Nissan Sentra Service Manual: Cooler pipe and hose

Exploded view

1. High-pressure service port
2. High-pressure pipe
3. Expansion valve
4. Low-pressure service port
5. Low-pressure flexible hose
6. Compressor
7. Refrigerant pressure sensor
8. Condenser and liquid tank assembly
9. High-pressure flexible hose

Low-pressure flexible hose

Low-pressure flexible hose : removal and installation

REMOVAL

1. Discharge the refrigerant. Refer to HA-23, "Recycle Refrigerant".
2. Remove the upper torque rod bolts (A) and the upper torque rod (1).

3. Remove the washer tank inlet bolt (A), then pull the washer tank inlet (1) up and out of the washer tank.

4. Remove the engine ground bolts (A) and the engine ground (1).

5. Remove the A/C pipe bracket bolts (A).

(1): Low-pressure service port

(2): High-pressure service port

6. Remove the push nut (A) from the expansion valve insulator (1) and reposition.

7. Remove the bolt (A) that retains the high-pressure pipe and lowpressure flexible hose to the expansion valve, then disconnect the low-pressure flexible hose from the expansion valve and high-pressure pipe.

CAUTION:

Cap or wrap the joint of the hose with suitable material such as vinyl tape to avoid the entry of air.

8. Remove the front under cover. Refer to EXT-31, "ENGINE UNDER COVER : Removal and Installation".
9. Remove the bolt that retains the high-pressure flexible hose to the compressor, then disconnect the highpressure flexible hose from the compressor.
10. Remove the bolt that retains the low-pressure flexible hose to the compressor, then disconnect the lowpressure flexible hose from the compressor.
11. Remove the low-pressure flexible hose.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Do not reuse O-rings.

• Apply A/C oil to the new O-rings.

• After charging refrigerant, check for leaks. Refer to HA-21, "Leak Test".

High-pressure flexible hose

High-pressure flexible hose : removal and installation

REMOVAL

1. Discharge the refrigerant. Refer to HA-23, "Recycle Refrigerant".
2. Remove the core support upper cover. Refer to HA-39, "Exploded View".
3. Remove the bolt (A) that retains the high-pressure flexible hose to the condenser, then disconnect the high-pressure flexible hose from the condenser and liquid tank assembly.

CAUTION:

Cap or wrap the joint of the hose with suitable material such as vinyl tape to avoid the entry of air.

4. Remove the bolt that retains the high-pressure flexible hose to the compressor, then disconnect the highpressure flexible hose from the compressor.
5. Remove the high-pressure flexible hose.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Do not reuse O-rings.

• Apply A/C oil to new O-rings.

• After charging refrigerant, check for leaks. Refer to HA-21, "Leak Test".

High-pressure pipe

High-pressure pipe : removal and installation

REMOVAL

1. Discharge the refrigerant. Refer to HA-23, "Recycle Refrigerant".
2. Remove the core support upper. Refer to HA-39, "Exploded View".
3. Remove the low-pressure flexible hose. Refer to HA-35, "LOW-PRESSURE FLEXIBLE HOSE : Removal and Installation".
4. Remove the bolt (A) that retains the high-pressure pipe to the condenser, then disconnect the high-pressure pipe from the condenser and liquid tank assembly.

CAUTION:

Cap or wrap the joint of the pipe with a suitable material such as vinyl tap to avoid the entry of air.

5. Remove the high-pressure pipe.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Do not reuse O-rings.

• Apply A/C oil to new O-rings.

• After charging refrigerant, check for leaks. Refer to HA-21, "Leak Test".