SEAL-LIP TYPE 3B1226 - Caterpillar

Fig. 10 Dry Element - Pleated Paper Air StrainerDry Element - Pleated Paper Air Strainer
Every two months, 800 operating hours or 20,000 miles whichever occurs first, remove the spring clips from either side of mounting baffle and remove the cover. Replace the pleated paper filter and remount the cleaned cover making sure the filter is in position. Make certain to replace the air strainer gasket if the entire air strainer is removed from the compressor intake.
Fig. 11 Intake AdapterIntake Adapter
When the engine air cleaner is replaced; Some compressors are fitted with intake adapters which allow the compressor intake to be connected to the engine air cleaner, turbo or supercharger. In this case, the compressor receives a supply of clean air from the engine air cleaner. When the engine air filter is changed, the compressor intake adapter should be checked. If it is loose, remove the intake adapter, clean the strainer plate, if applicable, and replace the intake adapter gasket, and reinstall the adapter securely. Check line connections both at the compressor intake adapter and at the engine or engine air cleaner. Inspect the connecting line for kinks and ruptures and replace it if necessary.Compressor Cooling
Every six months, 1800 operating hours or 50,000 miles, whichever occurs first, inspect the compressor discharge port, inlet cavity and discharge line for evidence of restrictions and carboning. If excessive buildup is noted, thoroughly clean or replace the affected parts and closely inspect the compressor cooling system. Check all compressor coolant lines for kinks and restrictions to flow. Minimum coolant line size is 9.5 mm (3/8 inch) I.D. Check coolant lines for internal clogging from rust scale. If coolant lines appear suspicious, check the coolant flow and compare to the tabulated technical data present in the back of this manual.Inspect and clean the external air cooling fins on the cylinder portion of the crankcase. If fins are cracked or broken, replace the compressor.Inspect the air induction system for restrictions.Lubrication
Every six months, 1800 operating hours or 50,000 miles, whichever occurs first; check external oil supply and return lines, if applicable, for kinks, bends, or restrictions to flow. Supply lines must be a minimum of 4.8 mm (3/1 6 inch) I.D. and return lines must be a minimum of 12.7 mm (1/2 inch) I.D. Oil return lines should slope as sharply as possible back to the engine crankcase and should have as few fittings and bends as possible. Refer to the tabulated technical data in the back of this manual for oil pressure minimum valves.Compressor Drive
Every six months, 1800 operating hours or 50,000 miles, whichever occurs first, check for noisy compressor operation. Variations in noise level in conjunction with the compression and unloaded cycles generally indicate loose or worn drive components.On belt drive compressors check for pulley and belt alignment and tension. Adjust as necessary, paying particular attention not to overtighten belt tension. Check for loose and out of aligned pulleys. Adjust or replace as necessary. Compressor crankshaft keyway damage indicates a loose pulley and