OEM 2001 GMC Jimmy Rocker Arm

2001 GMC Jimmy Parts Questions & Experts Answers

• Q: How to replace the valve rocker arm and push rods on 2001 GMC Jimmy?

  A: The valve Rocker Arm and push rod replacement process starts with removing the valve Rocker Arm cover while you should mark all components for correct reassembly. Secondly remove the valve rocker arms together with valve Rocker Arm supports along with valve pushrods. Make sure to designate and arrange reusable components for later use. The components require cleaning with cleaning solvent and the resulting residue must air-dry. Check the valve Pushrod socket contact surface and valve stem contact surface along with roller pivot for binding and damage and bolt threads for damage. The valve Pushrod inspection should evaluate its ability to pass oil along with a check of end contact surface erosion or wear and straightness using a flat surface for bending detection. Your inspection should also check the valve rocker support for both higher-than-normal wear and structural damage. Follow a suitable order for parts placement and restore them to their original positions. Install the valve pushrods but maintain the arrow on valve Rocker Arm supports facing upward before placing the valve Rocker Arm supports in position. Use prelube gm p/n 12345501 equivalent material to apply lubrication on the valve Pushrod socket and the roller pivot along with the valve stem tip. Begin bolting the valve Rocker Arm at positions and continue with the rest of the bolts. The crankshaft balancer needs rotation to place its alignment mark between 57-63 degrees from the engine front cover's alignment tab either in a clockwise or counterclockwise direction. The valve Rocker Arm assemblies need only be properly torqued after installation because further valve lash adjustment is not necessary. Seal the process by tightening the valve Rocker Arm bolts to 30 nm (22 ft. Lbs.) and reinstall the valve Rocker Arm cover.