BODY-OIL PUMP 2321606 - Caterpillar

Refer to this Operation and Maintenance Manual, "Maintenance Recommendations" to determine the maintenance interval for a major overhaul.The need for a major overhaul is determined by several factors.
An increase of oil consumption
An increase of crankcase blowby
The total amount of fuel consumption
The service hours of the engine
The wear metal analysis of the lube oil
An increase in the levels of noise and vibrationAn increase of wear metals in the lube oil indicates that the bearings and the surfaces that wear may require service. An increase in the levels of noise and vibration indicates that rotating parts require service.Note: Oil analysis may indicate a decrease of wear metals in the lube oil. The cylinder liners may be worn so that polishing of the bore occurs. Also, the increased use of lube oil will dilute the wear metals.Monitor the engine as the engine accumulates service hours. Consult your Cat dealer about scheduling a major overhaul.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.A major overhaul includes all the work that is done for the top end overhaul. A major overhaul includes more parts and labor. More parts and labor are required to rebuild the engine.For the major overhaul, all the bearings, seals, gaskets, and components that wear are disassembled. The parts are cleaned and inspected. If necessary, the parts are replaced. The crankshaft is measured for wear. The crankshaft may require regrinding. Alternatively, the crankshaft may be replaced with a Cat replacement part.Your Cat dealer can provide these services and components. Your Cat dealer can ensure that the components are operating within the appropriate specifications.Replacement of Components
Replace the following components during the major overhaul:
Aftercooler core
Aftertreatment air regulator
Aftertreatment air strainer
Aftertreatment catalysts
Aftertreatment DEF nozzle
Aftertreatment DEF pump
Aftertreatment DEF strainer
Aftertreatment electrical harness
Aftertreatment sensors (temperature, level, and pressure)
Aftertreatment solenoid valve
Camshaft bearings
Camshaft thrust washer
Connecting rod bearings
Crankshaft seals
Crankshaft thrust washers
Crankshaft vibration damper bolts
Engine sensors (temperature, level, speed, and pressure)
Engine speed sensors
Engine wiring harness
Exhaust manifold bellows, clamps, bolts
Exhaust manifold seals
Flex pipe bellows and clamps
Flex pipe bellows heat shields
Flywheel bolts
Fuel injectors
Fuel transfer pump
Gear train bearings and bushings
High-pressure fuel lines
High-pressure fuel pump
Inlet manifold gaskets and seals
Main bearings
Oil cooler core
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.
Aftertreatment CEM structure
Camshaft followers
Connecting rods
Coolant temperature regulator(Jacket Water)
Crankshaft
Crankshaft vibration damper
Cylinder head assembly
Cylinder liners
Fuel pressure regulating valve inspect
Oil cooler bypass valve
Oil pressure regulating valve
Oil pump
Jacket water pump
Pistons
Piston pins
Prelube pump
SCAC water pump
Rocker arms
Rocker shafts
Starting motorsInspection 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".
Camshaft
Driven equipment (alignment)
Engine control module
Engine cylinder block
Engine heat shielding
Exhaust manifold
Exhaust bellows shields
Turbine