Infinity_QX4_1998-2003

Timing Belt & Sprockets

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Removal & Installation



3.3L Engine
  1. Remove the engine undercover.
  2.  
  3. Remove the radiator shroud, the fan and the pulleys.
  4.  
  5. Drain the coolant from the radiator and remove the water pump hose.
    CAUTION
    When draining the coolant, keep in mind that cats and dogs are attracted by the ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.

  6.  
  7. Remove the radiator.
  8.  
  9. Remove the power steering, air conditioning compressor and alternator drive belts.
  10.  
  11. Remove the spark plugs.
  12.  
  13. Remove the distributor protector (dust shield).
  14.  
  15. Remove the air conditioning compressor drive belt idler pulley and bracket.
  16.  
  17. Remove the fresh air intake tube at the cylinder head cover.
  18.  
  19. Disconnect the radiator hose at the thermostat housing.
  20.  
  21. Remove the crankshaft pulley bolt, then pull off the pulley with a suitable puller.
  22.  
  23. Remove the bolts, then remove the front upper and lower timing belt covers.
  24.  
  25. Set the No. 1 piston at Top Dead Center (TDC) of its compression stroke. Align the punchmark on the left camshaft sprocket with the punchmark on the timing belt upper rear cover. Align the punchmark on the crankshaft sprocket with the notch on the oil pump housing. Temporarily install the crank pulley bolt so the crankshaft can be rotated if necessary.
  26.  
  27. Loosen the timing belt tensioner and return spring, then remove the timing belt.

    Click image to see an enlarged view

    Fig. Timing belt alignment mark locations-3.0L and 3.3L engines

  28.  

To install:


CAUTION
Before installing the timing belt, confirm that the No. 1 cylinder is set at the T