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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Automatic Transmission (Re7R01B) (1 Of 2)) >> Basic Inspection >> A/T Fluid Cooler >> Cleaning >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different variant/trim than selected.
NOTE: Insufficient cleaning of the cooler inlet hose exterior may lead to inaccurate debris identification.
  1. Position an oil pan under the A/T inlet and outlet cooler hoses.
  2. Clean the exterior and tip of the cooler inlet hose.
  3. Insert the extension adapter hose of a can of Transmission Cooler Cleaner into the cooler outlet hose.
    G05726767Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:
    • Wear safety glasses and rubber gloves when spraying the Transmission Cooler Cleaner.
    • Spray Transmission Cooler Cleaner only with adequate ventilation.
    • Avoid contact with eyes and skin.
    • Never breath vapors or spray mist.
  4. Hold the hose and can as high as possible and spray Transmission Cooler Cleaner in a continuous stream into the cooler outlet hose until ATF flows out of the cooler inlet hose for 5 seconds.
  5. Tie a common white, basket-type coffee filter to the end of the cooler inlet hose.
    G05726770Courtesy of NISSAN NORTH AMERICA, INC.
  6. Insert the tip of an air gun into the end of the cooler outlet hose.
    G05726771Courtesy of NISSAN NORTH AMERICA, INC.
  7. Wrap a shop rag around the air gun tip and end of cooler outlet hose.
  8. Blow compressed air regulated to 5 to 9 kg/cm 2 (71 to 128 psi) through the cooler outlet hose to force any remaining ATF into the coffee filter.
  9. Remove the coffee filter from the end of the cooler inlet hose.
  10. Perform "INSPECTION PROCEDURE".
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