Ram Truck 1500, 2500 & 3500 (2006-2008)

Valve Lash (Clearance) Adjustment

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3.7L, 4.7L, & 5.7L Engines



All gasoline engines covered in this section use hydraulic lifters. No maintenance or periodic adjustment is required.

5.9L & 6.7L Diesel Engines



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cables
     
    Valve cover
     
    Fuel pump gear access cover
     

  4.  
  5. Position the gear as shown and measure the clearance of the indicated valves. No adjustment is necessary if the lash falls within the following specifications:
    1. Intake-0.006-0.015 inch (0.152-0.381mm).
    2.  
    3. Exhaust-0.021-0.034 inch (0.381-0.762mm).

      Click image to see an enlarged view

      Fig. Adjust the specified valves when the mark on the pump gear is in either of the 2 positions-diesel engines



      Click image to see an enlarged view

      Fig. Use a feeler gauge to measure the valve lash-diesel engine

    4.  

  6.  
  7. Install or connect the following:

    Fuel pump access cover
     
    Valve cover
     
    Negative battery cables
     

  8.  

 
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