4 Runner 2WD V6-4.0L (1GR-FE) (2006)
NOTICE: As the thrust clearance of the camshaft is small, the camshaft must be kept level while it is being removed. If the camshaft is not kept
level, the portion of the cylinder head which receives the shaft thrust may crack or be damaged, causing the camshaft to seize or break. To avoid
this, the following steps should be carried out.
a. Release the chain tension between the camshaft timing gear (LH bank) and crankshaft timing gear by turning the crankshaft pulley
counterclockwise slightly.
b. Hold the hexagonal portion of the No.3 camshaft with a wrench, and loosen the camshaft timing gear set bolt.
NOTICE:
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Be careful not to damage the cylinder head and valve lifter with the wrench.
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Do not disassemble the camshaft timing gear assembly.
c. Slide the camshaft timing gear and separate the No.1 chain from the camshaft timing gear.
d. Using several steps, loosen and remove the 8 bearing cap bolts uniformly in the sequence as shown in the illustration.
e. Remove the 4 bearing caps.