M45x AWD V8-4.5L (VK45DE) (2008)
CAUTION:
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Never loosen mounting bolts with securing anything other than the camshaft hexagonal portion or with tensioning the timing chain.
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After removing timing chain, never turn crankshaft and camshaft separately, or valves will strike the piston head.
4. Remove intake and exhaust camshaft brackets.
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Mark camshafts, camshaft brackets and bolts so placed in the same position and direction for installation.
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Equally loosen camshaft brackets and bolts in several steps in reverse order as shown in the figure.
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Lightly tapping with plastic hammer, remove camshaft bracket (No. 1) and camshaft bracket (No. 6).
NOTE: The bottom surface of each bracket will be stuck to cylinder head because of liquid gasket.
5. Remove camshaft.
6. Remove valve lifter.
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Identify installation positions, and store them without mixing them up.
INSPECTION AFTER REMOVAL
Camshaft Runout
1. Put V-block on precise flat table, and support No. 2 and 5 journal of camshaft.
CAUTION: Never support journal No. 1 (on the side of camshaft sprocket) because it has a different diameter from the other four
locations.
2. Set dial indicator vertically to No. 3 journal.
3. Turn camshaft to one direction with hands, and measure the camshaft runout on dial indicator (total indicator reading).
Standard: 0.02 mm (0.0008 in)