S10 Pickup, Sonoma 2000-2004

Valve Lifters (Tappets)

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Inspection



  1. Mark, sort, and organize the components for assembly.
  2.  
  3. Clean the components in cleaning solvent.
  4.  
  5. Dry the components with compressed air.
  6.  
  7. Inspect the valve lifter pushrod guides for excessive wear.
  8.  
  9. Inspect the valve lifter pushrod guides for cracks or damage.
  10.  
  11. Inspect the valve lifter for the following:

    Broken or damaged clip 
     
    Worn pushrod socket 
     
    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 
     
    Loose or damaged pin 
     
    Plugged oil hole
     
    Worn or damaged roller bearing. The roller should rotate freely with no binding or roughness.
     

  12.  
  13. Inspect the valve lifter guides for the following:

    For cracks or damage
     
    Excessive wear in the lifter mounting bores  
     

  14.  

 
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