Compressor HVAC: Service and Repair
82.10.20
Air Conditioning (A/C) Compressor
Special Service Tools
All vehicles
1. Carry out the air conditioning (A/C) system recovery procedure.
2. Disconnect the battery ground cable.
Vehicles with 3.5L or 4.2L engine
1. Remove the air cleaner outlet pipe.
2. Detach the accessory drive belt.
1. Rotate the accessory drive belt tensioner counter-clockwise.
2. Detach the accessory drive belt.
Vehicles with supercharger
1. Vehicles with supercharger
Vehicles with 3.5L or 4.2L engine without supercharger
1. Remove the throttle body.
2. Install the special tools.
3. Install the special tool.
NOTE: Vehicles with 3.5L or 4.2L engine without supercharger shown, vehicles with 4.2L engine with supercharger similar.
4. Raise the engine to a suitable height.
- Adjust the engine support beam (clockwise).
- Raise the engine to a suitable height.
NOTE: Vehicles with 4.2L engine with supercharger shown, vehicles with 3.5L or 4.2L engine without supercharger similar.
5. Remove the air deflector.
6. Remove the left-hand front wheel and tire assembly.
NOTE: Right-hand shown, left-hand similar.
Left-hand drive vehicles
1. Remove the steering gear shaft pinch bolt.
2. Detach the steering gear.
3. Secure the steering gear.
Vehicles with 3.5L or 4.2L engine
1. Remove the left-hand engine mounting lower retaining bolt.
2. Lower the vehicle.
3. Lift the engine to a suitable height to access the A/C compressor retaining bolts.
- Adjust the engine support beam (clockwise).
- Lift the engine to a suitable height to access the A/C compressor retaining bolts.
NOTE: Vehicles with 4.2L engine with supercharger shown, vehicles with 3.5L or 4.2L engine without supercharger similar.
4. Raise the vehicle.
5. Remove the engine mounting and bracket assembly.
6. Disconnect the A/C compressor electrical connector.
7. Detach the A/C compressor return line.
- Remove and discard the A/C compressor O-ring seal.
- Cap the exposed port.
8. Detach the A/C compressor supply line.
- Remove and discard the A/C compressor O-ring seal.
- Cap the exposed port.
9. Remove the A/C compressor.
Installation
Vehicles with 3.5L or 4.2L engine
1. Install the A/C compressor.
- Tighten to 25 Nm.
2. Install new A/C compressor O-ring seals.
- Lubricate the new O-rings with A/C refrigerant oil.
NOTE: Un-cap the exposed ports.
3. Clean off any oil residue that may contain A/C system fluorescent dye.
4. Connect the A/C compressor supply line.
- Tighten to 20 Nm.
5. Connect the A/C compressor return line.
- Tighten to 20 Nm.
6. Connect the A/C compressor electrical connector.
7. Install the engine mounting and bracket assembly.
- Tighten to 25 Nm.
8. Lower the vehicle.
9. Lower the engine.
- Adjust the engine support beam (anticlockwise). Lower the engine.
NOTE: Vehicles with 4.2L engine with supercharger shown, vehicles with 3.5L or 4.2L engine without supercharger similar.
10. Raise the vehicle.
11. Install the left-hand engine mounting lower retaining bolt.
- Tighten to 63 Nm.
Left-hand drive vehicles
1. Detach the steering gear.
2. Attach the steering gear.
- Tighten to 100 Nm.
3. Install the steering gear shaft pinch bolt.
- Tighten to 35 Nm.
Vehicles with 3.5L or 4.2L engine
1. Install the left-hand front wheel and tire assembly.
- Tighten to 125 Nm.
NOTE: Right-hand shown, left-hand similar.
2. Fit the air deflector.
3. Remove the special tool.
NOTE: Vehicles with 3.5L or 4.2L engine without supercharger shown, vehicles with 4.2L engine with supercharger similar.
4. Remove the special tools.
5. Fit the throttle body.
Vehicles with supercharger
1. Remove the special tool.
Vehicles with 3.5L or 4.2L engine
1. Attach the accessory drive belt.
1. Rotate the accessory drive belt tensioner counter-clockwise.
2. Attach the accessory drive belt.
2. Fit the air cleaner outlet pipe.
All vehicles
1. Connect the battery ground cable.
2. Carry out the A/C system evacuation and charging procedure.