OEM 2004 Chevrolet Venture A/C Expansion Valve

2004 Chevrolet Venture A/C Expansion Valve Parts Questions & Experts Answers

• Q: How to replace the A/C Expansion Valve in a system on 2004 Chevrolet Venture?

  A: Recovering the refrigerant from the a/c system represents the first step for replacing the A/C Expansion Valve (TXV). First untighten both wiper arm linkage nuts from the left side before moving this linkage out of the way. Clear the heater hoses first and after that disconnect the vacuum hose from the Brake Booster before moving it aside. First detach the Evaporator outlet tube to A/C Expansion Valve nut then disconnect the Evaporator outlet and inlet tubes from the A/C Expansion Valve. First detach the Evaporator outlet tube from the Evaporator tube line before you take out and discard the sealing washers. The refrigerant system remains protected from contamination through immediate tube covering of both the Evaporator inlet and outlet. After breaking the A/C Expansion Valve to Evaporator bolts users should extract the A/C Expansion Valve from the Evaporator core and discard both sealing washers. Use new sealing washers to install the A/C Expansion Valve on the Evaporator core while securing its position using A/C Expansion Valve to Evaporator bolts until they reach 3.2 n.m (28 lb in). To proceed with installation, first remove the protective caps from Evaporator tubes and then add new sealing washers to these tubes. Attach the Evaporator outlet tube to the inlet tube following their connection to the A/C Expansion Valve before torquing the outlet tube nut to 16 n.m (12 lb ft). You should first secure the vacuum hose to the Brake Booster before repositioning heater hoses and reconnecting the left wiper arm linkage and its nuts which require 5 n.m (44 lb in) torque. Before system completion the technician must evacuate and recharge the a/c system followed by testing fittings with a halogen leak detector (J 39400-A).