Vanden Plas (X300) L6-4.0L (AJ16) (1996)
Valve Clearance: Adjustments
Valve Clearance, Check and Adjust
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Remove camshaft cover.
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Rotate the engine as necessary to measure the valve clearances between the heel of the cam and the cam follower (Fig. 1). See Specifications for
the correct valve clearances.
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Make a note of each clearance measurement.
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Should the clearances be incorrect, proceed as follows:
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Rotate the engine and set No.1 cylinder at TDC using Service Tool 18G 1433A (1 Fig. 2).
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Push back the lock tabs (1 Fig. 3) from the camshaft sprocket securing bolts (2 Fig. 3).
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Slacken off the bolts and tab washers.
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Remove the upper chain tensioner valve clamp bolt (3 Fig. 3), remove the clamp (4 Fig. 3) and remove the valve (5 Fig. 3).
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Using a 3 mm Allen key, wind back the tensioner (turn clockwise) until the snail engages in the park position.
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Remove the tensioner housing securing bolt (7 Fig. 3) and remove the tensioner assembly (8, 9 Fig. 3).
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Remove and discard the `O' ring (9 Fig. 3) and gasket (10 Fig. 3).