CAGE-BEARING 5K4079 - Caterpillar

Service Hours and Fuel Consumption
Table 1
Service Hours and Fuel Consumption for 3512 Engines    
Interval     Fuel Consumption    
250 service hours    
43,750 L (11,560 US gal)    
500 service hours    
87,500 L (23,115 US gal)    
1000 service hours    
175,000 L (46,230 US gal)    
2000 service hours    
350,000 L (92,460 US gal)    
3000 service hours    
525,000 L (138,690 US gal)    
Top end overhaul     4000 service hours    
787,500 L (208,030 US gal)
6000 service hours    
1,050,000 L (277,380 US gal)    
Major overhaul     8000 service hours    
1,575,000 L (416,070 US gal) Severe Operation
Severe operation is the use of an engine that exceeds current published standards for that engine. Caterpillar maintains standards for the following engine parameters:
Horsepower
Range of rpm
Fuel consumption
Fuel quality
Altitude
Maintenance intervals
Selection of oil
Selection of coolant
Environmental qualities
InstallationRefer to the standards for your engine or consult your Caterpillar dealer in order to determine if your engine is operating within the defined parameters.Severe operation can accelerate component wear. Engines that are operating under severe conditions may need more frequent maintenance intervals for the following reasons:
Maximum reliability
Retention of full service lifeBecause of individual applications, it is not possible to identify all of the factors which can contribute to severe operation. Consult your Caterpillar dealer about the maintenance that is needed for your specific engine.The following factors can contribute to severe operation: environment, improper operating procedures and improper maintenance practices.Environmental Factors
Extreme Ambient Temperatures
Extended operation in environments that are extremely cold or hot can damage components. Valve components can be damaged by carbon buildup if the engine is frequently started and stopped in very cold temperatures. Extremely hot inlet air reduces the performance capabilities of the engine.Note: Refer to this Operation and Maintenance Manual, "Cold Weather Operations" topic (Operation Section), or refer to Supplement, SEBU5898, "Cold Weather Recommendations".Cleanliness
Unless the equipment is cleaned regularly, extended operation in a dirty environment and in a dusty environment can damage components. Built up mud, dirt, and dust can encase components. This can make maintenance difficult. The buildup can contain corrosive chemicals. Corrosive chemicals and salt can damage some components.Altitude
Engines are set to operate within a certain altitude. Operating above this altitude can cause engine damage. Adjustments are necessary for operation at higher altitudes.Improper Operating Procedures
Extended operation at low idle
Minimum cool down periods after high load factor operation
Operating the engine at loads that are greater than the rated load
Operating the engine at speeds that are greater than the rated rpm
Use of the engine for an application that is not approvedImproper Maintenance Practices
Extension of maintenance intervals
Not using recommended fuel, lubricants, and coolant/antifreeze