OEM 2000 Chevrolet Venture A/C Expansion Valve

2000 Chevrolet Venture A/C Expansion Valve Parts Questions & Experts Answers

• Q: How to replace the A/C Expansion Valve on 2000 Chevrolet Venture?

  A: Start the thermal expansion valve replacement by recovering refrigerant then raising the vehicle. Remove the bolt from the a/c line block fittings while immediately applying caps or tape on open a/c refrigerant lines. The procedure requires a separation of the line block fitting before throwing away the o-ring seal while using caps or tape to secure the a/c line from contamination. Start the procedure by dropping the vehicle and taking out the trim from the left rear quarter area. Beginning at the thermal expansion valve remove its line block fitting nut before gradually pulling up the a/c lines through the vehicle floor and apply caps or tape to the open lines. The o-ring seals should be discarded before using caps or tape to secure the lines against contamination. After removing the bolts from the exposed thermal expansion valve the technician should pull out the valve from its position on the evaporator core lines while re-applying caps or tape to the open lines. Before installing the evaporator lines users must remove their protective caps or tape then wipe the intended seal surfaces with a lint-free material. The new o-ring seal must receive a thin coating of mineral base 525 viscosity refrigerant oil before installation on the a/c line so the oil completely remains within the designated area. The thermal expansion valve should be installed onto the evaporator core lines before tightening bolts through the thermal expansion valve until they reach 5 n.m (44 lb in). Recover the tape or cap from the a/c lines before cleaning each sealing surface so you can complete the o-ring seal coating process and reinstallation. After carefully inserting the a/c lines through the vehicle floor they should reach the thermal expansion valve position. Then install the retaining nut to the line block fitting and secure it with 5 n.m (44 lb in) torque. Remove the left rear quarter trim after raising the vehicle and follow by removing the tape or cap from the a/c lines. Secure the a/c line by mounting the new o-ring seal that received refrigerant oil onto the sealing surface until it takes proper position. Keep the oil inside the marked area while sealing the joint. Position the a/c line block fitting followed by its bolt before torquing it to 20 n.m (15 lb ft). After the vehicle lowers down you should evacuate the system followed by charging it before performing a leak test.