OEM Chevrolet Trailblazer Pushrod

Chevrolet Trailblazer Pushrod Parts Questions & Experts Answers

• Push Rods
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  Q: How to replace the pushrod and valve rocker arm on Chevrolet Trailblazer?

  A:

  The initial step for valve Rocker Arm and push rod replacement demands the removal of the valve Rocker Arm cover. The correct installation of valve rocker arms and pushrods and pivot support requires a rack because reinstalling them in their original positions must be possible. The valve Rocker Arm bolts as well as the valve rocker arms and valve Rocker Arm pivot support need to be removed with the pushrods. The inspection of valve rocker arms and pushrods should take place after cleaning. Reinstall the valve rocker arms and pushrods with clean engine oil on both components as well as on the bolts that touch their contact points and the flange of the valve Rocker Arm bolts. Begin with installing the valve Rocker Arm pivot support while confirming pushrods properly seat in valve lifter sockets before inserting pushrods which need to rest in the correct place at the Rocker Arm ends before tightening the bolts. Screw in all rocker arms and bolts, but leave them loose for now. Move the Crankshaft until the number one Piston reaches top dead center (TDC) of compression in the first position while keeping the Crankshaft sprocket key at 1:30. During this setting of the engine maintain a torque of 30 n.m (22 lb ft) for both the valve Rocker Arm bolts of cylinders 1, 2, 7, 8 exhaust and the bolts of cylinders 1, 3, 4, 5 intake. The technician should rotate the Crankshaft over a 360-degree span while torquing the valve Rocker Arm bolts on cylinders 3, 4, 5, 6 exhaust to 30 n.m (22 lb ft) and on cylinders 2, 6, 7, 8 intake to 30 n.m (22 lb ft). Install the valve Rocker Arm cover as the last step.