Overview - A/C Compressor Power Unit
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Vehicles with 4.2L
NOTE:
If the drive plate overload protection triggers, check the A/C compressor for ease of motion before replacing the drive unit. If the A/C compressor creates friction, replace it completely.
- A/C Compressor Input Shaft
- Tightening specification: 60 Nm
- The input shaft must be seated free of play in splines of engine drive wheel with thread tightened. For checking. Refer to A/C COMPRESSOR INPUT SHAFT, REMOVING AND INSTALLING .
- Loosening and tightening. Refer to A/C COMPRESSOR INPUT SHAFT, LOOSENING AND TIGHTENING .
- Removing and installing. Refer to A/C COMPRESSOR INPUT SHAFT, REMOVING AND INSTALLING .
- Grease the splines to the engine drive wheel, for example, with Lubricating Grease G 000 100.
- Hex Socket Bolt
- Tightening specification: 10 Nm
- Drive Plate
- The overload protection takes over when the torque is excessive (for example, if the A/C compressor runs with resistance) and the input shaft runs freely without driving the A/C compressor.
- Run-out, checking and adjusting. Refer to DRIVE PLATE WITH OVERLOAD PROTECTION, CHECKING RUN-OUT AND ADJUSTING .
- Removing and installing. Refer to DRIVE PLATE WITH OVERLOAD PROTECTION, REMOVING AND INSTALLING .
- Drive Plate
- Tightening specification: 30 Nm
- Attached to the A/C compressor input shaft
- The overload protection takes over when the torque is excessive (for example, if the A/C compressor runs with resistance) and the input shaft runs freely without driving the A/C compressor.
- Removing and installing. Refer to A/C COMPRESSOR DRIVE PLATE, REMOVING AND INSTALLING .
- Rubber Element
- When the drive unit de-couples, the vibrations and noises are dampened.
- When installing, coat the rubber elements B lightly using soapy water (as a lubricant).
- Removing and installing. Refer to A/C COMPRESSOR DRIVE PLATE, REMOVING AND INSTALLING .
- Spacer
- The original disc must be installed
- Dimensions: 17.5 x 10 x 3 mm
- Circlip
- Replace
- Install on correct side (flat side toward A/C compressor)
- Removing and installing. Refer to DRIVE PLATE WITH ANTI-FRICTION BEARING, REMOVING AND INSTALLING .
- Drive Plate
- With roller bearing.
- Removing and installing. Refer to DRIVE PLATE WITH ANTI-FRICTION BEARING, REMOVING AND INSTALLING .
- Clean the A/C compressor flange before installing the drive plate.
- A/C Compressor
- Different versions may be installed, depending on engine version and country version of vehicle.