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.
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HOMESERVICE MANUALSLEXUS1998SC 300REPAIR AND DIAGNOSISENGINE MECHANICALCOOLING SYSTEM (MECHANICAL)HYDRAULIC COOLING SYSTEMSTORQUE SPECIFICATIONS
1998 Lexus SC 300
Torque Specifications
1998 Lexus SC 300SECTION Torque Specifications
TORQUE SPECIFICATIONS
| Application | Ft. Lbs. (N.m) | |||
|---|---|---|---|---|
| Drive Belt Idler Pulley Bolt | 27 (37) | |||
| Fan-To-Hydraulic Motor Nut (1) | 11 (15) | |||
| Hydraulic Motor Cover-To-Hydraulic Motor Housing Bolt | 21 (28) | |||
| Hydraulic Pump Front Housing Bolts | 15 (21) | |||
| Hydraulic Pump Mounting Bolts | ||||
| 12 mm Bolt Head | 12 (16) | |||
| 14 mm Bolt Head | 22 (30) | |||
| Hydraulic Pump Pulley Retaining Nut | 43 (59) | |||
| Hydraulic Pump Solenoid Valve | 28 (39) | |||
| Pressure Tube Fitting | 26 (35) | |||
| Pressure Port Union | 51 (69) | |||
| Pulley Retaining Nut | 38 (51) | |||
| Rear Housing-To-Front Housing Bolt | 34 (46) | |||
| Solenoid Valve | 44 (60) | |||
| Spool Valve End Plug | 14 (19) | |||
| Union Bolt | 47 (64) | |||
| INCH Lbs. (N.m) | ||||
| Hydraulic Motor-To-Shroud Bolt | 43 (4.9) | |||
| Oil Cooler Nut | 69 (7.8) | |||
| Shroud Assembly-To-Radiator Bolt | 43 (4.9) | |||
| Suction Port Union Bolt | 115 (13.0) | |||
| Timing Belt Cover Bolts | 74 (8.4) | |||
|
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RENDER: 1.0x
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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.