Maintenance 99 Cleaning Charge-Air-Cooler and Radiator Package Over time, dirt and insects will accumulate between the fins of the radiator, air conditioning condenser and charge-air-cooler. The reduced air flow reduces the heat transfer from the components to the air. This increases the load on the fan and air conditioning compressor and can result in engine overheating and other performance related problems, such as high fuel consumption, etc. Make sure the radiator/charge-air-cooler package is inspected regularly. Clean if necessary. DANGER Before working on or inspecting a vehicle, set the parking brakes, place the transmission in neutral and block the wheels.
Failure to do so can result in unexpected vehicle movement and can cause serious personal injury or death. WARNING Always wear eye protection when cleaning radiator, charge-air-cooler and condenser. Failure to follow this recommendation may result in eye injury. The simplest method to clean the package is to use air pressure or a water stream. This should be done from the back of the core. Air pressure should not exceed 30 psi (200 kPa) for radiator and charge-air-cooler cores. The use of a fin comb is also a good tool to loosen bugs and dirt from the fins. If dirt can not be cleaned off with this procedure, consult your Volvo Truck dealer.
Inspect the charge-air-cooler for cracks at every inspection. DO NOT operate the vehicle with a damaged or broken charge-air-cooler. To do so would void the warranty and the engine will not meet emission regulation requirements. W2001496