Nissan Car 350Z & Maxima 1999-06

Timing Chain Cover, Chain, Sprockets, & Seal 3

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Removal & Installation



3.5L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the engine oil.
  4.  
  5. Drain the cooling system.
  6.  
  7. Relieve the fuel system pressure.
  8.  
  9. Remove or disconnect the following:
    NOTE
    Before detaching any hoses or connectors, note the locations for reassembly.



    Negative battery cable
     
    Left side rocker cover ornament
     



    Air duct to intake manifold hose, collector hose, blow-by hose and vacuum hoses
     
    Fuel hoses and detach the harness connections
     
    Canister purge hoses
     
    Water hoses from the cylinder head and intake manifold
     
    All 6 ignition coils from the spark plugs
     
    Spark plugs
     
    Bolts that secure the Exhaust Gas Recirculation (EGR) tube and remove the tube
     
    Intake manifold collector supports and the collector
     
    Fuel tube assembly
     
    Intake manifold. Loosen the bolts in the reverse sequence of the tightening procedure.
     
    Left-hand and right-hand intake valve timing control solenoid valves
     
    Left-hand and right-hand rocker covers from the cylinder head
     
    Engine undercovers
     
    Right front wheel and the engine side covers
     
    Drive belts and the idler pulley
     
    Power steering oil pump belt and the power steering oil pump assembly
     
    Camshaft Position (CMP) sensor (PHASE) and Crankshaft Position (CKP) sensors (REF)/(POS)
     

  10.  
  11. Set the No. 1 piston to Top Dead Center (TDC) of compression stroke by rotating the crankshaft.

    Click image to see an enlarged view

    Fig. Set the No. 1 piston to Top Dead Center (TDC)-3.5L engine

  12.  
  13. Loosen the crankshaft pulley bolt while securing the ring gear so the crankshaft cannot rotate.
    NOTE
    Use care not to damage the ring gear teeth.



    Ring gear cover access plate
     



    Crankshaft pulley using a suitable puller
     
    Intake valve timing control valve cover. Loosen the bolts in the reverse order shown in the accompanying figure. In the cover, the shaft is engaged with the center hole of the intake camshaft sprocket. Remove it straight out until the engagement comes off.

    Click image to see an enlarged view

    Fig. Loosen the intake valve timing control valve cover bolts in the reverse of the order shown-3.5L engine

     
    A/C compressor and bracket
     
    Front exhaust pipe and its support
     

  14.  
  15. Hang the engine at the right and left side engine slingers with a suitable hoist.
  16.  
  17. Support the transaxle with jack.

    Right side engine mounting and bracket
     
    Center crossmember assembly
     
    Upper and lower oil pans
     
    Water pump cover
     
    Bolts that secure the front timing chain case, in sequence

    Click image to see an enlarged view

    Fig. Remove the front timing chain case mounting bolts in the reverse of the sequence shown-3.5L engines

     
    Timing chain case cover using a seal cutter
     
    Internal timing chain guide and the upper chain guide
     
    Timing chain tensioner and slack side chain guide
     
    Left and right intake camshaft sprockets first. Be sure to hold the flats of the camshafts while removing the sprocket bolts.
     
    Lower timing chain assembly. Be sure to note the aligning marks of the chain before removal.
     

  18.  
  19. Insert a suitable stopper pin for the left and right camshaft tensioners.

    Left and right exhaust camshaft sprocket bolts. Be sure to hold the flats of the camshafts while removing the sprocket bolts.
     
    Upper timing chain assembly. Be sure to note the aligning marks of the chain before removal.
     
    Lower timing chain guide
     
    Crankshaft sprocket
     
    All traces of liquid gasket from the front timing chain case and from the water pump
     

  20.  
  21. Inspect the timing chain for excessive wear or damage and replace as necessary.

    Click image to see an enlarged view

    Fig. Hold the camshaft with a wrench while removing the sprocket bolts-3.5L engine



    Click image to see an enlarged view

    Fig. Timing chain alignment marks-3.5L engine

  22.  

To install:

  1. Install or connect the following:

    Crankshaft sprocket with the mating mark facing out
     

  2.  
  3. Position the crankshaft to TDC of compression stroke and align the dowels of the camshaft sprockets to the 12 o'clock position in respect to the cylinder head.

    Lower timing chain guide. The front mark on the guide should face upwards.
     

  4.  
  5. On a work bench, align the marks on the intake and exhaust camshaft sprockets with the marks of the chain.

    Exhaust camshaft sprockets onto the dowel pin and torque the mounting bolts to 88-95 ft. lbs. (119-128 Nm). Be sure to secure the camshafts while tightening the bolts.
     
    Timing chains and sprockets to the intake camshafts. Be sure to align the timing chain and sprocket mating marks.
     
    Left and right camshaft tensioner stopper pins
     

  6.  
  7. Align the mating mark on the crankshaft with the matchmark (gold link) on the lower timing chain.

    Click image to see an enlarged view

    Fig. Application of liquid gasket to the front timing case-3.5L engine



    Click image to see an enlarged view

    Fig. Tighten the front timing chain case bolts according to the sequence shown-3.5L engines

  8.  
  9. Install the lower timing chain to the water pump sprocket.
  10.  
  11. Working counterclockwise, install the lower timing chain camshaft sprockets. Be sure to align the sprocket marks with the blue links of the timing chain during installation.
  12.  
  13. Install or connect the following:

    Intake sprocket and torque the bolts to 88-95 ft. lbs. (119-128 Nm). Be sure to secure the camshafts while tightening the bolts.
     
    Internal timing chain guide, upper timing chain guide, lower timing chain tensioner and slack side timing chain guide.
     

  14.  
  15. Torque the tensioner mounting bolt to 75-96 inch lbs. (8.4-10.8 Nm) and the guide bolts to 108-168 inch lbs. (13-19 Nm).
  16.  
  17. Apply a 0.102-0.142 in. (2.6-3.6mm) continuous bead of liquid gasket to all necessary areas as shown on the front timing cover.

    Timing cover evenly and gently. Be sure to align the dowel pin holes.
     

  18.  
  19. Torque the mounting bolts in sequence as follows:
    1. Bolts No. 1 and 2: 19-23 ft. lbs. (26-31 Nm).
    2.  
    3. Bolts No. 3-20: 105-121 inch lbs. (11.8-13.7 Nm).
      NOTE
      Leave the bolts unattended for 30 minutes or more after tightening. This will allow the liquid gasket to cure sufficiently.

    4.  

  20.  
  21. Apply a 0.091-0.130 in. (2.3-3.3mm) continuous bead of liquid gasket to the water pump cover and install the cover. Torque the bolts to 84-108 inch lbs. (10-13 Nm).
  22.  
  23. Install or connect the following:

    Oil pans
     
    Center crossmember
     
    Right side engine mount and bracket
     
    Front exhaust pipe and remove the transaxle support
     
    A/C compressor and bracket
     
    Crankshaft pulley
     
    Ring gear access cover plate
     
    CMP sensor and CKP sensors
     
    Power steering pump
     
    Idler pulley and drive belts
     
    Engine side cover and right front wheel
     
    Engine under covers
     
    Intake valve timing control solenoid valves with new covers. Tighten the cover bolts in the proper sequence.

    Click image to see an enlarged view

    Fig. Tighten the intake valve timing control valve cover bolts in sequence-3.5L engine

     
    Rocker covers
     
    Intake manifold
     
    Fuel tube assembly
     
    Intake manifold collector and support
     
    EGR tube
     
    Spark plugs and ignition coils
     
    Coolant hoses
     
    Fuel hoses
     
    Air duct assembly and hoses
     
    Left side rocker cover ornament
     
    Negative battery cable
     

  24.  
  25. Fill the cooling system.
  26.  
  27. Fill the engine with clean oil.
  28.  
  29. Start the vehicle, check for leaks and repair if necessary.
  30.  

 
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