K Yukon/Denali 4WD V8-6.5L DSL Turbo VIN S (1999)
at each end. A paint stripe identifies the upper end of the push rod. If the paint stripe is not visible, mark the push rod on the upper end as the push
rods are removed.
5. Remove the push rods from the engine block.
6. Remove the valve rocker arms from the cylinder head.
7. Insert a screwdriver into the valve rocker arm shaft bore and break off the end of the nylon valve rocker arm retainers.
8. Remove the valve rocker arm retainers with a pair of pliers.
9. Slide the valve rocker arms from the rocker arm shaft.
10. Inspect each of the valve train components. Refer to Valve Rocker Arm and Shaft Clean and Inspect.
INSTALLATION PROCEDURE
NOTICE: All valve train components must be reassembled in the exact order and position from which they were removed.
IMPORTANT: Lubricate the valve rocker arms with clean engine oil before installing.
1. Install the valve rocker arms to the valve rocker arm shaft (one type of valve rocker arm is used at all locations) to the cylinder head.
2. Install the valve rocker arm retainers to the cylinder head.
3. Center the valve rocker arm on the corresponding holes in the valve rocker arm shaft.
4. Use a drift of at least 13 mm (1/2 inch) in diameter to install new retainers to the valve springs.
NOTICE: Install the valve pushrods with the copper-colored, painted, or marked end up in order to avoid damage or premature wear.
5. Install the push rod, with the painted or marked end up to the engine block.
