Chrysler Full-Size Vans 1989-1998 Repair Guide

Rocker Arm/Shafts

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REMOVAL & INSTALLATION



See Figures 1, 2, 3, 4, 5 and 6

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the engine cover.
  4.  
  5. Remove the valve cover(s).
  6.  

Note the location of the rocker arms and shaft (if equipped, typically engines prior to 1992) before removing them; after removal, place them in order for reinstallation.

  1. On earlier engines:
    1. Remove the rocker shaft bolts and retainers, then remove the shaft and rocker arms as an assembly. If the rocker arms need to be removed , keep them in order for reinstallation.
    2.  

  2.  
  3. On later engines:
    1. Remove the rocker arm retaining bolts and pivot plates, then remove the rocker arms from the cylinder head.
    2.  

  4.  
  5. To remove the pushrods (if necessary), pull them straight up and off of the lifters, and note their position for reinstallation.
  6.  



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Fig. Fig. 1: Use a socket and extension to unfasten the rocker arm retaining bolts



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Fig. Fig. 2: The rocker arms for each cylinder sit on a pivot plate-later model engines



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Fig. Fig. 3: Early model engines had their rocker arms attached to the cylinder head by a shaft



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Fig. Fig. 4: If you remove the rocker arms from the shaft, note their positions for reassembly



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Fig. Fig. 5: View of the cylinder head with its rocker arms and pushrods removed



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Fig. Fig. 6: If applicable, be sure to return the pushrods to their original locations

To install:
  1. Install the pushrods, if removed, by placing them in their original positions. Place them through the cylinder head and on the top of the lifter.
  2.  
  3. On earlier engines:
    1. Install the rocker shaft and rocker arms on the cylinder head.The rocker arm shaft should be tightened down slowly, starting with the centermost bolts.
    2.  
    3. Tighten the rocker shaft bolts to 200 inch lbs. (23 Nm).
    4.  

  4.  
  5. On later engines:
    1. Rotate the engine until the "V8" mark lines up with the TDC mark on the timing chain cover. This mark is located at 147° from the No. 1 firing position.
    2.  
    3. Install the rocker arm and pivot on the correct cylinder.
    4.  
    5. Tighten each rocker arm retaining bolt to 21 ft. lbs. (28 Nm).
    6.  

  6.  
  7. Install the valve cover(s).
  8.  
  9. Connect the negative battery cable.
  10.  
  11. Check the engine oil level.
  12.  


WARNING
Operating the engine without the proper amount and type of engine oil will result in severe engine damage.

  1. Start the engine and check for leaks.
  2.  
  3. Install the engine cover.
  4.  

 
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