Nissan Versa
 Sedan Service Manual
Engine » Engine lubrication system (LU)
Oil cooler

Exploded View


1. Radiator hose (upper) 2. Hose clamp 3. Radiator hose (lower) 4. Hose clamp 5. Water hose 6. Oil cooler 7. Connector bolt 8. Water hose 9. Oring A. To radiator (upper side) B. To radiator (lower side) 10. Relief valve

Removal and Installation



When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.

  1. Remove the engine under cover.
  2. Drain engine oil.
  3. Drain engine coolant. CAUTION: Perform when engine is cold.
  4. Remove oil filter.
  5. Remove water hoses from the oil cooler.
  6. Remove oil cooler and Oring.

    CAUTION: Do not reuse Orings.


Oil Cooler Check oil cooler for cracks. Check oil cooler for clogging by blowing compressed air through engine coolant inlet. If necessary, replace oil cooler assembly.

Relief Valve Inspect relief valve for movement, cracks and breaks by pushing the ball. If replacement is necessary, remove the valve by prying it out using a suitable tool. Install a new valve by tapping it in place.


Installation is in the reverse order of removal.

  • Ensure that no foreign objects are adhering to the sealing surfaces of the oil cooler and oil pan (upper).
  • Tighten connector bolt after aligning cutout (1) on oil cooler with protrusion (2) on oil pan (upper) side.


  • Do not reuse Oring.
  • Replace relief valve if removed.



  • Before starting engine, check oil/fluid levels, including engine coolant and engine oil. If less than required quantity, fill to the specified level.
  • Use procedure below to check for fuel leakage.
  • Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leakage at connection points.
  • Start engine. With engine speed increased, check again for fuel leakage at connection points.
  • Run engine to check for unusual noise and vibration.


If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after hydraulic pressure rises.

  • Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids including engine oil and engine coolant.
  • Bleed air from passages in lines and hoses, such as in cooling system.
  • After cooling down engine, again check oil/fluid levels, including engine oil and engine coolant. Refill to specified level, if necessary.
  • Summary of the inspection items:
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Transmission/ transaxle fluid A/T and CVT Models Leakage Level/Leakage Leakage
M/T Models Level/Leakage Leakage Level/Leakage
Other oils and fluids* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gas Leakage

*Power steering fluid, brake fluid, etc.

    More about «Engine lubrication system (LU)»:



    Engine oil

    Oil filter

    Oil pump

    Oil cooler

    Service data and specifications (SDS)

    Nissan Versa Sedan Service Manual / Engine / Engine lubrication system (LU) / Oil cooler

    Nissan Versa Sedan Service Manual


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