How do you remove and reinstall Pushrod and Rocker Arm in V8 engine on Cadillac Escalade?

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Accepted Answer

To have access to the valley of cylinder heads to remove valve covers, remove one at a time and take out the rocker arm along with the bolts and pedestal pivot support with the help of instruction to retain the position of components for reassembly. Pack each set of components in separate containers to prevent the overall organization of its parts and assembly of rocker arms and pivot support. Third, take out the push rods and keep them separately so as to prevent dropping of the correct push rods while fixing them. Both rocker arms for each cylinder should be checked for wear, external cracks and localised failure at contact points with pushrods and valve stems, and checks should be made for smoothness of facilities pivot bearings; if any bearing is in any way worn or damaged it will not be possible to re-use the complete rocker arm. Also, check for the cracks and damages on the rocker arm pivot support pedestal and also check the hole on the pushrod end of each rocker arm is not blocked. Check the pushrod for maximum wear past the ends and to the crank webs also check for cracks at the oil hole and if the hole is blocked, straighten them using a piece of plate glass. For installation, it is advisable to apply some drops of clean engine oil or assembling lobe on the lower end of every pushrod before laying it back into position; make sure each pushrod is properly seated in the lifter socket. Use engine assembly lube to coat the extended points of the stems of the valves and upper ends of the pushrods for the initial start up and paint cleaner engine oil on the rocker arm pivot shaft and bearing after which the rocker arms should be fitted to their original positions without tightening of bolts. Turn the crankshaft until the number one piston is at TDC on the compression stroke and both pushrod of number one cylinder will be in the downward position then tighten intake valve rocker arms for cylinder numbers 1, 3, 4, and 5 and exhaust for cylinder numbers 1, 2, 7 and 8 to torque specified. Turn the crankshaft through one revolution and tighten the intake valve R arms for No.2, 6, 7 and 8 and the exhaust valve R arms for No 3, 4, 5 and 6 to the torque specified above. Last, replace the valve covers with their respective bolts, start the engine and probe for queer valve train noises, and, inspect the valve covers gaskets for signs of leakage.

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