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Timing Belt

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Timing Gear Components
GC0081684Courtesy of CHRYSLER LLC
1 - RIGHT CAMSHAFT GEAR ALIGNMENT MARK 7 - LEFT CAMSHAFT GEAR
2 - RIGHT CAMSHAFT GEAR 8 - LEFT CAMSHAFT GEAR ALIGNMENT MARK
3 - CYLINDER HEAD TO INNER TIMING BELT COVER BOLTS - RIGHT 9 - CRANKSHAFT GEAR ALIGNMENT MARK
4 - TIMING BELT 10 - CRANKSHAFT GEAR
5 - WATER PUMP PULLEY 11 - TIMING BELT TENSIONER PULLEY
6 - CYLINDER HEAD TO INNER TIMING BELT COVER BOLTS - LEFT 12 - TIMING BELT TENSIONER
CAUTION: The 3.5L is NOT a freewheeling engine. Therefore, the valve train rocker assemblies must be removed before attempting to rotate either crankshaft or camshafts independently of each other.
  1. Disconnect and isolate the negative battery cable.
  2. Remove the front timing belt cover. See Engine/Valve Timing/COVER(S), Engine Timing - Removal .
  3. Mark belt running direction, if timing belt is to be reused.
    CAUTION: When aligning timing marks, always rotate engine by turning the crankshaft. Failure to do so will result in valve and/or piston damage.
  4. Rotate engine clockwise until crankshaft (10) mark aligns with the TDC mark on oil pump housing (9) and the camshaft sprocket (2, 7) timing marks (1, 8) are aligned with the marks on the rear cover.
  5. Remove the timing belt tensioner (12).
  6. Remove the timing belt (4).
  7. Inspect the tensioner for fluid leakage.
  8. Inspect the pivot and bolt for free movement, bearing grease leakage, and smooth rotation. If not rotating freely, replace the arm and pulley assembly.
    Fig 2: Compressing Timing Belt Tensioner
    GC0095558Courtesy of CHRYSLER LLC
    1 - VISE
    2 - LOCKING PIN
  9. When tensioner is removed from the engine it is necessary to compress the plunger into the tensioner body.
    CAUTION: Index the tensioner in the vise the same way it is installed on the engine. This ensures proper pin orientation when tensioner is installed on the engine.
    1. Place the tensioner into a vise (1) and SLOWLY compress the plunger. Total bleed down of tensioner should take approximately two minutes.
    2. When plunger is compressed into the tensioner body install a pin (2) through the body and plunger to retain plunger in place until tensioner is installed.
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