Removal Procedure
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the lower intake manifold. Refer to Intake Manifold Replacement - Lower .
- Remove the valve rocker arms and the valve pushrods. Refer to Valve Rocker Arm and Push Rod Replacement
.
Important: Place the components in a rack so that the components can be reinstalled to their original location.
- Remove the bolts and valve lifter pushrod guide.
Important: Place the valve lifters in the rack in the upright position in order to maintain the oil inside the valve lifters.
- Remove the valve lifters.
Important: Some valve lifters may be stuck in the valve lifter bores because of gum or varnish deposits and may require the use of J 3049-A for removal.
- Use the J 3049-A in order to remove the stuck valve lifters.
- Use a cleaning solvent and a shop towel to clean any varnish from the valve lifter bores.
- Inspect the valve lifter bores for excessive wear or scoring. Replace the engine block if there is excessive wear or deep scoring.
- Inspect the camshaft for wear or damage. If the wear is questionable remove the camshaft and inspect. Refer to Camshaft and Bearings Cleaning and Inspection
.
Important: Components that are to be reused must be marked, sorted, and organized for assembly.
- Mark, sort, and organize the components for assembly.
- Clean the components in cleaning solvent.
- Dry the components with compressed air.
- Inspect the valve lifter pushrod guides for excessive wear.
- Inspect the valve lifter pushrod guides for cracks or damage.
- Inspect the valve lifter for the following:
- Broken or damaged clip (1)
- Worn pushrod socket (2)
- Scuffed or worn lifter body (3)
If the valve lifter shows scuffing or wear, inspect the engine block valve lifter bores for wear.
- Worn roller (4)
- Loose or damaged pin (5)
- Plugged oil hole (6)