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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 32 (Automatic Transaxle (1 Of 2)) >> Basic Inspection >> CVT Fluid Cooler System >> CVT Fluid Cooler Flush >> CVT Fluid Cooler Cleaning Procedure

CVT Fluid Cooler Cleaning Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
  • Wear safety glasses and rubber gloves when spraying the Transmission Cooler Cleaner.
  • Spray Cooler Cleaner only in areas with adequate ventilation.
  • Avoid contact with eyes and skin.
  • Do not breathe vapors or mist from spray.
  1. Remove front under cover. Refer to Removal and Installation .
  2. Position an oil drain pan under the CVT fluid cooler.
  3. Position an oil drain pan under the CVT oil warmer.
  4. Disconnect the CVT fluid cooler hose A and CVT fluid cooler hose B from the CVT oil warmer. Refer to Exploded View .
    CAUTION: Do not reuse hose clamps.
    NOTE:
    • If rubber material from cooler hose remains on the steel tube or fitting, clean steel tube and replace rubber hose.
    • The hoses removed from the CVT fluid warmer will be flushed first in one direction and then the other.
  5. Allow any transmission fluid that remains in the CVT fluid cooler hoses to drain into the oil drain pan.
  6. Flush CVT fluid cooler and hoses using the following steps:
    1. Attach a suitable hose (A) to the CVT fluid cooler hose (1).
      GNSAWDIA1536Z-536Courtesy of NISSAN NORTH AMERICA, INC.

      Hose inside diameter

      : 16 mm (5/8 in)
    2. Insert extension adapter hose (B) from a can of Transmission Cooler Cleaner, into CVT fluid cooler hose (2).
      CAUTION:
      • Wear safety glasses and rubber gloves when spraying the Transmission Cooler Cleaner.
      • Spray Cooler Cleaner only in areas with adequate ventilation.
      • Avoid contact with eyes and skin.
      • Do not breathe vapors or mist from spray.
      NOTE: Always check with the Parts Department for latest parts information.
    3. Holding the can and hose as high as possible, spray Transmission Cooler Cleaner in a continuous stream into the CVT fluid cooler inlet side hose until it flows from the outlet side hose for five seconds.
  7. Attach a suitable hose over the end of the CVT fluid cooler hose (2) that was used as the flush inlet.
    GNSAWDIA1537Z-537Courtesy of NISSAN NORTH AMERICA, INC.

    Hose inside diameter

    : 16 mm (5/8 in)
  8. Blow compressed air through CVT fluid cooler hose (2) for 10 seconds to force remaining fluid out of CVT fluid cooler hose (1).

    Air pressure

    : 490-883 kPa (5-9 kg/cm 2 , 70-128 psi)
  9. Repeat steps 6-8 one additional time, then proceed to step 10.
  10. Reverse flush the CVT fluid cooler. Install Transmission Cooler Cleaner to CVT fluid cooler hose (1), then repeat steps 6-8 twice.
  11. Install CVT fluid cooler hose A and CVT fluid cooler hose B to the CVT oil warmer. Refer to Exploded View .
    CAUTION: Do not reuse hose clamps.
  12. Fill the transaxle assembly with CVT fluid. Refer to Replacement .
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