Toyota Tundra 2001-06

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 0.160 mm (0.0024 to 0.0063 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



3.4L Engine


Click image to see an enlarged view

Fig. Oil pump bolt identification-3.4L engine

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable
     
    Engine undercover
     
    Crankshaft timing pulley
     
    Front differential, if equipped with 4WD
     

  4.  
  5. Drain the engine oil from the engine.
  6.  
  7. Remove or disconnect the following:

    Timing belt and crankshaft gear
     
    Oil cooler tube and clamp, if equipped with automatic transmission
     
    Stiffener plate
     
    Flywheel housing undercover and dust cover
     
    Rear end cover and dust cover
     
    Starter wire clamp
     
    Crankshaft Position (CKP) sensor
     
    Oil pan
     

  8.  


NOTE
Be careful not to damage the baffle plate flange.



Oil strainer
 
Oil baffle plate
 
Oil pump body by removing the 8 bolts.
 
O-ring from the cylinder block
 

To install:

  1. Install or connect the following:

    Apply Seal Packing PN 08826-00080 to the oil pump
     
    New O-ring into the groove of the cylinder block
     
    Oil pump to the crankshaft with the spline teeth of the drive rotor engaged with the large teeth of the crankshaft. Tighten the oil pump bolts -A- 15 ft. lbs. (20 Nm) and bolts -B- 31 ft. lbs. (42 Nm)
     
    CKP
     
    Oil pan baffle plate
     
    Oil strainer with a new gasket. Tighten the bolts to 13 ft. lbs. (18 Nm).
     
    Remaining components
     
    Negative battery cable
     

  2.  
  3. Fill with engine oil.
  4.  
  5. Start the engine and check for leaks.
  6.  



Click image to see an enlarged view

Fig. Oil pump bolt identification-3.4L engine

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable
     
    Engine undercover
     
    Crankshaft timing pulley
     
    Front differential, if equipped with 4WD
     

  4.  
  5. Drain the engine oil from the engine.
  6.  
  7. Remove or disconnect the following:
    NOTE
    Be careful not to damage the baffle plate flange.



    Timing belt and crankshaft gear
     
    Oil cooler tube and clamp, if equipped with automatic transmission
     
    Stiffener plate
     
    Flywheel housing undercover and dust cover
     
    Rear end cover and dust cover
     
    Starter wire clamp
     
    Crankshaft Position (CKP) sensor
     
    Oil pan
     



    Oil strainer
     
    Oil baffle plate
     
    Oil pump body by removing the 8 bolts.
     
    O-ring from the cylinder block
     

  8.  

To install:

  1. Install or connect the following:

    Apply Seal Packing PN 08826-00080 to the oil pump
     
    New O-ring into the groove of the cylinder block
     
    Oil pump to the crankshaft with the spline teeth of the drive rotor engaged with the large teeth of the crankshaft. Tighten the oil pump bolts -A- 15 ft. lbs. (20 Nm) and bolts -B- 31 ft. lbs. (42 Nm)
     
    CKP
     
    Oil pan baffle plate
     
    Oil strainer with a new gasket. Tighten the bolts to 13 ft. lbs. (18 Nm).
     
    Remaining components
     
    Negative battery cable
     

  2.  
  3. Fill with engine oil.
  4.  
  5. Start the engine and check for leaks.
  6.  

4.0L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Properly relieve the fuel system pressure.
  4.  
  5. Disconnect the negative battery cable. Disconnect the positive battery cable. Remove the battery.
  6.  
  7. Drain the engine coolant. Remove the radiator.
  8.  
  9. Remove the air cleaner assembly.
  10.  
  11. Separate the vane pump assembly. Remove the alternator. Remove the air conditioning compressor and position it to the side.
  12.  
  13. Remove the belt tensioner assembly. Remove the idler pulley number two subassembly. Remove the idler pulley number one subassembly. Remove the crankshaft pulley.
  14.  
  15. Remove the lower oil pan. Remove the oil strainer and pickup tube assembly. Remove the upper oil pan.
  16.  
  17. Remove the intake manifold. Remove the cylinder head cover assembly.
  18.  
  19. Remove the camshaft timing oil control valve assembly. Remove the VVT sensor. Remove the oil filter bracket subassembly.
  20.  
  21. Remove the timing chain case cover retaining bolts. Remove the cover from the engine. Remove the O-ring from the left cylinder head.
    NOTE
    Carefully remove the cover by prying between the cover and the cylinder head or block with a suitable tool. Be sure to cover the tip of the suitable tool prior to usage. Be careful not to damage the contact surfaces of the cylinder block, cylinder head and timing chain cover.


    NOTE
    The oil pump gears are located inside the timing case cover.



    Click image to see an enlarged view

    Fig. Timing chain case cover removal points-4.0L engine

  22.  
  23. Remove the three bolts and remove the oil pipe. Remove the two O-rings. Remove the seven oil pump cover bolts. Remove the gears from the timing chain case cover. Remove the oil pump relief valve.
  24.  

To install:

  1. Coat the oil pump relief valve with clean engine oil. Install the plug, using a new gasket and tighten to 36 ft. lbs.
  2.  
  3. Coat the oil pump gears with clean engine oil. Position the gears in the timing chain case cover with the identification marks facing oil pump cover side. Install the cover. Alternately tighten the bolts to 80 inch lbs. Install the oil pipe, tighten the bolts to 80 inch lbs.
  4.  
  5. Install a new front case oil seal. Install a new O-ring onto the left cylinder head.
  6.  
  7. Apply continuous beads (0.12-0.16 inch in diameter) of seal packing, part number 08826-00080 or equivalent to the four locations shown in the illustration.

    Click image to see an enlarged view

    Fig. Timing chain case cover seal packing locating points-4.0L engine



    Click image to see an enlarged view

    Fig. Timing chain case cover sealant application-4.0L engine

  8.  
  9. Apply continuous beads (0.12-0.16 inch in diameter) of seal packing, part number 08826-00080 or equivalent to all parts except the water pump part: for the water pump part use, part number 08826-00080 or equivalent, to the timing chain cover. Do not apply seal packing to portion -A- in the illustration.
    NOTE
    Remove any oil from the contact surfaces. Install the timing chain case cover within three minutes and tighten the bolts within fifteen minutes of applying the seal packing.

  10.  
  11. Align the key way of the oil pump drive motor with the rectangular portion of the crankshaft timing gear and slide the timing chain case cover into place. Oil pump drive rotor spline alignment-4.0L engine

    Click image to see an enlarged view

    Fig.



    Click image to see an enlarged view

    Fig. Timing chain case cover bolt location and torque sequence-4.0L engine

  12.  
  13. Install the timing chain case cover bolts. Tighten the bolts and nuts uniformly in several steps to 17 ft. lbs.
    NOTE
    Do not wrap the chain and slipper over the timing chain case cover seal line.

  14.  
  15. Continue the installation in the reverse order of the removal procedure.
  16.  
  17. When installing the cylinder head cover apply a continuous bead (0.08-0.12 inch) of seal packing, part number 08826-00080 or equivalent, to the cylinder head. Install the seal washers onto the bolts. Install the cylinder head cover bolts and nuts. Tighten bolts -A- to 7.4 ft. lbs. Tighten bolts -B- to 80 inch lbs. Tighten nuts to 80 inch lbs.
    NOTE
    Be sure to remove any oil from the contact surfaces of the cylinder head cover and the cylinder head. Install the cover within three minutes after applying the seal packing. Tighten the bolts to specification within fifteen minutes after installing the cover. Do not add engine oil for at least two hours after installing the cover.

  18.  
  19. Be sure to fill the engine with the proper grade and type engine coolant.
  20.  
  21. Be sure to fill the engine with the proper grade and type engine oil.
  22.  
  23. Start the engine and check for leaks, correct as required.
  24.  

4.7L Engine
  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. Refer to the Timing Belt unit repair section.
     
    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-4.7L engine



Click image to see an enlarged view

Fig. Oil pump bolt location-4.7L engine

  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-4.7L engine


  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-4.7L engine



Click image to see an enlarged view

Fig. Oil pump bolt location-4.7L engine

  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-4.7L engine

  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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