REMOVAL & INSTALLATION
3.0L OHV Engine
See Figures 1 through 6
If replacing the camshaft, the valve lifters must also be replaced.
The camshaft bearings are available pre-finished to size and require no reaming for standard and 0.015 (0.38mm) undersize journal diameters.
3.0L DOHC Engine
Cylinder head camshaft journal caps and the cylinder heads should be given an identification mark to make sure they are assembled in their original position. When removed, keep the camshaft journal caps from each cylinder head with the head they were removed from. Do not mix the caps with those from another cylinder head.
Remove the cylinder head camshaft journal thrust cap first to make sure that damage to the camshaft journal thrust cap does not occur.
If the lash adjusters (tappets) and roller rocker arms are to be reused, mark the positions of the lash adjusters and rocker arms so they are reassembled into their original positions.To install:
Do not install the camshaft journal thrust caps until the rocker arms and timing chains have been installed and the camshaft journal caps are tightened into position.3.4L DOHC Engine
See Figures 7 and 8
The camshaft journal caps and the cylinder heads are numbered to make sure they are assembled in their original positions. Make sure to keep the journal caps from each cylinder head together. Do not mix the caps from each head.
Make sure to remove camshaft journal thrust caps first to ensure that damage to thrust caps does not occur.To install:
Be sure the camshaft journal caps are installed in their original positions.
See Figures 9 through 13
Degrease the camshaft using safe solvent, clean all oil grooves. Visually inspect the cam lobes and bearing journals for excessive wear. If a lobe is questionable, check all lobes and journals with a micrometer.
Measure the lobes from nose to base and again at 90°. The lift is determined by subtracting the second measurement from the first. If all exhaust lobes and all intake lobes are not identical, the camshaft must be reground or replaced. Measure the bearing journals and compare to the specifications. If a journal is worn there is a good chance that the cam bearings are worn too, requiring replacement.
If the lobes and journals appear intact, place the front and rear camshaft journals in V-blocks and rest a dial indicator on the center journal. Rotate the camshaft to check for run-out, if deviation exceeds specification, replace the camshaft.
Measure the camshaft journal diameter at the points shown in the accompanying illustration. If the If the diameters do not conform to specifications, replace the camshaft.
Check the camshaft bores for size, taper, roundness, alignment and finish. If any of these exceed the specifications given in the engine rebuilding chart at the end of this section, install new bearings or cylinder heads.Lifters
See Figure 14
To Order car parts online:--To get heavy discount on car parts .Click this link below:----
For car error code diagnosis click the link below:---
Car no start:--