Grand Cherokee 2WD V8-4.7L VIN J (2004)
Lifter / Lash Adjuster: Service and Repair
CYLINDER HEAD RIGHT
REMOVAL
1. Disconnect battery negative cable.
2. Raise the vehicle on a hoist.
3. Disconnect the exhaust pipe at the right side exhaust manifold.
4. Drain the engine coolant.
5. Lower the vehicle.
6. Remove the intake manifold.
7. Remove the cylinder head cover.
8. Remove oil fill housing from cylinder head.
9. Remove accessory drive belt.
10. Rotate the crankshaft until the damper timing mark is aligned with TDC indicator mark (Fig. 9)
11. Verify the V8 mark on the camshaft sprocket is at the 12 o'clock position (Fig. 11). Rotate the crankshaft one turn if necessary.
12. Remove the crankshaft damper.
13. Remove the timing chain cover.
14. Lock the secondary timing chains to the idler sprocket using Special Tool 8515 (Fig. 10).
NOTE: Mark the secondary timing chain prior to removal to aid in installation.
15. Mark the secondary timing chain, one link on each side of the V8 mark on the camshaft drive gear (Fig. 11).
16. Remove the right side secondary chain tensioner.
17. Remove the cylinder head access plug (Fig. 29).
18. Remove the right side secondary chain guide.
19. Remove the retaining bolt and the camshaft drive gear.
CAUTION: Do not allow the engine to rotate. Severe damage to the valve train can occur.
CAUTION: Do not overlook the four smaller bolts at the front of the cylinder head. Do not attempt to remove the cylinder head without
removing these four bolts.
CAUTION: Do not hold or pry on the camshaft target wheel for any reason. A damaged target wheel can result in a vehicle no start condition.
NOTE: The cylinder head is attached to the cylinder block with fourteen bolts.
20. Remove the cylinder head retaining bolts.
21. Remove the cylinder head and gasket. Discard the gasket.
CAUTION: Do not lay the cylinder head on its gasket sealing surface, do to the design of the cylinder head gasket any distortion to the cylinder
head sealing surface may prevent the gasket from properly sealing resulting in leaks.
CLEANING
To ensure engine gasket sealing, proper surface preparation must be performed, especially with the use of aluminum engine components.
