GM Full-Size Trucks 1970-1979 Repair Guide

Vacuum Advance

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REMOVAL & INSTALLATION



  1. Remove the distributor cap and rotor as previously described.
  2.  
  3. Disconnect the vacuum hose from the vacuum advance unit.
  4.  
  5. Remove the two vacuum advance retaining screws, pull the advance unit outward, rotate and disengage the operating rod from its tang.
  6.  
  7. Reverse the above procedure to install.
  8.  

 
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