GM 52495729
Expansion Valve, Green Line

The first step to replace the thermal expansion valve (TXV) must be a recovery of the refrigerant from the a/c system. First remove the Evaporator tube to txv nut then disconnect both Evaporator outlet and inlet tubes that are attached to the txv. Immediately cover the Evaporator inlet and outlet tubes with caps after discarding the sealing washers because this action prevents contamination of the refrigerant system. The replacement procedure requires you to take out the txv from the Evaporator core after removing its bolts while again discarding the sealing washers. Two new sealing washers on the Evaporator core must be added before txv installation on the Evaporator core using txv-to-Evaporator bolts and tightening both bolts to 7 n.m (62 lb in). Uncover and untape both Evaporator tubes and then place new sealing washers on these tubes before attaching these tubes to the txv. Attach the Evaporator tube nut before tightening it to 27 n.m (20 lb ft). Evacuation of the a/c system must be followed by charging and completion of a halogen leak detector (J 39400-A) test on the fittings.

Recovery of refrigerant must occur as the first step before replacing the thermal expansion valve. The first step involves unfastening the Evaporator tube to thermostatic expansion valve (TXV) nut before removing the Evaporator outlet and inlet tube from the txv. Cap or tape the exposed inlet and outlet tubes of the Evaporator before discarded sealing washers to avoid contaminating the refrigerant system. The next step involves logging out of the txv to Evaporator bolts to extract the txv from the Evaporator core before discarding both sealing washers. The installation process requires new sealing washers to be inserted on the Evaporator core followed by txv installation onto the core while following fastener notice service precautions. An advanced torque of 7 n.m (62 lb in) should be used to tighten txv to Evaporator bolts. Take away tape or caps from Evaporator inlet and outlet tubes before applying new sealing washers to these connections. Install the Evaporator tube nut on top of the txv then tighten it to 17 n.m (12.5 lb ft). The a/c system needs evacuation then recharging after which one should conduct a leak test on components using halogen leak detector (J 39400-A).

The first step of A/C Expansion Valve replacement requires removing the charge air cooler inlet pipe. Next, recover the refrigerant. As a first step detach the condenser tube and Evaporator hose from the A/C Expansion Valve, then discard the existing seal washers. Take out the A/C Expansion Valve after removing its bolts while discarding both sets of seal washers. Installation requires placing new seal washers onto the Evaporator core fittings followed by the A/C Expansion Valve connection. The installation of A/C Expansion Valve bolts requires caution because they should be tightened to 7 nm (62 lb in). After positioning new sealing washers on both condenser tube and Evaporator hose fittings the installation of these components to the A/C Expansion Valve can proceed. Fasten the A/C Expansion Valve nut with torque settings at 20 nm (15 lb ft). Reinstall the charge air cooler inlet pipe while performing an evacuation and recharging procedure of the refrigerant system. Complete the leak test on all fittings by using j 39400-a halogen leak detector equipment.

The first step to replace the A/C Expansion Valve involves recovering the refrigerant from the system. Disassemble by removing the Evaporator tube to A/C Expansion Valve (TXV) nut before subtracting the Evaporator outlet and inlet tubes connected to the txv. Washers from the Evaporator must be discarded before immediately applying caps or tape to both open inlet and outlet tubes to stop contamination. The procedure requires removal of the Evaporator bolts from the txv. After taking the txv out from the core, discard the sealing washers. Placing new sealing washers onto the Evaporator core should be followed by txv installation onto the Evaporator core. Screw in the txv to Evaporator bolts then tighten them to 7 nm (62 lb in). Place new sealing washers onto the Evaporator tubes while removing their caps or tape before installation of the Evaporator tubing cap. Secure the txv with the Evaporator outlet and inlet tube before running a torque specification of 17 nm (13 lb ft) for the Evaporator tube nut. The cylinder must undergo evacuation then recharge before conducting a leak test through j 39400-a-halogen leak detector on the fittings.

The first step to replace the A/C Expansion Valve requires a recovery of refrigerant from the system. You should first unmount the surge tank from its mounting bracket before undoing the suction line and liquid line dash clips. After removing the expansion valve (TXV) nuts from both suction line and liquid line you must disconnect the txv lines from the txv. Pull out the txv components after unfastening the screws while immediately sealing all a/c components to stop contamination and throw away the sealing washers. The installation process requires removing the a/c component covers to install fresh sealing washers. Fasten the txv screws with a torque of 7 nm (62 lb in) during txv installation. After installing the txv attach the liquid line then the suction line securing nuts to 20 nm (15 lb ft). Subsequently reinstall the liquid line and suction line to their dash clips while performing an evacuation and subsequent charge of the refrigerant system. The j 39400-a halogen leak detector should be used to conduct a leak test on all fittings before reinstalling the surge tank to its bracket.

Recovery of refrigerant from the a/c system needs to happen before addressing the replacement task of the thermal expansion valve (TXV). The a/c system requires recovering refrigerant before proceeding to remove the Evaporator tube to txv nut and disconnecting the Evaporator outlet and inlet tube from the txv. The sealing washers should get discarded before applying immediate caps and tape to the open Evaporator tubes to stop refrigerant system contamination. Then secure the Evaporator inlet and outlet tube caps followed by removing the txv to Evaporator bolts while taking out the txv from the Evaporator core. Throw out the sealing washers once more. Maintenance procedures specify to position new sealing washers onto the Evaporator core before installing the txv to the core by following fastener notice guidelines in service precautions. Secure the txv to Evaporator bolts and tighten them to 7 n.m (62 lb in). Peel off the tape or cap from both the Evaporator tubes before adding new sealing washers to these components. Lay the Evaporator outlet and inlet tube onto the txv component before installing the Evaporator tube nut while securing it to a torque of 27 n.m (20 lb ft). The final step involves both evacuation and air conditioning system recharge procedures and checks with the halogen leak detector (J 39400-A) across the component's fitted areas.

One must first recover the refrigerant before starting the thermal expansion valve (TXV) replacement. The repair process starts by taking off the surge tank from its bracket and progresses to detach the suction line and liquid line from the dash clip. Begin by taking off both the liquid line and suction line nut from the TXV before disconnecting all components from the valve. You should carefully uninstall the TXV screws then remove the TXV while immediately attaching caps to all A/C components to stop system contamination. After removing the sealing washers from the A/C components you should uncover them before installing new sealing washers. Fix the TXV unit along with its screws until they reach 7 N.m (62 lb in). The suction and liquid assembly lines must be reinstalled to the TXV before tightening the nut to 20 N.m at 15 lb ft. The final steps include reattaching the suction and liquid lines to the dash clip after evacuating and charging the system using the Halogen Leak Detector J 39400-A to check for leaks. You can then put back the surge tank to its bracket.

Remove the evaporator tube to TXV nut and disconnect the evaporator outlet and inlet tube from the TXV.

Evacuate and recharge the A/C system and perform a leak test on the fittings using the Halogen Leak Detector (J 39400-A).

Evacuate and charge the refrigerant system, and conduct a leak test on the fittings using the Halogen Leak Detector (J 39400-A).

Evacuate and charge the refrigerant system, and conduct a leak test on the fittings using the Halogen Leak Detector (J39400-A).

Install the TXV nut and tighten it to 20 N.m (15 lb ft).

Begin by removing the charge air cooler inlet pipe.

Remove the TXV to evaporator bolts and take out the TXV from the evaporator core, discarding the sealing washers again.

Remove the evaporator tube to TXV nut and disconnect the evaporator outlet and inlet tube from the TXV, discarding the sealing washers.

Detach the suction line and liquid line from the dash clip, followed by the liquid line and suction line nut from the TXV.

Place new sealing washers onto the evaporator core and install the TXV to the evaporator core.

Cap off the evaporator inlet and outlet tubes immediately.