Coupler HVAC: Description and Operation

Spring Lock Coupling:

Spring Lock Coupling
The spring lock coupling is a refrigerant line coupling held together by a garter spring inside a circular cage.
^ When the coupling is connected together, the flared end of the female fitting slips behind the garter spring inside the cage of the male fitting.
^ The garter spring and cage then prevent the flared end of the female fitting from pulling out of the cage.
^ The O-ring seals are green in color and are made of a special material.
^ Use only the green O-ring seals listed in the Ford Master Parts Catalog for the spring lock coupling.
^ A plastic indicator ring is used on the spring lock couplings of the A/C evaporator core to indicate, during vehicle assembly, that the coupling is connected. Once the coupling is connected, the indicator ring is no longer necessary but will remain captive by the coupling near the cage opening.
^ An A/C tube lock coupling clip may be used to secure the coupling but is not necessary.







Air Conditioning Line (Peanut) Fitting
The air conditioning line (peanut) fitting is an integral part of the refrigeration line or component.
^ The male and female blocks of the air conditioning line (peanut) fitting are retained with a nut.
^ An O-ring seal is installed around the tube on the male block.
^ The female block is welded to the tube and is not adjustable.
^ Support the female fittings with a wrench to prevent twisting of the tubes.
^ The male block will pivot around the tube to allow for alignment with the female block during assembly.
^ When correctly assembled the male and female fittings should be flush.