GM 52468304
Tube

The first step to replace a compressor hose assembly requires full refrigerant recovery from the system. Removal starts by taking out both the coolant recovery unit and surge tank before proceeding to the air cleaner. The compressor hose assembly requires detachment from both the accumulator and the auxiliary hose connection on the assembly. The worker should detach the compressor hose assembly from both condenser and compressor while also removing the compressor hose assembly bolt from the compressor. All exposed connections require plugging or capping to avoid contamination while you pull out the compressor hose assembly from its vehicle installation. After removing hose caps from connection points you must connect the hose between the compressor and the compressor hose assembly following the fastener notice in service precautions. A compressor tightens its retaining bolt to the compressor unit at 45 n.m while performing the installation. Screw in the compressor hose assembly to the condenser while tightening it with 28 n.m (21 lb ft). Fasten the auxiliary hose at the compressor hose assembly by tightening it to 48 n.m (35 lb ft). The compressor hose assembly needs installation to the accumulator followed by tightening the a/c line to the accumulator to 48 n.m (35 lb ft). The evap and recharging process should be completed before adding the air cleaner and the coolant recovery tank or surge reservoir. Perform a leak test on the component fittings through the utilization of the halogen leak detector (J 39400-A).

The first task to replace the hvac system's Evaporator tube requires recovering refrigerant from the a/c system. Start by removing the retaining bolt from the Evaporator case followed by pulling out the Evaporator tube from the Evaporator. Finally remove its o-ring seal. After getting rid of the radiator grille and Evaporator tube from the condenser proceed. When replacing the Evaporator tube of vehicles with auxiliary a/c features you must first position the car on safety stands and then extract the tube from its underbody front tube assembly on the auxiliary a/c Evaporator and remove the o-ring seal. First apply a new o-ring seal before coating it with 525 viscosity refrigerant oil. The installation of the Evaporator tube onto the condenser requires tightening it until torque reaches 19 n.m (14 lb ft). Begin by installing a second o-ring seal then apply 525 viscosity refrigerant oil to it. After that install the Evaporator tube to the Evaporator while tightening it to 19 n.m (14 lb ft). The Evaporator tube needs to be installed onto the auxiliary a/c Evaporator underbody front tube assembly followed by fastening it to 19 n.m (14 lb ft). The safety stands should be removed before dropping the vehicle. Wrap up the task by installing the retaining bolt to the Evaporator case then tightening it to 2 n.m (18 lb in). The technician should evacuate and recharge the a/c system before conducting the halogen leak detector (J 39400-A) examination on all component fittings.

Recovery of the refrigerant becomes the initial task before replacing the evaporator tube. The removal of evaporator tube nut from both the evaporator results in disconnecting the evaporator tube from its position on the evaporator. Disassemble the evaporator tube by removing the evaporator tube nut from both the auxiliary A/C tube when equipped and separating the tube from these fittings. Start by taking off the right park/turn signal lamp together with the grille from the vehicle. The service procedure starts with disconnecting the evaporator tube from the condenser after removing the tube nut followed by evaporator tube removal from the vehicle. The procedure requires users to dispose of all used sealing washers while they need to cap all open connections. Connect the evaporator tube to the condenser while using new sealing washers before installing the evaporator tube nut with a torque of 16 N.m (12 lb ft). After installation of both components replace the grille and right park/turn signal lamp. The evaporator tube installation to auxiliary A/C tube requires new sealing washers followed by torquing the evaporator tube nut to 16 N.m (12 lb ft). Install the evaporator tube to the evaporator by using the evaporator tube nut then tighten it to 16 N.m (12 lb ft). Evacuate then recharge the system. Perform a leak test on the components using a Halogen Leak Detector (J 39400-A) for inspection of their fittings.

Start by recovering the refrigerant before you replace the suction hose on vehicles with 4.8l, 5.3l, or 6.0l engines. At this step, take off the coolant recovery reservoir. After this, separate the suction line nut off the accumulator and, if the vehicle comes with rear air, also remove the rear suction line nut . After that, unscrew the suction line bolt on the compressor and pull out the suction line from the car. For installation, reconnect the suction line to the vehicle, but use the right fastener precautions. Attach the suction line bolt to the compressor and make sure it is tightened to 35 nm (26 lb ft). When necessary, put the rear suction line nut in place, tighten it to 16 nm (12 lb attach the coolant recovery reservoir in place and then use the j 39400-a halogen leak detector to check for leaks on the fittings.

Take out the evaporator tube from the evaporator and remove the O-ring seal.

Take out the front evaporator hose from the vehicle and remove the sealing washers.

Repeat the cleaning and sealing process.

By removing the discharge line nut from the condenser.

Conduct a leak test on the fittings of the components using the Halogen Leak Detector (J 39400-A).

Connect it to the rear evaporator tube and secure it with the rear evaporator tube retaining nut, tightening it to 16 N.m (12 lb ft).

Connect the front evaporator tube to the condenser and tighten the front evaporator tube nut to the condenser to 16 N.m (12 lb ft).

Loosen them without removing them.

Remove the engine cover and detach the auxiliary evaporator outlet tube from the compressor hose.

Install a new O-ring seal coated with 525 viscosity refrigerant oil.

Reinstall the coolant recovery reservoir and perform a leak test on the fittings using the Halogen Leak Detector (J 39400-A).

First, recover the refrigerant from the system.

Clean any burrs or grease using the cleaning pad from the A/C Line Repair Kit (J 41425), ensuring to clean at least 19 mm (0.75 in) from the A/C line.

Use a tubing cutter to cut and remove the damaged section.

Remove the compressor suction nut at the accumulator and disconnect the hose from the accumulator.

Disconnect the electrical connector from the A/C recirculation switch.

It can repair damage such as rub-through, collision damage, or leakage in the rear A/C or heater lines.

Connect the auxiliary A/C evaporator tubes to the condenser tube and the accumulator, tightening the nuts to 16 N.m (142 lb in), and recharge the refrigerant into the system.

Reinstall the bolt retaining the hose to the transmission bracket, tightening it to 5 N.m (44 lb in), then lower the vehicle.

Perform a leak test on the fittings of the component using the Halogen Leak Detector (J 39400-A).

Tighten the suction line nut to the accumulator to 16 N.m (12 lb ft).

Recover the refrigerant from the A/C system.

Loosen but do not remove the driver side body mount bolts.

Reinstall the grille, connect the discharge hose to the compressor, and secure it with the compressor bolt tightened to 35 Nm (26 lb ft).

Remove the retaining nut from the engine, raise and support the vehicle, and then take out the auxiliary evaporator tube retaining nuts from the body.

Connect the auxiliary hose at the compressor and tighten it to 48 N.m (35 lb ft).

Repeat the process for the connection to the evaporator, ensuring the nut is also tightened to 16 N.m (12 lb ft).

Evacuate and recharge the A/C system, install the air cleaner, and the coolant recovery or surge tank, and perform a leak test on the fittings of the components using the Halogen Leak Detector (J 39400-A).

Recover the refrigerant from the A/C system.

Connect the discharge hose to the condenser using new sealing washers, then install and tighten the nut to 16 N.m (12 lb ft).

Hold the tool body with a 3/8" breaker bar and tighten the forcing screw until the connector collars bottom out on the LOK fitting's center shoulder.

Begin by placing the discharge hose into the vehicle, ensuring to install the discharge hose nut to the condenser and tighten it to 16 N.m (12 lb ft).

Install the heater/A/C tubes retaining nut to the stud at the frame and tighten it to 7 N.m (62 lb in).

Reinstall the coolant recovery reservoir and perform a leak test on the fittings of the component using the Halogen Leak Detector (J 39400-A).

Evacuate, charge, and leak test the A/C lines, or drain the cooling system for heater lines.

Connect the evaporator tube to the vehicle, ensuring to tighten the hose fitting to 48 N.m (35 lb ft).

Place new sealing washers, then attach the evaporator outlet tube to the accumulator and secure it with the retaining nut, tightening it to 16 N.m (12 lb ft).