Question 1

How to replace the A/C Hose in an A/C system on Cadillac CTS?

Accepted Answer

The first step to replace the condenser tube involves recovering the refrigerant from the system. You need to start by recovering the refrigerant before moving on to remove both the air cleaner assembly with the a/c quick connect fitting from the liquid line. The first step involves lifting the vehicle before front air deflector removal. First you should remove the condenser tube to condenser retaining bolt but after that you need to disconnect the condenser tube from the fan shroud retainer clip, the condenser and the liquid line before disconnecting the a/c pressure sensor electrical connector for condenser tube removal. You should remove the a/c pressure sensor next before discarding its o-rings. Install new o-rings to the condenser tube then connect the a/c pressure sensor before attaching the condenser tube. The installation involves using the same sequence to connect the a/c pressure sensor electrical connector with the condenser tube leading to the liquid line and the condenser unit while also clipping it into the fan shroud retainer. Screw the condenser tube to the condenser-retaining bolt before torquing it to 9 n.m (80 lb in). After lowering the vehicle you should put back the front air deflector then finish by mounting the a/c quick connect fitting to the liquid line and the air cleaner assembly. The last step involves strengthening the a/c system by evacuation and recharging after testing all component fittings with the halogen leak detector (J 39400-A).

Question 2

How to Replace an A/C Hose in the Evaporator Tube System on Cadillac Escalade?

Accepted Answer

First recover the refrigerant before separating the evaporator from its tube by removing its nut. After that disconnect the evaporator tube. First disconnect the evaporator tube from the auxiliary A/C tube by removing its nut when equipped. The vehicle requires removal of both the right park/turn signal lamp together with the grille as the initial step. First disconnect the evaporator tube from the condenser and remove the evaporator tube nut from the condenser then proceed to take off the evaporator tube from the vehicle. All existing sealing washers need to be thrown out while each open connection needs to be properly sealed. New sealing washers should be used to connect the evaporator tube to the condenser before installing the evaporator tube nut to the condenser while tightening it to 16 N.m (12 lb ft). Replace the grille followed by the right park/turn signal lamp into position. Attach the evaporator tube to the auxiliary A/C tube through new sealing washers after installing the evaporator tube nut to the auxiliary A/C tube while tightening it to 16 N.m (12 lb ft). You should install the evaporator tube to the evaporator then place the evaporator tube nut to the evaporator before tightening it to 16 N.m (12 lb ft). Evacuate and recharge the system while conducting a leak test on components' fittings by using the Halogen Leak Detector (J 39400-A).

Question 3

How to Change the A/C Hose in a Cadillac XLR?

Accepted Answer

The first step to install a new air conditioning evaporator front tube is to extract refrigerant from the a/c system. Discharge the battery power after detaching the a/c tube connector at the evaporator rear line assembly. The distributer of the front evaporator inlet line needs disconnection from the body retaining clip as well as from the refrigerant pressure sensor electrical connector . Raise and support the vehicle before removing the front evaporator inlet line to A/C Condenser lower bolt but ensure to cap or tape open a/c components to avoid contamination. Use hacksaw pliers to disconnect front evaporator line inlet from A/C Condenser then remove washing seal then tape up or apply a cap on the open A/C Condenser. Lower the vehicle while you disconnect the front evaporator inlet line from the evaporator rear line assembly and discard the o-rings by capping or taping the evaporator rear line assembly. The front evaporator inlet line removal requires you to disconnect surge tank outlet hose and inlet heater hose from the underhood junction box retainer clip. To set up the front evaporator inlet line users must first attach it to the vehicle then connect surge tank outlet hose and inlet heater hose at the underhood junction box retainer clip. Apply new o-rings on the rear evaporator line assembly and then remove the front evaporator rear-line assembly cap or tape. Raise the vehicle after joining the evaporator rear line assembly to the front evaporator inlet line and then remove the cap or tape from the A/C Condenser. The front evaporator inlet line requires a new sealing washer before connection to the A/C Condenser which must be tightened to 16 nm (12 lb ft). Lower the vehicle position and connect the front evaporator inlet line to the body retaining clip and at the same time install the refrigerant pressure sensor electrical connector . Before rehanging the battery the a/c tube connector installation will take place at the evaporator rear line assembly followed by an evacuation-charging process and leak test of component fittings using j 39400-a.

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