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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 506 (Heater & Air Conditioning System) >> Removal And Installation >> Cooler Pipe And Hose >> Low-Pressure Pipe >> Removal and Installation - Low Pressure Pipe >> Removal

Removal and Installation - Low Pressure Pipe: Removal

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
  1. Discharge the refrigerant. Refer to HFC-134a (R-134a) Service Procedure .
  2. Drain the engine coolant (VQ40DE/VK56VD With Rear A/C only). Refer to Changing Engine Coolant .
  3. Disconnect the low-pressure pipe from the low-pressure flexible hose.
    NOTE: Cap the low-pressure pipe and low-pressure flexible hose to prevent contamination.
  4. Remove the low pressure pipe bracket nuts.
  5. Remove the heater pump. Refer to Removal and Installation .
  6. Disconnect the hose clamps (A) from the heater inlet/outlet pipes (VQ40DE/VK56VD With Rear A/C only).
    GNSDB122002Courtesy of NISSAN NORTH AMERICA, INC.
  7. Disconnect the low-pressure pipe from the expansion valve.
    NOTE: Cap the low-pressure pipe to prevent contamination.
  8. Remove the low-pressure pipe.
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