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CVT Fluid Cooler Flush

CAUTION: Metal debris and friction material may become trapped in the radiator, cooling hoses, bypass valve or external CVT fluid cooler (if equipped). This debris can contaminate a newly serviced transmission, control valve or torque converter. In severe cases this debris can block or restrict flow and may cause damage to a newly serviced CVT.

Always perform a CVT Fluid Cooler Flush after any one of the following:

CVT FLUID COOLER CLEANING PROCEDURE

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. Position an oil drain pan under the CVT fluid cooler.
  2. Position an oil drain pan under the CVT oil warmer.
  3. Disconnect 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.
  4. Allow any transmission fluid that remains in the CVT fluid cooler hoses to drain into the oil drain pan.
  5. 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

      : 16mm (5/8 in)
    2. Insert extension adapter hose (B) from a can of Transmission Cooler Cleaner (NISSAN P/N: 999MP-AM006), 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.
  6. 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

    : 16mm (5/8 in)
  7. 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)
  8. Repeat steps 6-8 one additional time, then proceed to step 10.
  9. Reverse flush the CVT fluid cooler. Install Transmission Cooler Cleaner to CVT fluid cooler hose (1), then repeat steps 6-8 twice.
  10. Connect 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.
  11. Fill the transaxle assembly with CVT fluid. Refer to Replacement .
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