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Nissan Armada 2025-2026 Service and Repair Manual: Low-Pressure Pipe

Nissan Armada 2025-2026 Service and Repair Manual / Ventilation, Heater & Air Conditioner / Heater & Air Conditioning System / Cooler Pipe and Hose / Low-Pressure Pipe

Removal and Installation

WARNING:

  • Jacking up or lifting up the vehicle may the vehicle height to go down which cause a personal injury and/or damage to the air suspension component parts. Refer to Precaution for when Jacking and Lifting Up the vehicle with Electronic Air Suspension System (With electronic air suspension).
  • When checking under the vehicle or inside wheel house, always turn OFF the electronic air suspension function with the vehicle unladen and normal height, since the suspension may accidentally move and it can lead to personal injury. Refer to Precaution for Electronic Air Suspension System (With electronic air suspension).

REMOVAL

CAUTION:

  • Perform lubricant return operation before each refrigeration system disassembly. However, if a large amount of refrigerant or lubricant leak is detected, never perform lubricant return operation. Refer to Perform Lubricant Return Operation.

  • When disconnect the A/C piping related parts, cap or wrap the joint of those parts with suitable material such as vinyl tape to avoid the entry of air.

Use a refrigerant collecting equipment (for HFO-1234yf) to discharge the refrigerant. Refer to Recycle Refrigerant.

Remove front heater outlet pipe assembly. Refer to Removal and Installation.

Remove front heater pipe assembly. Refer to Removal and Installation.

Disconnect 12V sub battery harness 1 connectors , , , and (with 12V sub battery models).

Disengage fixing clip, and then move 12V sub battery harness 1 to secure work space (with 12V sub battery models).

: Clip

Disconnect low-pressure flexible hose from low-pressure pipe. Refer to Removal and Installation.

Remove low-pressure pipe mounting nuts .

Remove mounting bolt , and then disconnect low-pressure pipe from front expansion valve.

Remove mounting bolt , and then disconnect low-pressure pipe from rear cooler pipe assembly.

Remove low-pressure pipe from tube clip 2 .

Remove low-pressure pipe from vehicle.

INSTALLATION

Note the following items, and then install in the reverse order of removal.

CAUTION:

  • To prevent leakage of refrigerant, replace the O-ring with a new one. Apply a coat of compressor oil to the O-ring prior to installation.

  • Use a refrigerant collecting equipment (for HFO-1234yf) to charge the refrigerant. Refer to Charge Refrigerant.

  • Perform a check for refrigerant leakage when charging with refrigerant. Refer to Leak Test.

    Other materials

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