Minor Compressor Repair Procedures

Remove or Disconnect

Tool Required:
J 34878 Pressure Plate Remover

1. Compressor assembly from vehicle.

Removing Pressure Plate Nut:

2. Pressure plate nut and washer from compressor drive shaft.

Installing J 34878:

3. Pressure plate from compressor drive shaft, using a J 34878.

Removing Snap Ring:

4. Snap ring and shim, using the appropriate snap ring pliers.
5. A/C compressor clutch pulley from compressor. Tap off with plastic hammer if necessary.

NOTICE: Be careful not to damage pulley when tapping it off.

6. Clutch coil wiring retainer from compressor housing (one screw).
7. Clutch coil from compressor.

Inspect
Tool Required:
J 39200 Digital Multimeter

^ Pressure plate for wear and scoring. Replace if necessary.
^ A/C compressor clutch pulley for wear and scoring. Replace if necessary.

Inspecting A/C Compressor Clutch Coil Resistance:

^ Clutch coil for resistance using a J 39200. Replace if not within specification.
^ Standard resistance: 3.0 to 3.4 ohms.

Install or Connect

1. Clutch coil to compressor.
2. Clutch coil wiring retainer to compressor housing; secure with one screw.
3. A/C compressor clutch pulley to compressor, secure with snap ring and shim.
4. Pressure plate to compressor drive shaft.

Measure

Measuring Pressure Plate Clearance:

^ Clearance between clutch pulley and pressure plate.
^ Standard clearance should be 0.4 to 0.7 mm (0.016 to 0.028-inch).

5. Pressure plate washer and nut to compressor drive shaft.

Tighten
^ Pressure plate nut to 17 Nm (13 lb.ft.).