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WARNING: This page is about a different car, the 2007 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: To prevent refrigerant system contamination, do not allow dirt or other foreign materials to enter the A/C compressor.

Clean the A/C compressor nose area.
Place the shaft seal on the special tool. Lubricate the shaft seal and the special tool with mineral oil or equivalent.

Fig 1: Locating Shaft Seal On Special Tool (412-094)
Courtesy of FORD MOTOR CO.
Position the shaft seal and the special tool over the A/C compressor shaft.

Fig 2: Locating Shaft Seal & Special Tool (412-094) Over A/C Compressor Shaft
Courtesy of FORD MOTOR CO.
Push the shaft seal onto the A/C compressor shaft with the special tool until seated.

Fig 3: Pushing Shaft Seal Onto A/C Compressor Shaft With Special Tool (412-058)
Courtesy of FORD MOTOR CO.
Install the shaft seal snap ring.

Fig 4: Locating Shaft Seal Snap Ring
Courtesy of FORD MOTOR CO.
Carry out the A/C Compressor-External Leak Test. For additional information, refer to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
Install the shaft seal felt.

Fig 5: Locating Shaft Seal Felt
Courtesy of FORD MOTOR CO.

Measure and adjust the clutch air gap by removing or adding A/C clutch hub spacers.

Fig 1: Measuring Clutch Air Gap (With Specification)
Courtesy of FORD MOTOR CO.
Install the A/C compressor. For additional information, refer to Air Conditioning (A/C) Compressor - 2.3L , Air Conditioning (A/C) Compressor - 3.0L or Air Conditioning (A/C) Compressor - 4.0L in this article.