SCREW 5L7200 - Caterpillar

Relationship of Fuel Consumption to Service Hours
Experience has shown that maintenance intervals are most accurately based on fuel consumption. Fuel consumption corresponds more accurately to the engine load. Table 1 lists average ranges of fuel consumption and service hours for the C32 engine.
Table 1
Maintenance Interval Schedule
Fuel Consumption for C32 ACERT Commercial Diesel Engines(1)
Interval Rating
A B C D
250 Service Hours 25,000 L (6,600 US gal) 33,000 L (8,800 US gal) 40,000 L (10,500 US gal) 50,000 L (13,200 US gal)
500 Service Hours 50,000 L (13,200 US gal) 66,000 L (17,600 US gal) 80,000 L (21,000 US gal) 100,000 L (26,400 US gal)
1,000 Service Hours 100,000 L (26,400 US gal) 132,000 L (35,200 US gal) 160,000 L (42,000 US gal) 200,000 L (52,800 US gal)
2,000 Service Hours 200,000 L (52,800 US gal) 264,000 L (70,400 US gal) 320,000 L (84,000 US gal) 400,000 L (105,600 US gal)
3,000 Service Hours 300,000 L (79,200 US gal) 396,000 L (105,600 US gal) 480,000 L (126,000 US gal) 600,000 L (158,400 US gal)
(1) Fuel consumption is based on a load factor of approximately 60 percent.Maintenance intervals must be reduced for engines that operate in a severe service application and for engines that operate in a different engine rating definition.Severe Service Application
Severe service operation can accelerate component wear. An engine which operates in a severe service application may need more frequent maintenance intervals for the following reasons:
Maximum reliability
Retention of full service lifeA severe service application is an application which exceeds the 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 to determine if your engine is operating within the defined parameters.Because of individual applications, identification all the factors which can contribute to severe operation is not possible. 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.Extreme Ambient Temperatures
Extended operation in environments known for extreme cold or hot can damage components. Valve components can be damaged by carbon buildup if the engine is frequently started and stopped environments known for extreme cold temperatures. Extremely hot inlet air reduces the performance capabilities of the engine.Note: See this Operation and Maintenance Manual, "Cold-Weather Operation" topic (Operation Section), or see 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. The aforementioned elements can make maintenance difficult. The buildup can contain corrosive chemicals. Corrosive chemicals and salt can damage some components.Improper Operating Procedures
Extended operation at low idle
Minimum cool down periods after high load factor operation
Operating the engine beyond the guidelines for the engine rating
Operating the engine at loads that are greater than