OEM Mercury Montego A/C Expansion Valve

Mercury Montego A/C Expansion Valve Parts Questions & Experts Answers

• Expansion Valve, Front
  8G1Z-19849-A
  Q: How to Service and Repair the A/C Expansion Valve on Mercury Montego?

  A: The first step for servicing the A/C expansion valve includes recovering all refrigerant from the system. After releasing the four roll restrictor cross beam bolts, you should tighten them to 55 Nm (41 lb-ft) before reinstalling. After installation of the roll restrictor bracket bolt, you should tighten it to 48 Nm (35 lb-ft). The installation of the A/C expansion valve manifold bolt requires discarding O-ring seals before tightening it to 8 Nm (71 lb-in). The two A/C expansion valve bolts need removal before getting tightened to 8 Nm (71 lb-in) during reinstallation. Dispose of the O-ring seals which were removed from the A/C expansion valve. The reverse procedure of removal should be performed for reinstallation but with new O-ring seals and proper application of clean PAG oil in the refrigerant system. The final steps include evacuation followed by a leak test and a proper charge of the refrigeration system.