Chevrolet Cobalt Service & Repair Manual: Expansion Valve (TXV), Replace

Chevrolet Cobalt Service & Repair Manual / Air Conditioning & Heater / Component Replacement & Adjustment / Expansion Valve (TXV), Replace

1. Evacuate system as outlined under "Refrigerant Recovery" in "General Service" on main menu selection.
2. Reposition heater hoses for clearance.
3. Remove evaporator tube block to Thermal Expansion Valve (TXV) nut, Fig. 1.
4. Disconnect evaporator inlet and outlet tube block from TXV.
5. Remove evaporator inlet tube from outlet tube.
6. Remove and discard sealing washers. Cap off evaporator inlet and outlet tubes.
7. Remove TXV to evaporator nut.
8. Remove TXV from evaporator core.
9. Remove and discard TXV sealing washers.
10. Reverse procedure to install, noting the following:
  a. Install new sealing washers onto inlet and outlet tubes.
  b. Torque TXV hose fittings to 62 inch lbs.
  c. Torque TXV nut to 15 ft. lbs.

Fig. 1 Expansion Valve (TXV) replacement

    Evaporator Core, Replace
    The defroster door must be closed to allow clearance during defroster duct removal. 1. Evacuate system as outlined under "Refrigerant Recovery&q ...

    Heater Core, Replace
    1. Apply park brake. 2. Shift transmission into neutral. 3. Remove console shift lever bezel by carefully li ...

    See also:

    Chevrolet Cobalt Service & Repair Manual. Timing Chain Tensioner R & R
    1. Disconnect the negative battery cable. 2. Remove the camshaft cover. 3. Remove the timing chain tensioner, Fig. 1. 4. Remove the seal from the tensioner. ...

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