OEM 2009 Mercury Grand Marquis A/C Accumulator

2009 Mercury Grand Marquis A/C Accumulator Parts Questions & Experts Answers

• Q: Is a New A/C Accumulator Necessary When Servicing the System on 2009 Mercury Grand Marquis?

  A: A new suction accumulator requires replacement in situations with actual contamination resulting from the failure of the A/C compressor or physical damage to the suction accumulator such as leaks or shell damage or desiccant impurity due to single-hour pressure equalization with ambient pressure. The suction accumulator should stay in place when there exists refrigerant pressure during the recovery phase. Depowering the fire suppression system is essential to prevent severe personal injuries before starting any work. Set the vehicle to NEUTRAL position on a hoist and recover the refrigerant before discarding the O-ring seals of the suction accumulator outlet fitting. Proceed with disconnecting the suction accumulator inlet fitting together with its O-ring seals then remove the A/C cycling switch electrical connector. The installation should include securing bolts on the suction accumulator with a torque setting of 15 Nm (133 lb-in) after each step. The procedure to repower the fire suppression system needs to be completed after removing the suction accumulator. The final installation requires users to reinstall the components in reverse order while installing new O-ring seals and applying correct PAG oil quantities to the refrigerant system before evacuating and performing a leak test and charging process.