Toyota
Dodge Durango
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Heating and Air Conditioning » Description and operation
Refrigerant line couplers

DESCRIPTION

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.

OPERATION

The spring-lock coupler is held together by a garter spring inside a circular cage on the male half of the fitting (Fig. 5). 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.

Two 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.

Fig. 5 Spring-Lock Coupler - Typical Fig. 5 Spring-Lock Coupler - Typical

1 - MALE HALF SPRING-LOCK COUPLER

2 - FEMALE HALF SPRING-LOCK COUPLER

3 - SECONDARY CLIP

4 - CONNECTION INDICATOR RING

5 - COUPLER CAGE

6 - GARTER SPRING

7 - COUPLER CAGE

8 - "O" RINGS

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