Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2004ECONOLINE E150, VAN CARGO, 4.6 WREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2176 (HVAC - CLIMATE CONTROL SYSTEM)DESCRIPTION & OPERATIONAIR CONDITIONINGSPRING LOCK COUPLING
2004 Ford Econoline E150, Van Cargo, 4.6 W
Spring Lock Coupling
2004 Ford Econoline E150, Van Cargo, 4.6 WSECTION Spring Lock Coupling
WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
| Item | Part Number | Description |
|---|---|---|
| 1 | - | Plastic indicator ring |
| 2 | - | Female fitting |
| 3 | 19E746 | A/C tube lock coupling clip |
| 4 | 19E576 | A/C tube lock coupling spring |
| 5 | - | Cage |
| 6 | 19E889 | O-ring seals |
| 7 | - | Male fitting |
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 specified green O-ring seals listed in the 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 remains 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.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.