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Section 91 (3.7L Engine (Service Information)): Camshaft(S): Removal

WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: When the timing chain is removed and the cylinder heads are still installed, DO NOT forcefully rotate the camshafts or crankshaft independently of each other. Severe valve and/or piston damage can occur.
CAUTION: When removing the cam sprocket, timing chains or camshaft, Failure to use Special Tool 8379 will result in hydraulic tensioner ratchet over extension, requiring timing chain cover removal to reset the tensioner ratchet.
  1. Remove cylinder head cover (Refer to CYLINDER HEAD COVER  ).
  2. Set engine to TDC cylinder #1, camshaft sprocket V6 marks at the 12 o'clock position.
  3. Mark one link on the secondary timing chain on both sides of the V6 mark on the camshaft sprocket to aid in installation.
    CAUTION: Do not hold or pry on the camshaft target wheel (Located on the right side camshaft sprocket) for any reason, Severe damage will occur to the target wheel resulting in a vehicle no start condition.
  4. Loosen but DO NOT  remove the camshaft sprocket retaining bolt. Leave the bolt snug against the sprocket.
    NOTE: The timing chain tensioners must be secured prior to removing the camshaft sprockets. Failure to secure tensioners will allow the tensioners to extend, requiring timing chain cover removal in order to reset tensioners.
    CAUTION: Do not force wedge past the narrowest point between the chain strands. Damage to the tensioners may occur.
  5. Position Special Tool 8379 timing chain wedge between the timing chain strands, tap the tool to securely wedge the timing chain against the tensioner arm and guide (Fig 1 ).
    Fig 1: Securing Timing Chain Tensioners Using Timing Chain Wedge
    G03512094Courtesy of DAIMLERCHRYSLER CORP.
  6. Hold the camshaft with Special Tool 8428 Camshaft Wrench, while removing the camshaft sprocket bolt and sprocket (Fig 2 ).
    Fig 2: Identifying Special Tool 8428
    G03512095Courtesy of DAIMLERCHRYSLER CORP.
  7. Using Special Tool 8428 Camshaft Wrench, gently allow the camshaft to rotate 5° clockwise until the camshaft is in the neutral position (no valve load).
  8. Starting at the outside working inward, loosen the camshaft bearing cap retaining bolts 1/2 turn at a time. Repeat until all load is off the bearing caps.
    CAUTION: DO NOT STAMP OR STRIKE THE CAMSHAFT BEARING CAPS. SEVERE DAMAGE WILL OCCUR TO THE BEARING CAPS.
    NOTE: When the camshaft is removed the rocker arms may slide downward, mark the rocker arms before removing camshaft.
  9. Remove the camshaft bearing caps and the camshaft.


CAUTION: When the timing chain is removed and the cylinder heads are still installed, DO NOT forcefully rotate the camshafts or crankshaft independently of each other. Severe valve and/or piston damage can occur.
CAUTION: When removing the cam sprocket, timing chains or camshaft, Failure to use special tool 8379 will result in hydraulic tensioner ratchet over extension, Requiring timing chain cover removal to re-set the tensioner ratchet.
  1. Remove the cylinder head cover (Refer to CYLINDER HEAD COVER  ).
  2. Set engine to TDC cylinder No. 1, camshaft sprocket V6 marks at the 12 o'clock position.
  3. Mark one link on the secondary timing chain on both sides of the V6 mark on the camshaft sprocket to aid in installation.
    CAUTION: Do not hold or pry on the camshaft target wheel for any reason, Severe damage will occur to the target wheel. A damaged target wheel could cause a vehicle no start condition.
  4. Loosen but DO NOT  remove the camshaft sprocket retaining bolt. Leave bolt snug against sprocket.
    NOTE: The timing chain tensioners must be secured prior to removing the camshaft sprockets. Failure to secure tensioners will allow the tensioners to extend, requiring timing chain cover removal in order to reset tensioners.
    CAUTION: Do not force wedge past the narrowest point between the chain strands. Damage to the tensioners may occur.
  5. Position Special Tool 8379 timing chain wedge between the timing chain strands. Tap the tool to securely wedge the timing chain against the tensioner arm and guide.
  6. Remove the camshaft position sensor.
  7. Hold the camshaft with Special Tool 8428 Camshaft Wrench, while removing the camshaft sprocket bolt and sprocket.
  8. Starting at the outside working inward, loosen the camshaft bearing cap retaining bolts 1/2 turn at a time. Repeat until all load is off the bearing caps.
    CAUTION: DO NOT STAMP OR STRIKE THE CAMSHAFT BEARING CAPS. SEVERE DAMAGE WILL OCCUR TO THE BEARING CAPS.
    NOTE: When the camshaft is removed the rocker arms may slide downward, mark the rocker arms before removing camshaft.
  9. Remove the camshaft bearing caps and the camshaft.
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