HOSE AS 3372713 - Caterpillar

Operating the Engine and the Driven Equipment
Check the gauges and the driven equipment frequently while the engine is operating under a load. The engine can be operated for extended periods of time at full load.Partial Load Operation
Extended operation at reduced load (less than 30%) may cause increased oil consumption and carbon buildup in the cylinders. Extended operation at reduced load may also cause fuel to slobber through the exhaust system. This may result in a loss of power and/or poor performance.To maintain engine efficiency and performance, apply a full load to the engine on an hourly basis, or operate the engine at a load level that is greater than 30%. This will burn excess carbon from the cylinders.When possible, before shutting down the engine after running the engine for extended periods at low load, apply a full load for approximately 30 minutes. Running the engine at full load allows excess carbon to burn from the following components: cylinders, pistons and valves. Then follow the recommended cooldown procedures.RPM for Cruising
Table 1 lists the ratings for 3500B High Displacement Marine Engines and the corresponding rated rpm. Table 1 also lists the engine rpm that is suggested for optimum fuel efficiency. For data regarding a specific engine, consult your Caterpillar dealer.Table 1 assumes the use of a fixed pitch propeller. If the vessel has a variable pitch propeller, consult your Caterpillar dealer for information on marine engine performance and reduced engine rpm.
Operating an engine above the engine's rating will reduce the service life of the engine before overhaul.
Note: For the definitions of the engine ratings, see this Operation and Maintenance Manual, "Engine Rating Definitions" topic.
Table 1
3500B High Displacement Marine Engine Ratings and Suggested RPM for Cruising
Rating Time That Is Allowed At Rated Power Rated RPM Suggested RPM for Cruising
“A” 100% n/a n/a
“B” 80% 900 850
1200 1150
1600 1520
“C” 50% 900 810
1000 900
1200 1110
1600 1450