ENGINE AR-COMPLETE 2240285 - Caterpillar

Dry
If steam or water is used to clean the cores, make sure that the cores are completely dry before the track-type tractor is put back to work.Use compressed air to blow dry the wet cores, the engine, engine access doors, and the hood.Close both engine access doors.If the machine is in a clean environment, start the engine and allow the fan to run until the cooling system has completely dried. Allow the machine to sit overnight before operating the machine in the work mode.Wood Chip or Waste Handling Arrangement (If Equipped)
Cooler Cores
The wood chip and waste handling arrangements have a remote mounted a/c compressor, and a single plane of the following cores: hydraulic oil cooler core, AMOCS radiator cores and aftercooler core. Additionally, these arrangements have a hydraulic fan that reverses the direction of air flow in order to purge debris.Clean
Personal injury can result from air pressure.Personal injury can result without following proper procedure. When using pressure air, wear a protective face shield and protective clothing.Maximum air pressure at the nozzle must be less than 205 kPa (30 psi) for cleaning purposes.
Pressurized air: To avoid possible engine damage, shut off engine before performing maintenance to clean the cooling system. Install air nozzle into access slot before starting air supply. Read and understand Operation and Maintenance Manual.
In applications with high levels of airborne debris, a regular schedule for cleaning the cooling cores must be established. The frequency of cleaning and the method of cleaning must be tailored to the specific debris accumulation on the job site. In order to maintain clean cores, the cleaning will need to be done at least daily. Cleaning may be needed on a more frequent basis. The clean out schedule must be followed even when ambient temperatures are low. This will prevent debris accumulation in the cores and future plugging.Access to the cores is through the engine access doors from the rear of the cores which results in blowing air in the same direction as the normal air flow through the fan. The wood chip and Waste Handling arrangements offer two options for blowing air in the opposite direction of normal fan air flow. First, the reverse fan function has a continuous reverse mode. This allows prolonged periods of the reverse flow while the machine is parked. Next, slots are provided in both sides of the radiator guard for use with a 307-6728 Air Nozzle which concentrates air flow backward through the cores.Blow out the cores with compressed air. Move the air nozzle in a systematic pattern so that the air flow covers the whole core that includes the areas in the corners. Do not use steam or high pressure water for cleaning frequently. If steam or high pressure water is required to dislodge any debris that is held deep in the cores, make sure that the cleaning is thorough. This may require opening radiator doors and removing debris guards for access. Incomplete cleaning with water may cause remaining debris to harden in