OEM 2005 Chevrolet Express 2500 Rocker Arm

2005 Chevrolet Express 2500 Rocker Arm Parts Questions & Experts Answers

• Q: How to replace the valve rocker arm and push rods on 2005 Chevrolet Express 2500?

  A: Before valve Rocker Arm and push rod replacement start by removing the valve Rocker Arm cover while keeping components to install later. All pieces need markings and ordered properly. The following steps include valve Rocker Arm removal together with valve Rocker Arm supports and valve pushrods extraction. Check the valve Rocker Arm for cleanliness and perform an inspection of both valve Rocker Arm and Pushrod components. Assembly installation requires keeping all components properly ordered while their original places serve as positions for reinstallation. The first step is to install valve pushrods while ensuring the arrow on valve Rocker Arm supports faces upward and then proceed with valve Rocker Arm support assembly. The contact areas of valve rocker arms must receive prelude gm p/n 12345501 (Canadian P/N 992704) or equivalent treatment on the valve Pushrod socket and roller pivot and valve stem tip. Commence valve Rocker Arm assembly installation starting from bolts at locations then moving to the remaining bolts at before twisting into place. The crankshaft balancer should be rotated to display the alignment mark 57-63 degrees from the engine front cover alignment tab either clockwise or counterclockwise. The valve Rocker Arm assemblies need only one installation followed by proper torquing since no subsequent valve lash adjustments should be necessary. You should reinstall the valve Rocker Arm cover after tightening all valve Rocker Arm bolts to 30 nm (22 ft. Lbs.).