BRIDGE AS 8N7292 - Caterpillar

The maintenance intervals that are listed in this Operation and Maintenance Manual, "Maintenance Interval Schedule" are expressed in service hours. A more accurate figure to use is fuel consumption. Fuel consumption corresponds more accurately to the engine load.Table 1 lists average ranges of fuel consumption and service hours for a load factor of approximately 60 percent. Use the range of fuel consumption only as a guideline.
Table 1
Top End Overhaul
Service Hours and Fuel Consumption for 3516 Engines (1)    
Engine     Rated 1601 To 1800 RPM    
7500 Service Hours
3516    
1 942 000 L (512,500 US gal)    
Second Top End Overhaul    
Engine     15 000 Service Hours    
3516    
3 884 000 L (1,025,000 US gal)    
( 1 ) Fuel consumption is based on a load factor of approximately 60 percent.A top end overhaul involves the removal, the inspection, and the rework of the cylinder head components. Some additional components are replaced and serviced.Your Caterpillar dealer can provide these services and components. Your Caterpillar dealer can ensure that the components are operating within the appropriate specifications.Note: The driven equipment may also require service when the engine is overhauled. Refer to the literature that is provided by the OEM of the driven equipment.The following definitions explain the terminology for the services that are performed during an overhaul:Exchange - Your Caterpillar dealer will exchange your worn parts for parts that conform to original functional specifications.Inspect - Inspect the components according to the instructions that are in Caterpillar reusability publications. Refer to Guidelines for Reusable Parts and Salvage Operations, SEBF8029, "Index of Publications on Reusability or Salvage of Used Parts". The guidelines were developed in order to help Caterpillar dealers and customers to avoid unnecessary expenditures. New parts are not required if the existing parts can still be used, reconditioned, or repaired. If the components are not in the reusability guidelines, refer to the Service Manual, "Specifications" module.Install New - The service life of the part is exhausted. The part cannot be reconditioned. The replacement part must be a new part.Rebuild - The component is reconditioned in order to comply with reusability guidelines.Replace - The service life of the part is exhausted. The part must be replaced with a part that meets functional specifications. The replacement part may be a new part, a rebuilt part, or a used part.If you elect to perform an overhaul without the services of a Caterpillar dealer, be aware of the recommendations in Tables 2 and 3.
Table 2
Top End Overhaul (1)    
Clean     Oil suction screen    
Clean
Inspect
Pressure test     Aftercooler core (2)    
Exchange
Install new     Fuel injectors    
Inspect
Install new     Engine wiring harness    
Inspect
Rebuild     Rocker arms    
Inspect
Rebuild
Exchange     Cylinder head assemblies    
Fuel priming pump
Inspect
Replace     Fuel pressure regulating valve    
Pushrods
Spacer plates
Install new     Air inlet manifold (gaskets and seals)    
Exhaust manifold (seals and bellows)
( 1 ) For instructions on removal and installation of components, see the Service Manual, "Disassembly and Assembly"