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 MANUALSFORD2009RANGER 2D PICKUP, 2.3 D, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 214 (HVAC CLIMATE CONTROL SYSTEM)DESCRIPTION AND OPERATIONAIR CONDITIONINGA/C COMPRESSOR AND CLUTCH ASSEMBLY
2009 Ford Ranger 2D Pickup, 2.3 D, Automatic
A/C Compressor and Clutch Assembly
2009 Ford Ranger 2D Pickup, 2.3 D, AutomaticSECTION A/C Compressor and Clutch Assembly
WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Internal FS18 A/C compressor components are not serviced separately. The A/C compressor is serviced only as an assembly. The clutch disc and hub, A/C compressor pulley and bearing and clutch field coil are serviceable.
The FS18 A/C compressor:
- uses a non-serviceable shaft seal.
- has a pressure relief valve installed in the rear of the compressor on 4.6L and 5.4L vehicles to protect the refrigerant system against excessively high refrigerant pressures.
- uses PAG oil or equivalent. This oil contains special additives required for the A/C compressor.
- PAG oil may have some slightly dark-colored streaks while maintaining normal oil viscosity. This is normal for this A/C compressor because of break-in wear that can discolor the oil.
Use standard oil matching procedures when installing new compressors.
| Item | Part Number | Description |
|---|---|---|
| 1 | - | A/C clutch bolt |
| 2 | 19D786 | A/C clutch disc and hub |
| 3 | 19D648 | A/C clutch disc and hub spacers |
| 4 | - | A/C compressor pulley snap ring |
| 5 | 19D784 | A/C compressor pulley |
| 6 | 19D798 | A/C clutch field coil |
The magnetic A/C clutch has the following characteristics:
- The A/C clutch drives the compressor shaft.
- When battery positive voltage (B+) is applied to the A/C clutch field coil, the clutch plate and hub assembly is drawn toward the A/C clutch pulley.
- The magnetic force locks the clutch plate and hub assembly and the A/C clutch pulley together as one unit, causing the compressor shaft to rotate.
- When B+ is removed from the A/C clutch field coil, springs in the clutch plate and hub assembly move the clutch plate away from the A/C clutch pulley.
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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.