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Home >> Jeep >> 1996 >> Grand Cherokee Limited, 5.2 Y >> Repair and Diagnosis >> External Pages >> Different car >> Section 192 (Overhaul - 46 & 47 Automatic Transmission Series) >> On-Vehicle Service >> Oil Cooler Flushing

Oil Cooler Flushing

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1996 Dodge Ram Wagon, 1996 Dodge Ram Van, 1996 Dodge Pickup, 1996 Dodge Dakota, and 1996 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Whenever transmission failure exists, oil cooler must be flushed and torque converter replaced. If vehicle is equipped with 2 oil coolers (one in radiator tank and one in front of radiator), flush oil coolers separately. DO NOT  attempt to flush both oil coolers at one time.
NOTE: Oil cooler lines are equipped with disconnect fittings. For disconnecting and installing procedures of oil cooler lines with disconnect fittings, see OIL COOLER LINE DISCONNECT FITTINGS  under ON-VEHICLE SERVICE.
CAUTION: Some models may have a drainback relief valve installed in the oil cooler supply line next to the rubber hose at the radiator. If drainback relief valve is used, it must be removed before flushing the lines. Install NEW drainback relief valve once lines are flushed.
  1. Note oil cooler supply and return lines. See Figure . Disconnect oil cooler lines at transmission. Place container under oil cooler supply line.
  2. Using hand-held suction gun filled with solvent, force solvent into oil cooler return line until solvent flows from oil cooler supply line.
  3. Continue flushing oil cooler until solvent is clear and no sign of contamination exists. Once contamination is removed, apply compressed air on line from oil cooler in light applications until remaining solvent is blown from oil cooler and oil cooler lines.
  4. Pump at least one quart of Mopar ATF Plus Type 7176 fluid through oil cooler to ensure oil cooler is free of solvent. Replace oil cooler if fluid does not flow freely through oil cooler.