil lead on rectifier end frame | 2.9 | 30 | 26 in.lbf | |
| Voltage regulator x Rectifier end frame | 2.0 | 20 | 18 in.lbf | |
| Brush holder x Rectifier end frame | 2.0 | 20 | 18 in.lbf | |
| Rear end cover x Rectifier holder | 4.4 | 45 | 39 in.lbf | |
| Plate terminal x Rectifier holder | 3.9 | 39 | 35 in.lbf | |
| Terminal insulator x Rectifier holder | 4.1 | 42 | 36 in.lbf | |
| Generator pulley x Rotor | 111 | 1,125 | 81 | |
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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