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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 195 (Engine Mechanical) >> Oil Pan >> Removal

Oil Pan: Removal

WARNING: This page is about a different car, the 2002 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
  • Place vehicle on a flat and solid surface.
  • You should not remove oil pan until exhaust system and cooling system have completely cooled off.

    Otherwise, you may burn yourself and/or fire may break out in the fuel line.

  • When removing front engine mounting nuts, lift up slightly engine for safety work.
CAUTION: When removing the aluminum oil pan from engine, first remove the crankshaft position sensors (POS and REF) from the assembly.
Be careful not to damage sensor edges and signal plate teeth.
  1. Remove front RH and LH wheels.
  2. Remove battery.
  3. Remove oil level gauge.
  4. Remove engine undercover.
  5. Remove suspension member stay.
  6. Drain engine coolant from radiator drain plug.
  7. Disconnect A/T oil cooler hoses. (A/T)
  8. Drain engine oil.
  9. Remove the crankshaft position sensors (REF and POS).
  10. Remove drive belts and idler pulley with bracket.
  11. Remove power steering oil pump, then put it aside holding with a suitable wire.
  12. Remove alternator.
  13. Install engine slingers.
  14. Remove front propeller shaft. (4WD)

    Refer to "REMOVAL AND INSTALLATION ".

  15. Remove exhaust front tube heat insulators, then remove rear heat oxygen sensors.
  16. Remove exhaust front tube from both sides.

    Refer to "REMOVAL AND INSTALLATION ".

  17. Remove front final drive. (4WD)

    Refer to "REMOVAL AND INSTALLATION ".

  18. Remove starter motor.
  19. Disconnect oil pressure switch harness connector.
    Fig 1: Tightening Torque Engine Slinger
    G02010479Courtesy of NISSAN MOTOR CO., U.S.A.
  20. Loosen and disconnect the bolts fixing the steering column assembly lower joint and the power steering gear.
    Fig 2: Loosen And Disconnect Bolts Fixing Steering Column Assembly Lower Joint
    G02010480Courtesy of NISSAN MOTOR CO., U.S.A.
  21. Set a suitable transmission jack under the front suspension member and hoist engine with engine slingers.
    Fig 3: Placing Transmission Jack Under Front Suspension Member And Hoist Engine With Engine Slingers
    G02010481Courtesy of NISSAN MOTOR CO., U.S.A.
  22. Remove front engine mounting nuts from both sides.
    Fig 4: Locating Front Engine Mounting Nuts From Both Sides
    G02010482Courtesy of NISSAN MOTOR CO., U.S.A.
  23. Remove front suspension member bolts.
  24. Lower the transmission jack carefully to secure clearance between the oil pan and suspension member.
  25. Remove A/T oil cooler tube. (A/T)
  26. Remove water hose and tube. (A/T)
    Fig 5: Removing Front Suspension Member Bolts Right Side
    G02010483Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 6: Removing Front Suspension Member Bolts Left Side
    G02010484Courtesy of NISSAN MOTOR CO., U.S.A.
  27. Remove the four engine-to-transmission bolts.
    Fig 7: Locating Four Engine To-Transmission Bolts
    G02010485Courtesy of NISSAN MOTOR CO., U.S.A.
  28. Remove aluminum oil pan bolts in numerical order.
    Fig 8: Removing Aluminum Oil Pan Bolts In Numerical Order
    G02010486Courtesy of NISSAN MOTOR CO., U.S.A.
  29. Remove aluminum oil pan.
    1. Insert tool between aluminum oil pan and cylinder block.
      • Be careful not to damage aluminum mating surface. 
      • Do not insert screwdriver, or oil pan flange will be deformed. 
    2. Slide tool by tapping its side with a hammer.
      Fig 9: Sliding Tool By Tapping Its Side With Hammer
      G02010487Courtesy of NISSAN MOTOR CO., U.S.A.
  30. Remove O-rings from cylinder block and oil pump body.
    Fig 10: Never Use Old O-Ring Replace With New One
    G02010488Courtesy of NISSAN MOTOR CO., U.S.A.
  31. Remove front cover gasket and rear oil seal retainer gasket.
    Fig 11: Never Use Old Gasket Replace With New One
    G02010489Courtesy of NISSAN MOTOR CO., U.S.A.