Removal & Installation
- Before servicing the vehicle, refer to the Precautions Section.
- Properly relieve the fuel system pressure.
- Disconnect the negative battery cable.
- Drain the engine cooling system and the engine oil.
Remove or disconnect the following:
- Rotate the crankshaft clockwise until the no. 1 cylinder is at TDC on the compression stroke. The word DELPHI on the camshaft position actuator will be parallel with the cylinder head surface.
Install camshaft locking tool J-44221 to the rear of the camshafts.
- Remove the camshaft sprocket bolts and discard them.
Install tension tool J-44222 on the cylinder head and install the holding bolts in the camshaft sprocket bolt holes to lock the timing chain and sprockets in position.
- Carefully slide the sprockets and timing chain onto the tension tool.
- Remove the camshaft bearing caps.
- Remove the Camshaft Locking Tool from the camshafts.
- Remove the camshafts.
- Inspect the camshaft, journals and lobes for wear and replace, if necessary.
- If removed, use the camshaft bearing tool to install a new set of bearings.
- Coat the camshaft lobes, journals and thrust face with clean engine oil.
- Install camshaft locking tool J-44221 to the rear of the camshafts.
- Install the camshafts with the flats up and with cylinder no. 1 at TDC.
- Install the bearing caps in their original position and tighten the bolts to 106 inch lbs. (12 Nm).
- Carefully slide the sprockets and timing chain onto the camshafts, ensuring the alignment pins are engaged between the camshafts and sprockets.
- Install new camshaft sprocket bolts and washers. Tighten the intake sprocket bolt to 15 ft. lbs. (20 Nm), plus it additional 100°. Tighten the exhaust sprocket bolt to 18 ft. lbs. (25 Nm), plus an additional 135°.
- Remove the camshaft locking plate tool.
Install or connect the following:
Both Camshaft Position (CMP) sensors
- Refill the engine cooling system and engine oil.