Underbody Refrigerant Line Replacement

REMOVAL
Rear Heater Lines

1. Raise and support vehicle.
2. Pinch off rubber heater line hose.
3. Disconnect quick connect fitting at C-pillar.
4. Loosen one screw and remove the other screw at each of the three brackets holding the front of the line to the underbody.
5. Lower rear of line and drain coolant into a suitable container.
6. Loosen hose clamps at front of line and remove line from vehicle.

Rear Air Conditioning Lines

1. Recover A/C system. Refer to: "Service and Repair" Service and Repair
2. Hoist and support vehicle.

Fig.9 Rear Heater And A/C Lines:

3. Loosen one screw and remove the other screw at each of the three brackets holding the A/C lines to the underbody.
4. Remove both A/C lines from the two rear retaining clamps, behind rear wheel.

Fig.10 Front Lines Connected To Rear Lines:

5. Remove both compression fittings at front of A/C lines.

Fig.13 Rear A/C Block Connection:

6. Remove (1) bolt securing A/C lines to block located at A/C housing, behind rear wheel, and separate block.
7. Remove rear wheel.
8. Separate ABS harness from flex hose clamps.
9. Remove heater lines from underbody brackets.
10. Pinch off rubber heater line hoses at front of vehicle.
11. Loosen hose clamps at front of heater lines and allow them to hang from vehicle.
12. Remove rear A/C lines from vehicle.

Fig.14 Underbody Line Wedges:

13. Remove nylon wedge holding lines into rear block.

INSTALLATION

Rear Heater Lines
1. Install line into underbody straps.
2. Install line into front hose and install hose clamp.
3. Connect quick fitting at rear of line.
4. Lower vehicle.
5. Fill cooling system.

Rear Air Conditioning Lines

1. Before installation, replace all O-rings and gaskets. Coat all sealing surfaces with approved waxfree refrigerant oil.
2. Install A/C line into rear block with nylon wedge.
3. Install A/C lines into five underbody brackets.
4. Connect forward compression fittings.
5. Install bolt at sealing block to rear A/C housing.
6. Install ABS harness into clips.
7. Install heater hoses into underbody brackets.
8. Install lines into front hoses and install hose clamps.
9. Lower vehicle.
10. Evacuate and recharge system. Refer to: "Service and Repair" Service and Repair
11. Fill cooling system.