SEBU7899-05 65 Maintenance Section Aftercooler Core - Clean/Test i02783957 Aftercooler Core - Clean/Test (Air-To-Air Aftercooler (If Equipped)) Note: If parts of the aftercooler system are repaired or replaced, a leak test is highly recommended. Inspect these items for good condition: welds, mounting brackets, air lines, connections, clamps, and seals. Make repairs, if necessary. SMCS Code: 1064-070; 1064-081 For more detailed information on cleaning and inspection, see Special Publication, SEBD0518, “Know Your Cooling System”. Note: Adjust the frequency of cleaning according to the effects of the operating environment. Inspect the aftercooler for these items:
damaged fins, corrosion, dirt, grease, insects, leaves, oil, and other debris. Clean the aftercooler, if necessary. i02676048 Alternator - Inspect For air-to-air aftercoolers, use the same methods that are used for cleaning radiators. SMCS Code: 1405-040 Caterpillar recommends a scheduled inspection of the alternator. Inspect the alternator for loose connections and proper battery charging. Inspect the ammeter (if equipped) during engine operation in order to ensure proper battery performance and/or proper performance of the electrical system. Make repairs, as required. Personal injury can result from air pressure. Personal injury can result without following prop- er procedure.
When using pressure air, wear a pro- tective face shield and protective clothing. Check the alternator and the battery charger for proper operation. If the batteries are properly charged, the ammeter reading should be very near zero. All batteries should be kept charged. The batteries should be kept warm because temperature affects the cranking power. If the battery is too cold, the battery will not crank the engine. The battery will not crank the engine, even if the engine is warm. When the engine is not run for long periods of time or if the engine is run for short periods, the batteries may not fully charge.
A battery with a low charge will freeze more easily than a battery with a full charge. Maximum air pressure at the nozzle must be less than 205 kPa (30 psi) for cleaning purposes. Pressurized air is the preferred method for removing loose debris. Direct the air in the opposite direction of the fan's air flow. Hold the nozzle approximately 6 mm (0.25 inch) away from the fins. The maximum air pressure for cleaning purposes must be below 205 kPa (30 psi) when the air nozzle is deadheaded. Slowly move the air nozzle in a direction that is parallel with the tubes. This will remove debris that is between the tubes. i01878164 Battery - Replace Pressurized water may also be used for cleaning.
The maximum water pressure for cleaning purposes must be less than 275 kPa (40 psi). Use pressurized water in order to soften mud. Clean the core from both sides. SMCS Code: 1401-510 Use a degreaser and steam for removal of oil and grease. Clean both sides of the core. Wash the core with detergent and hot water. Thoroughly rinse the core with clean water. Batteries give off combustible gases which can explode. A spark can cause the combustible gas- es to ignite. This can result in severe personal in- jury or death. After cleaning, start the engine and accelerate the engine to high idle rpm. This will help in the removal of debris and drying of the core. Stop the engine.
Use a light bulb behind the core in order to inspect the core for cleanliness. Repeat the cleaning, if necessary. Ensure proper ventilation for batteries that are in an enclosure. Follow the proper procedures in or- der to help prevent electrical arcs and/or sparks near batteries. Do not smoke when batteries are serviced. Inspect the fins for damage. Bent fins may be opened with a “comb”.