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Home >> Ford >> 2006 >> Focus ZX4 ST >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System-General Information And Diagnosis >> General Procedures >> Air Conditioning (A/C) Clutch Air Gap Adjustment

Air Conditioning (A/C) Clutch Air Gap Adjustment

SPECIAL TOOL(S)

G04653726Courtesy of FORD MOTOR CO.
 Tire and Wheel Runout Gauge Set
164-R2724 or equivalent
G04653727Courtesy of FORD MOTOR CO.
 Holding Fixture, Compressor Clutch
412-103 (T95L-19703-AH)
NOTE: The A/C clutch air gap must be measured and adjusted, using the correct method, to make sure of correct A/C function. An A/C clutch air gap that is greater than specifications may reduce A/C compressor performance, cause the A/C compressor to be inoperative or cause premature wear of the A/C clutch disc and hub and A/C compressor pulley. An A/C clutch air gap that is less than specifications may cause the A/C compressor to operate continuously, or cause premature wear of the A/C clutch disc and hub and A/C compressor pulley.
  1. Remove the A/C compressor. For additional information, refer to CLIMATE CONTROL .
  2. Install the runout gauge set.
    1. Clamp the runout gauge set on the compressor-mounting boss.
    2. Position the runout gauge set to contact the disc portion of the A/C clutch disc and hub assembly, and tighten the flex-arm.
      Fig 1: Positioning Runout Gauge Set
      G04653728Courtesy of FORD MOTOR CO.
  3. Using 2 fused jumper wires, connect the A/C clutch field coil to the power and ground from a 12V power supply.
  4. Adjust the runout gauge to the ZERO position with the A/C clutch engaged.
  5. Disconnect the compressor clutch field coil from the 12V power supply.
    6. NOTE: When the 12V power supply is disconnected from the A/C clutch field coil, the clutch air gap measurement will be displayed on the runout gauge.
    Fig 2: Identifying Clutch Air Gap Measurement
    G04653729Courtesy of FORD MOTOR CO.
  6. Record the clutch air gap measurement shown on the runout gauge.
  7. Repeat the measurement on 2 additional, equally spaced places on the A/C clutch disc and hub assembly.
  8. Remove the runout gauge set from the A/C compressor.
    • If the clutch air gap is within specification, install the A/C compressor. For additional information, refer to CLIMATE CONTROL .
    • If the clutch air gap is not within specification, proceed with A/C clutch air gap adjustment.
  9. Remove the A/C clutch disc and hub bolt.
    1. Hold the A/C clutch disc and hub with the special tool.
    2. Remove the A/C clutch disc and hub bolt.
      Fig 3: Holding A/C Clutch Disc And Hub With Special Tool
      G04653730Courtesy of FORD MOTOR CO.
  10. Remove the A/C clutch disc and hub.
    • Thread an 8 x 1.25 mm bolt into the A/C clutch disc and hub to force it from the A/C compressor shaft.
    • Lift the A/C clutch disc and hub and the A/C clutch disc and hub spacer from the A/C compressor shaft.
  11. Add or remove A/C clutch disc and hub spacers based on the measurements taken.
  12. Install the A/C clutch disc and hub.
  13. Install the A/C clutch disc and hub bolt.
    1. Hold the A/C clutch disc and hub with the special tool.
    2. Install the A/C clutch disc and hub bolt.
      • Tighten to 13 Nm (10 lb-ft).
        Fig 4: Holding A/C Clutch Disc And Hub With Special Tool
        G04653731Courtesy of FORD MOTOR CO.
  14. Repeat Steps 2 through 8 until the clutch air gap is within specification.
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