OEM Mercury Montego A/C Hose

Mercury Montego A/C Hose Parts and Q&A

• A/C Hoses
  7F9Z-19835-AA
  Q: How to Service the A/C Hose for the Auxiliary Evaporator Outlet and Inlet Lines on Mercury Montego?

  A:

  A necessary first step when servicing auxiliary evaporator outlet and inlet lines is to make sectioned cuts in the underbody auxiliary lines so they become removable easily while also maintaining proper identification of the cut line(s). The auxiliary evaporator inlet and outlet lines arrive to customers in two-piece format for direct installation. Recovery of the refrigerant must begin before removal of the exhaust Muffler. Below are the steps for removing the rear driveshaft when servicing AWD vehicles. Secondly remove the exhaust heat shield followed by the procedure to disconnect and discard the O-ring seal on the auxiliary evaporator inlet line fitting and finally tighten the new fitting at 8Nm torque (71lb-in). Use this procedure again for the outlet line of the auxiliary evaporator. Begin the procedure by taking off the LH rear wheel and quarter panel moulding and then move on to unscrew the bracket bolts on both sides of the outer and inner LH rear quarter panel moulding. Finish by removing the bracket from the vehicle. After removing the LH rear Brake Caliper bolts positioning it aside you will tighten them to 35 Nm (26 lb-ft) when reinstalling. During reinstallation replace the Parking Brake Cable bolts by tightening them to 12 Nm (9 lb-ft). The repair process for AWD vehicles involves removing rear subframe bracket bolts and lower Control Arm bolt but requires torquing them to 63 Nm (46 lb-ft) and 90 Nm (66 lb-ft) when reinstalling these components. During reinstallation of the LH lower shock bolt keep torque at 142 Nm (105 lb-ft). Use a lifting table to support the rear subframe before taking out the LH rear subframe bolts; position the lowered subframe and torques these bolts to 115 Nm (85 lb-ft). The technician should support the fuel tank yet remove the LH rear fuel tank strap bolt before tightening it to 35 Nm (26 lb-ft) for reinstallation. Archive the rear auxiliary inlet and outlet line fitting nuts together with their O-ring seals whereas new fittings require 8 Nm (71 lb-in) torque when they are installed. Replace the middle rear and front auxiliary line brackets along with their bolts and nuts yet tighten them at 5 Nm (44 lb-in) after reinstalling the brackets. Follow these procedures to differentiate the lines and then position the replacement lines in the original spot before cutting the auxiliary evaporator lines in the exact location as the middle fitting. The procedure requires disconnecting middle auxiliary evaporator line fittings while unmounting and removing both front and rear auxiliary line brackets and their segments of evaporator line. Installation completion requires the exact opposite steps of removal alongside new O-ring seals, proper PAG oil lubrication of the refrigeration system followed by evacuation and leak testing until system pressurization.