Lexus LX470 2002-06

Oil Pump

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Inspection



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the oil pump from the engine and disassemble it.
  4.  
  5. Coat the relief valve with engine oil and check that it falls smoothly into the valve hole by its own weight.
  6.  
  7. If it doesn-t, replace the relief valve. If necessary, replace the oil pump assembly.

    Click image to see an enlarged view

    Fig. Relief valve inspection

  8.  
  9. Place the drive and driven rotors into the oil pump body.
  10.  
  11. Using a feeler gauge, measure the clearance between the drive and driven rotor tips.
  12.  
  13. Standard tip clearance is 0.060 to 0.180 mm (0.0024 to 0.0071 in.).
  14.  
  15. If the tip clearance is greater than maximum, replace the rotors as a set.

    Click image to see an enlarged view

    Fig. Measuring rotor tip clearance

  16.  
  17. Using a feeler gauge and precision straight edge, measure the clearance between the rotors and precision straight edge.
  18.  
  19. Standard side clearance is 0.030 to 0.090 mm (0.0012 to 0.0035 in.).
  20.  
  21. If the side clearance is greater than maximum, replace the rotors as a set. If necessary, replace the oil pump assembly.

    Click image to see an enlarged view

    Fig. Measuring side clearance

  22.  
  23. Using a feeler gauge, measure the clearance between the driven rotor and body.
  24.  
  25. Standard body clearance is 0.250 to 0.325 mm (0.0098 to 0.0128 in.).
  26.  
  27. If the body clearance is greater than maximum, replace the rotors as a set. If necessary, replace the oil pump assembly.

    Click image to see an enlarged view

    Fig. Measuring body clearance

  28.  

Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the engine from the vehicle and mount it on a stand.
  4.  
  5. Remove or disconnect the following:

    Front cover
     
    Timing belt.
     
    Timing belt idler pulleys
     
    Crankshaft timing sprocket
     
    Oil dipstick tube
     
    Oil filter and bracket
     
    Crankshaft Position (CKP) sensor
     
    Oil pan and baffle
     
    Oil pump pickup tube
     
    Oil pump
     

  6.  

To install:



Click image to see an enlarged view

Fig. Location of the O-ring seal



Click image to see an enlarged view

Fig. Oil pump bolt location

  1. The upper oil pan bolts are different lengths and are identified as follows:

    A: 1.38 inch (35mm) w/12mm head
     
    B: 1.97 inch (50mm) w/12mm head
     
    C: 4.17 inch (106mm) w/12mm head
     
    D: 1.57 inch (40mm) w/14mm head
     
    E: 1.18 inch (30mm) w/6mm hex head
     

  2.  
  3. Install a new O-ring on the engine block.
  4.  
  5. Apply silicone sealant to the oil pump housing as shown.
  6.  
  7. Install the oil pump. Tighten the bolts in several passes to the following specifications:

    12mm: 11 ft. lbs. (15.5 Nm)
     
    14mm: 22 ft. lbs. (30.5 Nm)
     
    6mm Hex: 11 ft. lbs. (15.5 Nm)
     

  8.  
  9. Install or connect the following:

    Oil pump pickup tube. Tighten the bolts to 66 inch lbs. (7.5 Nm).
     
    Oil pan and baffle
     
    CKP sensor
     
    Oil filter and bracket. Tighten the bolts to 13 ft. lbs. (18 Nm).
     
    Oil dipstick tube
     
    Crankshaft timing sprocket
     
    Timing belt idler pulleys
     
    Timing belt
     
    Front cover
     

  10.  
  11. Install the engine.
  12.  


    Click image to see an enlarged view

    Fig. Oil pump housing sealant application


  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Remove the engine from the vehicle and mount it on a stand.
  4.  
  5. Remove or disconnect the following:

    Front cover
     
    Timing belt.
     
    Timing belt idler pulleys
     
    Crankshaft timing sprocket
     
    Oil dipstick tube
     
    Oil filter and bracket
     
    Crankshaft Position (CKP) sensor
     
    Oil pan and baffle
     
    Oil pump pickup tube
     
    Oil pump
     

  6.  

To install:

Click image to see an enlarged view

Fig. Location of the O-ring seal



Click image to see an enlarged view

Fig. Oil pump bolt location

  1. The upper oil pan bolts are different lengths and are identified as follows:

    A: 1.38 inch (35mm) w/12mm head
     
    B: 1.97 inch (50mm) w/12mm head
     
    C: 4.17 inch (106mm) w/12mm head
     
    D: 1.57 inch (40mm) w/14mm head
     
    E: 1.18 inch (30mm) w/6mm hex head
     

  2.  
  3. Install a new O-ring on the engine block.
  4.  
  5. Apply silicone sealant to the oil pump housing as shown.

    Click image to see an enlarged view

    Fig. Oil pump housing sealant application

  6.  
  7. Install the oil pump. Tighten the bolts in several passes to the following specifications:

    12mm: 11 ft. lbs. (15.5 Nm)
     
    14mm: 22 ft. lbs. (30.5 Nm)
     
    6mm Hex: 11 ft. lbs. (15.5 Nm)
     

  8.  
  9. Install or connect the following:

    Oil pump pickup tube. Tighten the bolts to 66 inch lbs. (7.5 Nm).
     
    Oil pan and baffle
     
    CKP sensor
     
    Oil filter and bracket. Tighten the bolts to 13 ft. lbs. (18 Nm).
     
    Oil dipstick tube
     
    Crankshaft timing sprocket
     
    Timing belt idler pulleys
     
    Timing belt
     
    Front cover
     

  10.  
  11. Install the engine.
  12.  

 
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