OEM 2004 Chevrolet Impala Rocker Arm

2004 Chevrolet Impala Rocker Arm Parts Questions & Experts Answers

• Q: How to service and repair the rocker arm assembly on 2004 Chevrolet Impala?

  A: The first step to serve or fix the Rocker Arm assembly requires assembling the torque angle meter (J 45059) along with required tools. Begin by first removing the valve Rocker Arm covers together with the valve rocker bolt along with setting down all parts on a clean surface for the reassembly process. The procedure includes taking out valve rocker arms before removing the valve Rocker Arm guide plate when operating with all rocker arms removed along with push rods becoming a subsequent step. Use a suitable solution to clean push rods and valve rocker arms and bolts along with guide plates while removing all thread adhesive from the valve Rocker Arm bolts. During installation one should utilize compressed air to clear oil from the Cylinder Head tapped holes before lubricating the push rod ends with fresh engine oil and putting them back into their original positions. Install the valve Rocker Arm guide plates together with the valve rocker arms while applying gm p/n 12345493 (Canadian P/N 10953488) threadlocker or its equivalent to the Rocker Arm bolt threads. The installer should tighten the Rocker Arm bolts to 15 nm (11 ft. Lbs.) before continuing to rotate each bolt 90 degrees with the torque angle meter (J 45059). At the conclusion of this procedure install both valve Rocker Arm covers while conducting a detailed inspection of the valve train to check for noises.