Repair Procedure: Disassembly Steps 23 - 34

23. Remove the cylinder head cover RH.
A. Remove the 12 bolts, 2 oil seal washers, and cylinder head cover.

NOTE
- Cover the hole around the timing chain with shop rags to prevent foreign material from falling into the engine.
- Do NOT damage the baffle plate when removing the cylinder head cover.

B. Remove the cylinder head cover gasket from the cylinder head cover.






C. Remove the 3 gaskets.






24. Remove engine cover No. 1 by removing the 3 clips.






25. Remove the injector driver by removing the bolt and 2 nuts.






26. Remove the timing chain cover plate.
Remove the 4 bolts, timing chain cover plate, and timing chain cover plate gasket.

27. Set the No. 1 cylinder to TDC/compression.
A. Set the timing mark to 0° on the timing chain cover by rotating the crankshaft clockwise.
B. Check that the timing marks of the camshaft timing gear assembly are aligned with the timing marks of the camshaft bearing cap.

HINT
If the timing marks are NOT aligned, turn the crankshaft one revolution (360°) clockwise and align the timing marks.






C. Using a paint marker, mark the sprocket wheel, timing mark of the camshaft timing gear assembly, and the timing chain itself.

HINT
Wipe any oil off before marking.

28. Remove the chain tensioner assembly No. 1.
A. Loosen tension from the timing chain by rotating the crankshaft 30° counterclockwise.

HINT
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:






(1) Check that the camshafts are in the neutral position shown in the illustration.






(2) Uniformly loosen and remove the 9 camshaft bearing cap M6 bolts in the sequence shown in the illustration.

HINT
Keep the camshaft horizontal while loosening the bearing cap bolts.






(3) Uniformly loosen and remove the 9 camshaft bearing cap M8 bolts in the sequence shown in the illustration.
(4) Remove the 6 camshaft bearing caps.

B. LH bank:






(1) Check that the camshafts are in the neutral position shown in the illustration.






(2) Uniformly loosen and remove the 8 camshaft bearing cap M6 bolts in the sequence shown in the illustration.

HINT
Keep the camshaft horizontal while loosening the bearing cap bolts.






(3) Uniformly loosen and remove the 8 camshaft bearing cap M8 bolts in the sequence shown in the illustration.
(4) Remove the 5 camshaft bearing caps.






31. Remove the No. 2 camshaft.
A. Remove the bolt for the No. 2 chain tensioner assembly.
B. While holding No. 2 camshaft, remove the No. 2 chain tensioner assembly.






C. While holding the No. 2 chain, slide the No. 2 camshaft out toward the front of the vehicle.

32. Remove the No. 1 camshaft.
A. Hold the rear portion of the No. 1 camshaft (with tilt position).
B. Hold the timing chain from the timing gear, and slide the No. 1 camshaft (with No. 2 chain) out toward the rear of the vehicle.

NOTE
Keep tension on the timing chain to avoid separation from the crankshaft timing gear.






C. Tie the timing chain to the oil pipe with a strap.

33. Remove camshaft No. 4.
A. Remove the bolt for the No. 3 chain tensioner assembly.
B. While holding the No. 4 camshaft, remove the No. 3 chain tensioner assembly.
C. Hold the No. 2 chain, and slide the No. 4 camshaft out toward the front of the vehicle.

34. Remove camshaft No. 3.
A. Hold the rear portion of the No. 3 camshaft (with tilt position).






B. Remove the timing chain from the timing gear, and slide the No. 3 camshaft (with the No. 2 chain) out toward the rear of the vehicle.

NOTE
Keep tension on the timing chain to avoid separation from the crankshaft timing gear.

C. Tie the timing chain to the oil pipe with a strap.