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Nissan Armada 2025-2026 Service and Repair Manual: Rear Cooler Pipe Assembly

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

Removal and Installation

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.

Drain engine coolant from cooling system. Refer to ENGINE COOLANT : Draining.

Separate frame assembly and body assembly. Refer to Removal and Installation.

Disconnect front heater pipe assembly from rear cooler pipe assembly. Refer to Removal and Installation.

Disconnect low-pressure pipe from rear cooler pipe assembly. Refer to Removal and Installation.

Disconnect high-pressure pipe from rear cooler pipe assembly. Refer to Removal and Installation.

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

: vehicle front

Loosen clamps , and then disconnect heater hoses of rear cooler pipe assembly from rear heater core.

: vehicle front

Remove mounting nuts , and then remove heat shield plate.

CAUTION:

  • Work when system is cool, as the exhaust system is hot just after stopping the engine.

  • Be careful not to cut hands on heat prate.

: vehicle front

Remove mounting nuts and bolts , and then remove rear cooler pipe assembly from body.

: vehicle front

INSTALLATION

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

CAUTION:

  • Securely insert each hose, and install clamp at a position where it does not interfere with the pipe bulge.

  • 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.

NOTE:

When filling radiator with engine coolant. Refer to ENGINE COOLANT : Refilling.

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