Express 4500 V8-6.6L DSL Turbo (2009)
11. Loosen the valve adjusting screws.
12. Insert a feeler gage between the tip of the rocker arm and the valve bridge.
13. Adjust the valve clearance to 0.3 mm (0.0112 in). Refer to Valve Clearance Adjustment Specifications (See: Specifications/Valve Clearance
Adjustment Specifications) to determine which valves can be adjusted when the engine is at TDC.
14. Tighten the lock nut to 22 Nm (16 lb ft).
15. Install the upper valve rocker arm covers. Refer to Valve Rocker Arm Cover Replacement - Upper Left Side (See: Cylinder Head
Assembly/Valve Cover/Service and Repair/Valve Rocker Arm Cover Replacement - Upper Left Side) and Valve Rocker Arm Cover Replacement
- Upper Right Side (LMM) (See: Cylinder Head Assembly/Valve Cover/Service and Repair/Valve Rocker Arm Cover Replacement - Upper
Right Side).
16. Install the fan clutch. Refer to Fan Clutch Replacement (See: Cooling System/Radiator Cooling Fan/Fan Clutch/Service and Repair).
17. Install the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement (4.3L, 4.8L, 5.3L, 6.0L, 6.2L, 7.0L) (See: Cooling
System/Fan Shroud/Service and Repair)Engine Coolant Fan Upper Shroud Replacement (6.6L) (See: Cooling System/Fan Shroud/Service and
Repair).
18. Install the engine cover. Refer to Engine Cover Replacement (See: Access Cover/Service and Repair).
