MUFFLER AS 3977504 - Caterpillar

Priming the System
1. Move the governor control to the OFF position. 2. Open the vent valve (if equipped) on the fuel injection pump housing. 3. Operate the priming pump until the flow of fuel from the vent valve is continuous, and free of air bubbles.4. Close the vent valve (if equipped) and lock the fuel priming pump.
The fuel injection nozzles can be permanently damaged by twisting if only one wrench is used to loosen or tighten the fuel line nuts. Use one wrench to hold the nozzle and another to loosen the nut.
5. Start the engine. If the engine continues to misfire or smoke, further bleeding is necessary. 6. Loosen the fuel lines at the cylinder head.7. If the engine is equipped with a fuel priming pump, put the governor control lever in the OFF fuel position. Operate the priming pump until fuel flows free of air bubbles at the cylinder head.8. If the engine does not have a fuel priming pump, crank the engine until fuel flows free of air bubbles. Do not crank the engine for more than 30 seconds at a time without letting the electric starting motor cool for a minimum of two minutes between cranking periods.9. Tighten the fuel line nuts to 40 7 N m (30 5 lb ft).Air Cleaner
Clean or Replace
A service indicator may be mounted on the information panel or in the engine compartment. A colored piston showing in the window indicates the need for servicing the air cleaner. Replace the filter element at least once a year.
Never service the air cleaner with the engine running.
Changing Air Cleaner Elements
1. Loosen the retaining bolts and remove the end cover on the air cleaner housing.2. Remove and inspect the element for damaged pleats, gaskets or seals. Replace the element if damaged.3. Clean the inside of the housing.4. Install a new or cleaned element in the air cleaner housing.5. Install the end cover on the air cleaner housing.6. Reset the service indicator by pushing on the piston plunger.Cleaning Air Cleaner Elements
Pressure air can cause personal injury.When using pressure air for cleaning, wear a protective face shield, protective clothing and protective shoes.
Do not clean filter elements by bumping or tapping.Do not use filter elements with damaged pleats, gaskets or seals.
Air cleaner filter elements can be cleaned with either air, water or detergent. Have spare elements on hand to use while cleaning used elements.Pressure Air - 205 kPa (30 psi) Maximum Pressure
1. Direct air inside of the element along the length of the pleats.2. Direct air on the outside of the element along the length of the pleats. Direct air on the inside along the pleats. Inspect the element for any rips, tears or damage.Pressure Water - 280 kPa (40 psi) Maximum Pressure
1. Direct water on the inside of the element, along the length of the pleats.2. Direct water on the outside of the element along the length of the pleats. Air dry thoroughly before using and inspect the element.Detergent
1. Wash the element