OEM Chevrolet Express 1500 Rocker Arm

Chevrolet Express 1500 Rocker Arm Parts Questions & Experts Answers

• Rocker Arms
  12599650
  Q: How to replace the valve rocker arm and push rods on Chevrolet Express 1500?

  A:

  People must remove the valve Rocker Arm cover first before arranging valve rocker arms pushrods and pivot support on a rack to maintain their original placement. You must begin by removing the valve Rocker Arm bolts before proceeding to remove the valve rocker arms and the pivot support together with the pushrods. Clean up the valve rocker arms then thoroughly inspect both these parts as well as the pushrods. Reinstallation requires clean engine oil for lubricating both valve rocker arms and pushrods while applying oil to the bolt flange of valve Rocker Arm bolts. After placing the valve Rocker Arm pivot support, verify that pushrods fit correctly within valve lifter sockets while also finding their position on the ends of the rocker arms before securing the Rocker Arm bolts. The Crankshaft should be rotated until the number one piston rests at top dead center (TDC) compression stroke while the Crankshaft sprocket key points toward the 1:30 position. Apply a torque of 30 nm (22ft.lbs.) to the valve Rocker Arm bolts for cylinders 1, 2, 7, 8 exhaust and cylinders 1, 3, 4, 5 intake when the engine reaches this specific position. You should start by rotating the Crankshaft completely before torqueing each bolt at 30 nm (22 ft. Lbs.) when installing the exhaust arm bolts for 3, 4, 5 and 6 while the intake arm bolts for 2, 6, 7 and 8 receive the same torque setting. The last task involves the installation of the valve Rocker Arm cover.