GM Metro/Sprint 1985-1993 Repair Guide

Expansion Valve

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REMOVAL & INSTALLATION



See Figure 1



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Fig. Fig. 1: Expansion valve mounted on the evaporator core

  1. Disconnect the negative battery cable.
  2.  
  3. Discharge the air conditioning system.
  4.  
  5. Remove the evaporator assembly from the vehicle.
  6.  
  7. Remove the clamps to separate the upper and lower halves.
  8.  
  9. Using backup wrenches, remove the expansion valve from the evaporator.
  10.  

To install:
  1. Install the expansion valve on the evaporator and tighten to 18 ft. lbs. (25 Nm).
  2.  
  3. Install the clamps to join the upper and lower halves.
  4.  
  5. Install the evaporator assembly in the vehicle.
  6.  
  7. Evacuate and recharge the air conditioning system.
  8.  
  9. Connect the negative battery cable.
  10.  

 
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