Tacoma 2WD V6-4.0L (1GR-FE) (2006)
6. REMOVE IGNITION COIL ASSEMBLY
7. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY
8. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY LH
9. SET NO. 1 CYLINDER TO TDC/COMPRESSION
10. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY
11. REMOVE NO. 4 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. While pushing down the chain tensioner No. 3, insert a pin of 1.0 mm (0.039 inch) into the hole to fix it.
b. Hold the hexagonal portion of the No. 4 camshaft with a wrench, and remove the camshaft timing gear set bolt.
NOTICE: Be careful not to damage the cylinder head and valve lifter with the wrench.
c. Separate the camshaft timing gear from the No. 4 camshaft.
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 and No. 4 camshaft.
12. REMOVE NO. 3 CHAIN TENSIONER ASSEMBLY