Tacoma 4WD V6-4.0L (1GR-FE) (2006)
a. Remove the chain tensioner No. 3 bolt, then remove the chain tensioner No. 3 and camshaft timing gear.
13. REMOVE NO. 3 CAMSHAFT SUB-ASSEMBLY
NOTICE: Keep the camshaft level while it is being removed. The camshaft thrust clearance is very small and failing to keep it level could crack
or damage the cylinder head journal surface, which receives the thrust. This could subsequently lead the camshaft to seize or break. Perform these
steps to avoid such problems.
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, then 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, uniformly loosen and remove the 8 bearing cap bolts in the sequence shown in the illustration.
e. Remove the 4 bearing caps.