Chevrolet Chevette/1000 1976-1988 Repair Guide

Valve Seat Insert

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REMOVAL & INSTALLATION



Diesel Engine


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Fig. Fig. 1Valve seat insert replacement on a diesel engine

  1. Check valve seat contact width, condition of seat contact, scores, dents, etc.
  2.  
  3. Check the amount of valve seat depression (from lower face of cylinder head to valve face) using a depth gauge with a valve fitted into cylinder head.
  4.  
  5. Arc-weld excess metal around inner face of the valve seat insert and allow to cool off a few minutes, then pry off the valve seat insert with screw drivers.
  6.  
  7. Press a new valve insert into the bore using a bench press. After installation of the valve seat insert, grind finish the seating face with a seat grinder carefully noting the seating angle, contact width and depression. Lap the valve and seat as the final step.
  8.  

 
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