Adjusting timing - Cylinder bank 4 - 6: Notes

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Turn engine to installation position on assembly support.
Remove fixing pin. Advance crankshaft 360° clockwise until the bore 1 OT (top dead center) in the belt pulley is aligned with the fixing bore on the crankcase. Position or fix with fixing pin (short) of special tool 9595.

Fig 1: Aligning Belt Pulley Bore 1 OT With Fixing Bore On The Crankcase
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Check camshaft adjustment at cylinder bank 4 - 6: The groove in the camshaft must face inward toward the crankcase.
View from the belt pulley side

Fig 2: Groove In The Camshaft Must Face Inward Toward The Crankcase - Cylinder Bank 4-6
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Turn engine 90° counterclockwise on the assembly support. Cylinder bank 4 - 6 faces upward.
If the allocation is correct, the narrow segment must face the cylinder head cover on the opposite side of the cylinder head.

Fig 3: Narrow Segment Must Face The Cylinder Head Cover On The Opposite Side Of The Cylinder Head - Cylinder Bank 4-6
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Fasten blocking device (special tool 9612) on the cylinder head (4 - 6).
Perform following assembly steps for timing adjustment as described from Step 7 to Step 11.
Fit oil extraction pumps
NOTE:
- The oil extraction pumps on the cylinder heads are identical parts. Therefore, the installation position and direction of rotation must be correct.
Installation position of oil extraction pump at cylinder head 1 - 3 (flywheel side).

The arrow for the direction of rotation or the marking "1 - 3" must face the crankcase.

Fit oil extraction pump. Use new sealing ring and new micro-encapsulated hexagon socket head screws.

Tightening torque: 10 Nm (7.5 ftlb.)

Fig 4: Identifying Arrow For Direction Of Rotation On Oil Extraction Pump - Cylinder Head 1-3
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Installation position of oil extraction pump at cylinder head 4 - 6 (belt pulley side).

The arrow for the direction of rotation or the marking "4 - 6" must face the crankcase.

Fit oil extraction pump. Use new sealing ring and new micro-encapsulated hexagon socket head screws.

Tightening torque: 10 Nm (7.5 ftlb.)

Fig 5: Identifying Arrow For Direction Of Rotation On Oil Extraction Pump - Cylinder Head 4-6
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Unscrew auxiliary chain tensioner, put new sealing ring on the original chain tensioner and install. Tightening torque: 80 Nm (59 ftlb.) (Wrench size 30 mm.)
NOTE: The compression springs of the auxiliary chain tensioners should be relieved after measurement. Unscrew thrust screw (wrench size 19 mm).

Allocation of chain tensioners

Fig 6: Identifying Chain Tensioner Allocation
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1. Chain tensioner, cylinder bank 4 - 6 Identification "Without"
2. Chain tensioner on crankcase Identification "1 ring"
3. Chain tensioner, cylinder bank 1 - 3 Identification "2 rings"
Installation position of the chain tensioners (engine in installed position)

Chain tensioner on the crankcase

Fig 7: Identifying Chain Tensioner On Crankcase
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Chain tensioner on cylinder bank 1 - 3

Fig 8: Identifying Chain Tensioner On Cylinder Bank 1 - 3
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Chain tensioner on cylinder bank 4 - 6

Fig 9: Identifying Chain Tensioner On Cylinder Bank 4 - 6
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Fit caps (6 ea.) for camshaft bores.