RAM 1500 Truck 4WD V8-5.9L VIN Z (2002)
Coupler HVAC: Description and Operation
Fig. 10 Spring-Lock Coupler - Typical
REFRIGERANT LINE COUPLER
Spring-lock type refrigerant line couplers are used to connect many of the refrigerant lines and other components to the refrigerant system. These
couplers require a special tool for disengaging the two coupler halves.
The spring-lock coupler is held together by a garter spring inside a circular cage on the male half of the fitting. When the two coupler halves are
connected, the flared end of the female fitting slips behind the garter spring inside the cage on the male fitting. The garter spring and cage prevent
the flared end of the female fitting from pulling out of the cage.
Three O-rings on the male half of the fitting are used to seal the connection. These O-rings are compatible with R-134a refrigerant and must be
replaced with O-rings made of the same material.
Secondary clips are installed over the two connected coupler halves at the factory for added blowoff protection.
