Lubrication System On-Vehicle Inspection


  1. INSPECT ENGINE OIL QUALITY

  2. INSPECT ENGINE OIL LEVEL

  3. INSPECT ENGINE OIL PRESSURE

Lubrication System -- On-Vehicle Inspection



1. INSPECT ENGINE OIL QUALITY

  1. Check the engine oil for deterioration, water contamination, discoloration or thinning. If the quality is visibly poor, replace the engine oil and oil filter sub-assembly.



2. INSPECT ENGINE OIL LEVEL

  1. Warm up the engine, and then stop the engine and wait 5 minutes.

  1. Check that the engine oil level is between the engine oil level dipstick low level mark and full level mark.
    If the engine oil level is low, check for leaks and add engine oil to the full level mark.

    NOTICE:
    Do not fill engine oil above the full level mark.
    HINT:
    A certain amount of engine oil will be consumed while driving. In the following situations, oil consumption may increase, and engine oil may need to be refilled in between oil maintenance intervals.
    1. When the engine is new, for example directly after purchasing the vehicle or after replacing the engine.
    1. If low quality oil or oil of an inappropriate viscosity is used.
    1. When driving at a high engine speed or with a heavy load, when towing, or when driving while accelerating or decelerating frequently.
    1. When idling for a long time, or when driving frequently through heavy traffic.
    When judging the amount of oil consumption, keep in mind that the oil may have become diluted, making it difficult to judge the true level accurately.


3. INSPECT ENGINE OIL PRESSURE

  1. Remove the engine oil pressure switch assembly (LandCruiser RM000005UCG000X.html).



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  1. Install an oil pressure gauge with the adapter.

    Text in Illustration
    *a
    		Oil Pressure Gauge
    *b
    		Adapter
    NOTICE:
    Before and after measurement, clean equipment and hoses.

  1. Warm up the engine.

  1. Measure the engine oil pressure, and check that it is within the standard range.

    Standard Engine Oil Pressure:
    Condition
    		Specified Condition
    Idle
    		29 kPa (0.3 kgf/cm2, 4.2 psi) or higher
    3000 rpm
    		245 kPa (2.5 kgf/cm2, 36 psi) or higher
    If the result is not as specified, check the quality of the engine oil and check the oil paths for clogging. Repair or replace if necessary. If the engine oil pressure is still not as specified, replace the timing chain case assembly.
    HINT:
    Replace the timing chain case assembly as the engine oil pump is built into the timing chain case assembly.

  1. Remove the oil pressure gauge and adapter.

  1. Install the engine oil pressure switch assembly (LandCruiser RM000005UCD000X.html).