REGULATOR-PRESSURE 1420371 - Caterpillar

The purpose of the air induction system is to provide clean air to the engine in an efficient, silent manner while the exhaust system discharges exhaust gases as quickly and as silently as possible. Engine horsepower and efficiency will be reduced if either the air inlet or exhaust becomes restricted. Good maintenance practice cannot be over emphasized.Air Cleaners (Caterpillar Dry-type Air Cleaners Only)
Regular service intervals, along with close visual inspection of the air cleaner, are necessary for proper cleaning of the engine inlet air. The service interval will vary with the weather and working conditions. Where dust conditions are severe, it will be necessary to service the air cleaner frequently. In damp weather and other conditions of little or no dust, the service interval can be extended.To extend the service life of the element, the exhaust and air cleaner inlet pipes should be arranged so that exhaust and/or oil fumes do not enter the engine air cleaner.Visual inspection of the gaskets and seals is important in keeping dust from by-passing the air cleaner. Any dirt allowed to enter, accelerates wear throughout the engine. If the condition of any of the replaceable seals and gaskets is questionable, replace them. If the sealing ends of the filter element or the element pleats are damaged, replace the element.Extra filter elements should be kept on hand for replacement or for use in the air cleaner while the element that was removed is being cleaned.When equipped with a dry-type air cleaner, a service indicator similar to the one shown is available.The air cleaner service indicator is connected to the air inlet pipe between the air cleaner and the turbocharger. It contains a red marked piston, which gradually rises with restriction to the air flow. When the entire piston is visible it will lock in this position. This indicates a need for air cleaner service. The piston will remain in this position whether or not the engine is running. After servicing the air cleaner, reset the piston by depressing the plunger in the bottom of the indicator.
AIR CLEANER SERVICE INDICATOR (OPTIONAL)Excessive engine exhaust smoke and/or loss of power may indicate the need for servicing the air cleaner. Never service the air cleaner while the engine is running. SINGLE STAGE AIR CLEANER FILTER ELEMENT: Every 10,000 miles (16 000 km), in average operating conditions, remove the filter element for inspection and cleaning. This period may be extended in clean atmosphere and can only be determined by experience.1. To remove the filter element, loosen the wing nut, remove the end cover and the filter element.2. Inspect the element and if it is damaged, install a new element.3. Remove any dirt which has accumulated on the bottom of the case and clean the filter element using one of the methods covered in the topic, FILTER ELEMENT CLEANING.
DRY TYPE AIR CLEANER4. Install the filter element and cover. When installing the filter element, the closed end of the element must be installed against the cover. Fasten the cover