OEM 2007 Mercury Mariner A/C Accumulator

2007 Mercury Mariner A/C Accumulator Parts Questions & Experts Answers

• Q: How to Service the A/C Accumulator in the HVAC System on 2007 Mercury Mariner?

  A: Refrigerant recovery must be the first step when servicing the suction accumulator in the HVAC system. The technician should first detach the electrical connector of the A/C cycling switch before removing and discarding both suction accumulator inlet and outlet fittings along with their O-ring seals. The suction accumulator bracket has two retaining nuts that need removal but the installation requires the same tighten torque at 8 Nm (71 lb-in) for both nuts. The service requires following the reverse order of removal steps while introducing fresh O-ring seals and applying the recommended PAG oil volume to the refrigerant system. The suction accumulator should be installed in reverse orientation for hybrid vehicles before fitting it at the evaporator core and reorienting it to its proper placement. The last authorized steps include evacuation of the refrigerant system followed by leak testing and charging the system with refrigerant. The replacement of a suction accumulator becomes necessary only when manifest physical problems from compressor failure or before/during existing accumulator damage can be observed.