Nissan Frontier, Xterra 1998-05

Timing Chain Cover, Chain, Sprockets, & Seal

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Removal & Installation



2.4L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Drain the cooling system.
  4.  
  5. Drain the engine oil.
  6.  
  7. Set the engine to Top Dead Center (TDC) of the compression stroke for the No. 1 cylinder.
  8.  
  9. Remove or disconnect the following:

    Negative battery cable
     
    Air cleaner assembly
     
    Spark plug wires
     
    Cooling fan and shroud
     
    Distributor
     
    Valve cover
     
    Accessory drive belts
     
    Power steering pump and brackets
     
    A/C compressor and bracket
     
    Idler pulleys
     
    Water pump pulley
     
    Crankshaft pulley
     
    Front crankshaft seal
     
    Oil pump and drive spindle
     
    Oil pan
     
    Upper timing cover
     
    Lower timing cover
     
    Upper timing chain tensioner
     
    Upper timing chain and camshaft sprockets. Matchmark the timing chain to the sprockets.
     
    Lower timing chain tensioner
     
    Lower timing chain and idler sprocket. Matchmark the timing chain to the sprockets.
     

  10.  

To install:

Click image to see an enlarged view

Fig. Lower timing chain alignment-2.4L engine



Click image to see an enlarged view

Fig. Upper timing chain alignment-2.4L engine

  1. Install or connect the following:

    Lower timing chain and idler sprocket with the timing marks aligned as shown. Tighten the idler sprocket bolt to 48-61 ft. lbs. (66-83 Nm).
     
    Lower timing chain tensioner. Tighten the bolts to 56-66 inch lbs. (6.5-7.5 Nm).
     
    Upper timing chain and camshaft sprockets with the timing marks aligned as shown. Tighten the camshaft sprocket bolts to 123-130 ft. lbs. (167-177 Nm).
     
    Upper timing chain tensioner. Tighten the bolts to 56-66 inch lbs. (6.5-7.5 Nm).
     
    Lower timing cover. Tighten the large bolts to 12-14 ft. lbs. (16-19 Nm) and the small bolts to 56-66 inch lbs. (6.5-7.5 Nm).
     
    Upper timing cover. Tighten the large bolts to 12-14 ft. lbs. (16-19 Nm) and the small bolts to 56-66 inch lbs. (6.5-7.5 Nm).
     
    Oil pan
     
    Oil pump and drive spindle
     
    Front crankshaft seal
     
    Crankshaft pulley. Tighten the bolt to 105-112 ft. lbs. (142-152 Nm).
     
    Water pump pulley
     
    Idler pulleys
     
    A/C compressor and bracket
     
    Power steering pump and brackets
     
    Accessory drive belts
     
    Valve cover
     
    Distributor
     
    Cooling fan and shroud
     
    Spark plug wires
     
    Air cleaner assembly
     
    Negative battery cable
     

  2.  
  3. Fill the cooling system.
  4.  
  5. Fill the crankcase to the correct level.
  6.  
  7. Start the engine and check for leaks.
  8.  
  9. Check the ignition timing and adjust, as necessary.
  10.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Drain the cooling system.
  4.  
  5. Drain the engine oil.
  6.  
  7. Set the engine to Top Dead Center (TDC) of the compression stroke for the No. 1 cylinder.
  8.  
  9. Remove or disconnect the following:

    Negative battery cable
     
    Air cleaner assembly
     
    Spark plug wires
     
    Cooling fan and shroud
     
    Distributor
     
    Valve cover
     
    Accessory drive belts
     
    Power steering pump and brackets
     
    A/C compressor and bracket
     
    Idler pulleys
     
    Water pump pulley
     
    Crankshaft pulley
     
    Front crankshaft seal
     
    Oil pump and drive spindle
     
    Oil pan
     
    Upper timing cover
     
    Lower timing cover
     
    Upper timing chain tensioner
     
    Upper timing chain and camshaft sprockets. Matchmark the timing chain to the sprockets.
     
    Lower timing chain tensioner
     
    Lower timing chain and idler sprocket. Matchmark the timing chain to the sprockets.
     

  10.  

To install:

Click image to see an enlarged view

Fig. Lower timing chain alignment-2.4L engine



Click image to see an enlarged view

Fig. Upper timing chain alignment-2.4L engine

  1. Install or connect the following:

    Lower timing chain and idler sprocket with the timing marks aligned as shown. Tighten the idler sprocket bolt to 48-61 ft. lbs. (66-83 Nm).
     
    Lower timing chain tensioner. Tighten the bolts to 56-66 inch lbs. (6.5-7.5 Nm).
     
    Upper timing chain and camshaft sprockets with the timing marks aligned as shown. Tighten the camshaft sprocket bolts to 123-130 ft. lbs. (167-177 Nm).
     
    Upper timing chain tensioner. Tighten the bolts to 56-66 inch lbs. (6.5-7.5 Nm).
     
    Lower timing cover. Tighten the large bolts to 12-14 ft. lbs. (16-19 Nm) and the small bolts to 56-66 inch lbs. (6.5-7.5 Nm).
     
    Upper timing cover. Tighten the large bolts to 12-14 ft. lbs. (16-19 Nm) and the small bolts to 56-66 inch lbs. (6.5-7.5 Nm).
     
    Oil pan
     
    Oil pump and drive spindle
     
    Front crankshaft seal
     
    Crankshaft pulley. Tighten the bolt to 105-112 ft. lbs. (142-152 Nm).
     
    Water pump pulley
     
    Idler pulleys
     
    A/C compressor and bracket
     
    Power steering pump and brackets
     
    Accessory drive belts
     
    Valve cover
     
    Distributor
     
    Cooling fan and shroud
     
    Spark plug wires
     
    Air cleaner assembly
     
    Negative battery cable
     

  2.  
  3. Fill the cooling system.
  4.  
  5. Fill the crankcase to the correct level.
  6.  
  7. Start the engine and check for leaks.
  8.  
  9. Check the ignition timing and adjust, as necessary.
  10.  

 
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