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.
Lubrication (H4SO): General Description: Specification
| Lubrication method | Forced lubrication | ||||
|---|---|---|---|---|---|
| OIL PUMP | Pump type | Trochoid type | |||
| Number of teeth | Inner rotor | 9 | |||
| Outer rotor | 10 | ||||
| Outer rotor diameter x thickness | mm (in) | 78 x 7 (3.07 x 0.28) | |||
| Tip clearance between inner and outer rotors | Standard value | mm (in) | 0.04 - 0.14 (0.0016 - 0.0055) | ||
| Side clearance between inner rotor and pump case | Standard value | mm (in) | 0.02 - 0.07 (0.0008 - 0.0028) | ||
| Case clearance between outer rotor and pump case | Standard value | mm (in) | 0.10 - 0.175 (0.0039 - 0.0069) | ||
| Performance at 80°C(176°F) | 600 rpm | Discharge pressure | kPa (kg/cm2 , psi) | 98(1.0, 14) | |
| Discharge rate | (US qt, Imp qt)/min. | 3.2 (3.4, 2.8) | |||
| 5,000 rpm | Discharge pressure | kPa (kg/cm2 , psi> | 294 (3.0, 43) | ||
| Discharge rate | (US qt, Imp qt)/min. | 32.6 (34.4, 28.7) | |||
| Relief valve working pressure | kPa (kg/cm2 , psi) | 490 (5.0, 71) | |||
| Oil filter | Filter type | Full-flow filter type | |||
| Filtration area | cm2 (sq in) | Outer diameter 80 mm | 910 (141) | ||
| Outer diameter 68 mm | 800 (124) | ||||
| Outer diameter 65 mm | 470 (73) | ||||
| By-pass valve opening pressure | kPa (kg/cm2 , psi) | 157(1.60, 22.8) | |||
| Outer diameter x width | mm (in) | Outer diameter 80 mm | 80 x 75 (3.15 x 2.95) | ||
| Outer diameter 68 mm | 68 x 65 (2.68 x 2.56) | ||||
| Outer diameter 65 mm | 65 x 74.4 (2.56 x 2.93) | ||||
| Installation screw specifications | M 20 x 1.5 | ||||
| Oil pressure switch | Type | Immersed contact point type | |||
| Working voltage - wattage | 12 V - 3.4 W or less | ||||
| Warning light activation pressure | kPa (kg/cm2 , psi) | 14.7 (0.15, 2.1) | |||
| Proof pressure | kPa (kg/cm2 , psi) | 981 (10, 142) or more | |||
| Oil capacity (at replacement) | (US qt, Imp qt) | 4.0 (4.2, 3.5) | |||
Recommended oil:
API standard SL with the "Energy Conserving" logo is printed (if you cannot obtain the oil with SL grade, you may use SJ grade "ENERGY CONSERVING" oil.)
ILSAC standard, GF-3 or New API certification mark (Star burst mark) label is on the container
The proper viscosity helps vehicle get good cold and hot starting by reducing viscous friction and thus increasing cranking speed.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.