OEM 2007 Cadillac CTS A/C Condenser

2007 Cadillac CTS Parts Questions & Experts Answers

• Q: How to replace the A/C Condenser (CZ3) in a refrigeration system on 2007 Cadillac CTS?

  A: Raising refrigerant pressure must occur before commencing condenser (CZ3) replacement work. Start by removing the radiator support brackets then the upper condenser mounting bolts and finally disconnect the auxiliary cooling fan. To disconnect the liquid line you should remove the bolt at the condenser while pulling the line straight out until the o-ring remains protected afterward. You should also remove the discharge hose bolt at the condenser before straight pulling the hose to safeguard the o-ring. Refrigerant oil should go into the condenser before you install a new condenser and an auxiliary cooling fan. Apply refrigerant oil to the o-ring prior to discharge hose installation on the condenser. Tighten the discharge hose bolt to 5.4 n.m (48 lb in). The o-ring demands a fresh application of lubrication before receiving the liquid line attachment to the condenser following proper bolt installation with a torque setting at 5.4 n.m (48 lb in). Tighten all the upper condenser bolts to 3.9 n.m (35 lb in) then secure the radiator support brackets afterward. Verify the refrigerant system by vacuuming it out completely then recharge while performing a halogen leak detector (J 39400-A) check of all repaired components' fittings.