MUFFLER AS 3964928 - Caterpillar

Air Cleaner Service Indicator:
Periodically check the air cleaner service indicator. If the red piston remains in the visible position, the air cleaner element requires servicing. See the LUBRICATION AND MAINTENANCE PROCEDURES, Section E. Oil Filter Change Indicator:
On Vee engines, periodically check the oil filter change indicator. When the red piston has raised half way in the clear plastic window, change the oil filter elements. The engine is shipped with an opaque covering over the clear plastic window. Be sure this covering is removed. Engine Horsepower Ratings
There are two general horsepower ratings for industrial engines and two for electric set engines. They are: intermittent or continuous; standby or prime. These ratings are the recommended engine horsepower settings based upon load requirements and type of operation.Continuous and Prime Ratings:
Horsepower settings for these two ratings allow the engine to operate a constant load at full speed for long periods of time without shortening engine life.Intermittent Rating:
Horsepower settings for this rating requires the engine to be operated at full load and speed for periods up to an hour, followed by an equal time of operation at reduced load and speed.
If an engine is set for an intermittent rating and is operated for long periods of time at constant full load, the engine life will be shortened.
Standby Rating:
Horsepower settings for this rating allows the electric set to supply rated power for a period of time, after which the engine is stopped.Contact your Caterpillar dealer if there is doubt as to which rating the engine has.
Horsepower settings should only be done by authorized personnel.
Full Load Operation:
The governor control lever should remain in the full governed position while powering full load.Reduced Load Operation:
If the load varies, or is cyclic, the governor usually will adjust the engine speed as required. If a slower constant speed is desired, move the governor control lever to desired speed position.
Be sure to increase engine speed before increasing the load.
No Load Operation:
If the load is temporarily removed, engine speed may be reduced by manually moving the governor control. However, the engine may be operated at high idle without causing shortened engine life.
Never operate an electric set below 2/3 full load RPM: Overheating and possible damage could occur to the generator below this RPM.
Lugging:
Lugging can occur at any engine speed and with most applications. Lugging occurs whenever engine speed decreases below full load speed with the governor control at full load speed position; or when an increase in governor control setting will not increase engine speed.Lugging can damage an engine: Maximum fuel is injected at reduced engine speed; and the water pump, oil pump and fan run slower than required to cool the engine. Certain engine areas will become extremely hot and failure of parts could occur.Because maximum engine torque is developed, lugging - if properly used - can be useful. Lugging will not cause damage if the lugging period is short in duration, and if the engine is allowed to cool.An example of lugging could be a shovel digging through rock