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OPERATION Intake air is drawn through the air cleaner and into the turbocharger compressor housing. Pressur- DIAGNOSIS AND TESTING - CHARGE AIR NOTE: Slight engine oil pooling in the charge air Low turbocharger boost pressure and low engine performance can be caused by leaks in the charge air (1) Loosen clamp and remove turbocharger to air inlet duct rubber sleeve from turbocharger. (2) Insert Special Tool 8442 Adapter into the rub- ber sleeve. Tighten existing clamp to 8 N·m (72 CAUTION: Do not apply more than 138 kpa (20 psi) (3) Connect regulated air supply to air fitting on Special Tool 8442 Adapter. Set air pressure to a Max- (4) Using soapy water check the air inlet ducts, rubber sleeves, charge air cooler and intake manifold REMOVAL (1) Remove front bumper. grille. (4) Remove left and right radiator trim (Fig. 3). (Fig. 3). (6) Disconnect power steering cooler loop from charge air cooler (Fig. 3). (7) Remove charge air cooler from radiator assem- bly (Fig. 3). CLEANING CAUTION: Do not use caustic cleaners to clean the NOTE: If internal debris cannot be removed from (1) If the engine experiences a turbocharger failure or any other situation where oil or debris get into the (2) Position the charge air cooler so the inlet and outlet tubes are vertical. (3) Flush the cooler internally with solvent in the direction opposite of normal air flow. (4) Shake the cooler and lightly tap on the end tanks with a rubber mallet to dislodge trapped (5) Continue flushing until all debris or oil are removed. (6) Rinse the cooler with hot soapy water to remove any remaining solvent. (7) Rinse thoroughly with clean water and blow dry with compressed air. Fig. 3 CHARGE AIR COOLER 1 - POWER STEERING COOLER LOOP VA EXHAUST SYSTEM 11 - 5 |