GM 5234530
Valve Lifters

The tools you need to replace the valve lifters include a valve lifter remover (J 3049-A). Start with the removal of the lower Intake Manifold, then move proceed with the valve rocker arms and valve pushrods, making sure to put these pieces in a rack for correct reinstallment. After that, unscrew the bolts and valve lifter Pushrod guide, and lay the valve lifters vertically in a rack to ensure oil in them. If there are stuck valve lifters caused by gum or varnish deposits, use the valve lifter remover (J 3049-A) for removal. Clean valve lifter bores with a solvent and shop towel to check for excessive wear or scoring of these bores and replace the engine block if required. Also, check the Camshaft wear or damage from it and if necessary, remove it for further inspection. Clean and inspect the valve lifters and valve Pushrod guide prior to installation. Thanks. Apply grease gm p/n 12345501 or equivalent to achievable valve lifter rollers, and if recurring the valve lifters, install them in their unusual positions. Mount and tighten the valve lifter Pushrod guides to16 nm (12 ft. Lbs), then the valve Rocker Arm and pushrods, and finally reinstall the lower Intake Manifold. This is normal for new lifters at their first engine starts; an increase in the rpm's can help lift the oil pressure and reduce the noise.

To change the valley lash adjusters, first remove the Intake Manifold, valve push rods respectively ensuring that the valley lash adjusters and guides are back in their original setup. Next, remove the Lash Adjuster guide retainer and Lash Adjuster guides, then remove lash adjusters one by one off. In the case of a stuck Lash Adjuster, Lash Adjuster remover (J 3049-A) is to be used for extraction. However, after removal, lash adjusters and guides can be placed in an organizer rack. When installing the new lash adjusters, new Camshaft one alters the engine oil and oil tap, also engine oil supplement gm p/n 1051396 or equivalent is added to the engine oil. It is imperative to replace every Lash Adjuster when a new Camshaft is installed. Follow up by installing the lash adjusters one at a time now valve push rods and lastly reinstall the Intake Manifold.

For servicing and repairing the lifter / Lash Adjuster, further engine repair information is available and in case if an internal engine component does not have its own separate service procedure an option implies that no such procedure was offered from the manufacturer. Unit repair: it covers the vital service procedures, machining, cleaning, inspection, and fitting essential for overhaul of engine including cylinder boring and honing, connecting rod and bearings - fitting, crankshaft and bearings - fitting, camshaft bearings -replacement, connecting rod and Piston - disassembly, Cylinder Head - disassembly and valve train components such as valves, seats, springs, and rockers. It also contains Oil Pump - disassembly, pistons and rings - fitting thread repair, valve and seat grinding (Valve Job) related to Cylinder Head assembly, and service timing components (Chain, Belt, Gears).

Clean and inspect all parts thoroughly.

First, remove the intake manifold.

Utilize the Valve Lifter Remover (J 3049-A) for extraction.

Change the engine oil and the oil filter, and add Engine Oil Supplement GM P/N 1051396 or an equivalent to the engine oil.