854051 Volvo.Penta Housing

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 outlet elbows
Flexible pipe heat shielding
Flywheel
Flywheel ring gear
Gear train front
Gear train rear
Front gear train (gears)
Inlet manifold
Rear gear train
SoftwareInspect the camshaft for damage to the journals and the lobes.Inspect 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 the crankshaft or the camshaft are removed for any reason, use the magnetic particle inspection process to check for cracks.Replace the crankshaft vibration damper if any of the following conditions occur:
Engine failure due to a broken crankshaft
Excessive wear of the front bearing for the crankshaft
Excessive wear of the gear train that is not caused by a lack of lubricationInspect the gears of the gear train and inspect the gear train bushings for the following conditions:
Worn gear teeth
Unusual fit
Unusual wearIn addition to the inspection of components, inspect the alignment of the driven equipment. See the Application and Installation Guide for the engine or see the literature that is provided by the OEM of the driven equipment.Cleaning of Components
Clean the oil cooler core and the aftercooler core. Then, pressure test both of these cores. For instructions on cleaning the cores, see this Operation and Maintenance Manual, "Aftercooler Core - Inspect/Clean" topic.Clean the oil suction screen. Also, remove side covers to clean the oil sump. For instructions on removal and installation of components, see the Service Manual, "Disassembly and Assembly" module.Obtain a Coolant Analysis
For conventional heavy-duty antifreeze/coolant, check the concentration of supplemental coolant additive (SCA) regularly. The concentration of SCA can be checked with an S O S coolant analysis (Level 1). A more detailed coolant analysis is recommended periodically.For example, considerable deposits are found in the water jacket areas on the external cooling system, but the concentrations of coolant additives were carefully maintained. The coolant water probably contained minerals which were deposited on the engine over time.A coolant analysis can be conducted to verify the condition of the water that is being used in the cooling system. A full water analysis may be obtained from the following sources:
Cat dealer
Local water utility company
Agricultural agent
Independent laboratoryCaterpillar recommends an S O S coolant analysis (Level II) which is a comprehensive chemical evaluation of the coolant. This analysis is also a check of the overall condition inside the cooling system. The following services are provided:
Full Level 1 analysis
Identification of the source of metal corrosion and of contaminants
Identification of buildup of the impurities that cause corrosion
Identification of buildup of the impurities that cause scaling
Determination of possible electrolysis within the engine cooling systemA report of the results of the analysis is provided. Maintenance recommendations are based on the results.For more information about S O S coolant analysis, consult your Cat dealer.