IS 250 AWD V6-2.5L (4GR-FSE) (2006)
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28. Remove the chain tensioner assembly No.1.
A. Loosen tension from the timing chain by rotating the crankshaft 30 counterclockwise.
The procedure above is to prevent the valve and piston from hitting each other when turning the crankshaft.
B. Remove the 2 bolts and No.1 chain tensioner assembly.
NOTE
Do NOT drop the No.1 chain tensioner assembly and bolts inside the timing chain cover.
29. Remove the timing chain.
A. LH bank:
(1) Loosen tension from the timing chain by rotating the crankshaft.
HINT
Oil may spray out of the holes on top of the No.3 camshaft bearing cap when rotating the crankshaft. Use shop rags to prevent any spray.
(2) Remove the timing chain from the timing gear and rest it on the camshaft timing gear assembly temporarily.
B. RH bank:
(1) Loosen tension from the timing chain by rotating the crankshaft.
NOTE
Oil may spray out of the holes on top of the No.1 camshaft bearing cap when rotating the crankshaft. Use shop rags to prevent any spray.
(2) Rotate the crankshaft clockwise until the flat surface of the timing exhaust gear assembly faces to the vertical position.
(3) Remove the timing chain from the timing gear and rest it on the camshaft timing gear assembly temporarily.
30. Remove the camshaft bearing cap.
A. RH bank:
