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 IS 300 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Torque Specification
Torque Specification
| Part tightened | N.m | kgf.cm | ft.lbf | |
|---|---|---|---|---|
| Drive belt tensioner absorber x Drive belt tensioner arm | 20 | 200 | 14 | |
| Drive belt tensioner absorber x Drive belt tensioner bracket | 20 | 200 | 14 | |
| Generator x Water pump | 40 | 400 | 30 | |
| Generator x Cylinder block | 40 | 400 | 30 | |
| Bearing retainer x Drive end frame | 3.0 | 31 | 27 in.lbf | |
| Rectifier end frame x Drive end frame | 4.5 | 46 | 40 in.lbf | |
| Rectifier end frame with wire clip x Rectifier end frame | 5.4 | 55 | 48 in.lbf | |
| Generator pully x Rotor | 110.5 | 1,125 | 81 | |
| Rectifier holder x Coil lesd on rectifier end frame | 2.9 | 30 | 26 in.lbf | |
| Voltage regulator x Rectifier end frame | 2.0 | 20 | 18 in.lbf | |
| Voltage regulator x Rectifier holder | 2.0 | 20 | 18 in.lbf | |
| Brush holder x Rectifier holder | 2.0 | 20 | 18 in.lbf | |
| Brush holder x Voltage regulator | 2.0 | 20 | 18 in.lbf | |
| Rear end cover x Rectifier holder | 4.4 | 45 | 39 in.lbf | |
| Plate terminal x Rectifier holder | Nut | 4.4 | 45 | 39 in.lbf |
| Bolt | 3.9 | 40 | 35 in.lbf | |
| Terminal insulator x Rectifier holder | 6.5 | 67 | 58 in.lbf | |
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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