OEM GMC Sierra 3500 Classic Pushrod

GMC Sierra 3500 Classic Pushrod Parts Questions & Experts Answers

• Push Rods
  10238852
  Q: How to replace the pushrod and valve rocker arm on GMC Sierra 3500 Classic?

  A:

  Start the replacement of valve Rocker Arm and push rod by taking off the Rocker Arm cover. The engine follows a firing pattern of 1, 8, 7, 2, 6, 5, 4, 3 and its cylinders 1, 3, 5, 7 exist on the left bank. The number one cylinder Spark Plug must be replaced first after which the rocker arms with the pushrods and pivot support will be organized in a rack for returning them to their correct locations. Begin by taking out the Rocker Arm bolts and then remove the rocker arms afterward together with the Rocker Arm pivot support and pushrods. Inspection and cleaning of rocker arms should be performed while inspecting the pushrods only if required. Cleaning engine oil should be used to lubricate both the rocker arms and pushrods before installation and to treat the bolt flange of the Rocker Arm. Plug the Rocker Arm pivot support and check that pushrods settle within valve lifter sockets before mounting the pushrods into proper position in the rocker arms prior to bolting the unit in place. First normalize the engine position by setting the number one Piston at top dead center compression stroke. Then install the rocker arms and bolts by following the engine firing order. Drive the Crankshaft until the number one Piston reaches top dead center compression stroke where the number one cylinder rocker arms must be in resting mode. The motor should be positioned for installation and receiving torques of 30 n.m on both the exhaust valves of cylinders 1, 2, 7 and 8 and both the intake valves of cylinders 1, 3, 4 and 5. The Crankshaft must rotate 360 degrees before tightening both the cylinder 3, 4, 5, 6 exhaust and the cylinder 2, 6, 7, 8 intake Rocker Arm bolts to 30 n.m (22 lb ft). Put back the number one cylinder Spark Plug and the Rocker Arm cover as the last step.