GM Cutlass RWD 1970-1987 Repair Guide

Injection Pump Adapter, Adapter Seal, and New Adapter Timing Mark

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REMOVAL & INSTALLATION



Skip steps 4 and 9 if a new adapter is not being installed.

  1. Remove injection pump and lines as described earlier.
  2.  
  3. Remove the injection pump adapter.
  4.  
  5. Remove the seal from the adapter.
  6.  
  7. File the timing mark from the adapter. Do not file the mark off the pump.
  8.  
  9. Position the engine at TDC of No. 1 cylinder. Align the mark on the balancer with the zero mark on the indicator. The index is offset to the right when No. 1 is at TDC.
  10.  
  11. Apply chassis lube to the seal areas. Install, but do not tighten the injection pump.
  12.  
  13. Install the new seal on the adapter using tool J-28425, or its equivalent.
  14.  
  15. Torque the adapter bolts to 25 ft.lbs. (33 Nm)
  16.  
  17. Install timing tool J-26896 into the injection pump adapter. Torque the tool, toward No. 1 cylinder, to 50 ft. lbs. (67 Nm). Mark the injection pump adapter. Remove the tool.
  18.  
  19. Install the injection pump.
  20.  

Installing the adapter seal Injection pump adapter bolts Marking the injection pump adapter

 
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