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Home >> Ford >> 2018 >> Focus ST >> Repair and Diagnosis >> External Pages >> Different car >> Section 134 (Climate Control System - General Information And Diagnostics) >> General Procedures >> Spring Lock Coupling >> Connect
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Spring Lock Coupling: Connect

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: It is imperative that the sealing surface of the spring lock coupling and O-ring seal be clean and completely free from debris. To prevent contamination, only new PAG oil should be used as an O-ring seal lubricant. Contamination from used PAG oil, residual PAG oil from inside the refrigerant system or a failure to thoroughly clean the fitting sealing surface will interrupt the O-ring seal-to-fitting sealing surface and cause refrigerant system leaks.

  1. 1.

    Install the spring lock coupling spring.
GFD136698Courtesy of FORD MOTOR COMPANY

  1. 2.

    Lubricate the inside of the coupling with PAG oil.
GFD136699Courtesy of FORD MOTOR COMPANY

  1. 3.

    NOTE: Use only the new O-ring seals. The use of any O-ring seals other than those specified in the Ford Catalog Advantage™ or equivalent may result in intermittent leakage during vehicle operation.

    Install the O-ring seals.

GFD136700Courtesy of FORD MOTOR COMPANY

  1. 4.

    Connect the spring lock coupling fittings with a twisting motion until the spring lock coupling spring snaps over the flared end of the female fitting.
GFD136701Courtesy of FORD MOTOR COMPANY

  1. 5.

    Install the spring lock coupling clip.