Coupler HVAC: Service and Repair

TO DISCONNECT COUPLING




1. Discharge and evacuate refrigerant from system as outlined. Fit Spring Lock Coupling Tools T81P-19623-G1 (3/8-inch), T81P-19623-G2 (1/2-inch), T83P-19623-C (5/8-inch) or T85L-19623-A (3/4-inch) to the coupling (illustration). Refrigerant Recovery
2. Close tool and push into open side of cage to expand garter spring and release female fitting.

NOTE: The garter spring may not release if the tool is cocked while pushing it into the cage opening.

3. After garter spring is expanded, pull fitting apart.
4. Remove tool from disconnected coupling.

TO CONNECT COUPLING
1. Check to ensure that the garter spring is in the cage of the male fitting. If the garter spring is missing, install a new spring by pushing it into the cage opening. If the garter spring is damaged, remove it from cage with a small wire hook (do not use a screwdriver) and install a new spring.
2. Clean all dirt or foreign material from both pieces of coupling.
3. Install new 0-rings on male fitting.

NOTE: Use only the specified 0-rings because they are made of a special material. The use of any 0-ring other than the specified 0-ring may allow the connection to leak intermittently during vehicle operation. Refer to service part number E357 19D690 A, O-ring Seal Kit for A/C Spring Lock Coupling (Kit contains 3/8, 1/2, and 5/8 inch coupling O-rings, and 3/8, 1/2, and 5/8 inch coupling garter springs).

4. Lubricate male fitting and 0-rings and inside of female fitting with clean refrigerant oil.
5. Install plastic indicator ring into cage opening if indicator ring is to be used.
6. Fit female fitting to male fitting and push until garter spring snaps over flared end of female fitting.
If plastic indicator is used, it will snap out of cage opening when coupling is connected to indicate engagement.
7. If indicator ring is not used, ensure coupling engagement by visually checking to verify garter spring is over flared end of female fitting.