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.
1990 Lexus LS 400FACTORY OEM SERVICE PROCEDURE
Torque Specifications
TORQUE SPECIFICATIONS
| Application | Ft. Lbs. (N.m) | |
|---|---|---|
| Axle Nut | ||
| Front | 147 (199) | |
| Rear | 253 (343) | |
| Brake Caliper Bolts | ||
| Front | 87 (118) | |
| Rear | 77 (104) | |
| Brakeline Nuts | 11 (15) | |
| Drive Axle Shaft-To-Differential Bolts | 61 (83) | |
| Steering Knuckle-To-Lower Ball Joint Bolts | 83 (113) | |
| Steering Knuckle-To-Upper Arm Nut | 48 (65) | |
| Wheel Lug Nuts | 76 (103) | |
| INCH Lbs. (N.m) | ||
| 1990-91 Models | ||
| Actuator Mounting Nuts | 48 (5) | |
| Proportioning Valve Bolts | 78 (9) | |
| TRAC Bleeder Plug | 69 (8) | |
| Wheel Speed Sensor Bolt | 69 (8) | |
| 1992 Models | ||
| Actuator Mounting Bolts | 115 (13) | |
| Bleeder Plug | 97 (11) | |
| Proportioning Valve Bolts | 62 (7) | |
| Wheel Speed Sensor Bolt | 71 (8) | |
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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