Express 2500 V8-6.6L DSL Turbo (2010)
Valve Clearance: Adjustments
Valve Clearance Adjustment
Valve Clearance Adjustment
1. Remove the engine cover. Refer to Engine Cover Replacement (See: Access Cover/Service and Repair).
2. Remove 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) Engine Coolant Fan Upper Shroud Replacement (Diesel)
(See: Cooling System/Fan Shroud/Service and Repair/Engine Coolant Fan Upper Shroud Replacement).
3. Remove the fan clutch. Refer to Fan Clutch Replacement (See: Cooling System/Radiator Cooling Fan/Fan Clutch/Service and Repair).
4. Remove the upper valve rocker arm covers. Refer to Valve Rocker Arm Upper Cover Replacement - Left Side (See: Valve Cover/Service and
Repair/Valve Rocker Arm Upper Cover Replacement - Left Side) and Valve Rocker Arm Upper Cover Replacement - Right Side (LMM) (See:
Valve Cover/Service and Repair/Valve Rocker Arm Upper Cover Replacement - Right Side).
5. Rotate the crankshaft in order to bring the number 1 cylinder to top dead center (TDC) of the compression stroke. The number 1 cylinder is the
front cylinder on the right bank. The mark on the crankshaft balancer should be aligned with the mark on the engine.
6. Loosen the valve adjusting screws.
7. Insert a feeler gauge between the tip of the rocker arm and the valve bridge.