|
|
Content .. 1697 1698 1699 1700 ..
CHARGE AIR COOLER AND PLUMBING DESCRIPTION The charge air system consists of a inlet air compressor which is part of the turbocharger housing, charge air cooler The charge air cooler is a heat exchanger that uses air flow from vehicle motion to dissipate heat from the intake OPERATION Intake air is drawn through the air cleaner and into the turbocharger compressor housing. Once inside the housing This air compression process causes heat. Pressurized air (charge air) from the turbocharger then flows forward DIAGNOSIS AND TESTING - CHARGE AIR COOLER SYSTEM - LEAKS NOTE: Slight engine oil pooling in the charge air inlet hose IS NOT premature turbocharger failure. Slight Low turbocharger boost pressure and low engine performance can be caused by leaks in the charge air cooler or 1. Loosen clamp and remove turbocharger to air inlet duct rubber sleeve from turbocharger. 2. Insert Special Tool 9556 Adapter into the rubber sleeve. Tighten existing clamp to 8 N·m (72 in. lbs.). 3. Separate the breather hose at the breather heater and block off. 4. Remove the oil level indicator and block off tube. CAUTION: Do not apply more then 0.6 bar (10 psi) air pressure to the charge air cooler system, sever dam- 5. Connect regulated air supply to air fitting on Special Tool 9556 Adapter. Set air pressure to approximately 0.6 bar (10 psi). 6. Using soapy water check the air inlet ducts, rubber sleeves, charge air cooler and intake manifold for leaks. REMOVAL - CHARGE AIR COOLER WARNING: IF THE ENGINE WAS JUST TURNED OFF, THE AIR INTAKE SYSTEM TUBES MAY BE HOT. NOTE: Note the location of the rubber air charge cooler to A/C condenser and air charger cooler to radiator 1. Disconnect the battery negative cables. 2. Remove cooling module (Refer to 7 - COOLING/ENGINE/RADIATOR - REMOVAL). 3. Remove the front grill. 4. Mark the position of the radiator upper cross member and remove cross member. 5. Unbolt the transmission auxiliary cooler and power steering cooler from the charge air cooler and set aside. 11 - 30 EXHAUST SYSTEM LX |