CORE AS-O CLR 2316877 - 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.Refer to this Operation and Maintenance Manual, "Maintenance Recommendations" to determine the maintenance interval for an in-frame overhaul.Typically, an in-frame overhaul does not require the engine to be removed. Instead, the service is performed with the engine in place. If the customer requires a minimum disruption in the production of power, the engine can be replaced with a rebuilt model of identical specifications.Note: The generator or the driven equipment may also require service when the in-frame overhaul is performed.An in-frame overhaul includes all the work that is done for a top end overhaul. Also, some other components that wear are replaced. Some components are inspected for good condition. Some components are reconditioned or replaced, if necessary.Your Cat dealer can provide these services and components. Your Cat dealer can ensure that the components are operating within the appropriate specifications.If you elect to perform an in-frame overhaul without the services of a Cat dealer, be aware of the following recommendations.For instructions on removal and installation of components, see the Service Manual, "Disassembly and Assembly" module.Replacement of Components
Replace the following worn components with new components during the in-frame overhaul.
Aftercooler core
Aftertreatment catalysts
Aftertreatment sensors (Temperature, Level, Pressure)
Connecting rod bearings
Crankshaft seals
Crankshaft thrust washer
Crankshaft vibration damper bolts
Exhaust manifold bellows, clamps, bolts
Exhaust manifold seals
Common rail fuel injectors
Flex pipe bellows and clamps
Flex pipe bellows heat shields
Flywheel bolts
Fuel injectors
Fuel transfer pump
High-pressure fuel pump
Hydraulic Lash Adjusters(HLA) pushrods
Inlet manifold gaskets and seals
Main bearings
Piston rings
TurbochargerInspection, Reconditioning, or Exchanging of Components
Inspect the following components according to the instructions that are in Cat reusability publications. Refer to Guidelines for Reusable Parts and Salvage Operations, SEBF8029, "Index of Publications on Reusability or Salvage of Used Parts".Recondition the worn components or exchange the components, if necessary. Your Cat dealer can provide these services and components.
Camshaft followers
Coolant temperature regulator (Jacket Water)
Crankshaft vibration damper
Cylinder head assembly
Fuel pressure regulating valve
Jacket water pump
Oil cooler bypass valve
Oil cooler core
Oil pressure regulating valve
Pre-lube pump
Rocker shaft
Rocker arms
Starting motors
SCAC water pumpInspection of Components
Inspect the following components according to the instructions that are in Cat reusability publications. Refer to Guidelines for Reusable Parts and Salvage Operations, SEBF8029, "Index of Publications on Reusability or Salvage of Used Parts".
Aftertreatment air regulator
Aftertreatment air stainer
Aftertreatment DEF nozzle
Aftertreatment DEF strainer
Aftertreatment solenoid valve
Camshaft
Camshaft bearings
Crankshaft
Driven equipment (alignment)
Engine control module
Engine heat shielding
Engine wiring harness
Exhaust bellows shields
Exhaust manifold
Turbine outlet elbows
Flywheel
Flywheel ring gear
Flexible heat shielding
Front gear train
Gear train bushings and bearings
Gear train front
Gear train rear
High-pressure fuel lines
Inlet manifold
Oil pump
SoftwareInspect the camshaft for damage to the journals and the lobes. Inspect the following components for signs of wear and/or for signs of fatigue:
Camshaft bearings
Camshaft followersInspect the crankshaft for any of the following conditions:
Deflection
Damage to the journals
Bearing material that has seized to the journalsCheck the journal taper and the profile of the crankshaft journals. Check these components by interpreting the wear patterns on the following components:
Rod bearing
Main bearingsNote: If