COVER GP-VALVE MECHANISM 4373433 - Caterpillar

Replacement of Components
Replace the following worn components with new components during the in-frame overhaul.
Aftercooler core
Camshaft bearings
Camshaft thrust washers
Connecting rod bearings
Crankshaft thrust washers
Crankshaft vibration damper
Crankshaft seals
Electronic unit injectors
Exhaust system shields
Fuel rails
Gear train bushing and bearings
Main bearings
Piston rings
Pressure sensors
Temperature sensors
Turbocharger cartridgesInspection, Reconditioning, or Exchanging of Components
Inspect the following 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".Recondition the worn components or exchange the components, if necessary. Your Caterpillar dealer can provide these services and components.
Auxiliary water pump
Camshaft followers
Connecting rods
Critical fasteners
Cylinder head assembly
Cylinder liners
Engine mounts
Engine wiring harness
Fuel pressure regulating valve
Fuel priming pump
Fuel transfer pump
Inlet manifold gaskets
Inlet manifold seals
Oil cooler core
Oil pump
Pistons
Piston pins
Prelube pump
Push rods
Rocker arms
Software update
Spacer plate
Starter
Turbochargers
Water pumpInspection of Components
Inspect the following 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".
Camshaft
Crankshaft vibration damper
Driven equipment (alignment)
Engine control module
Front gear train
Oil screenInspect 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 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
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 a conventional heavy-duty antifreeze/coolant solution, check the concentration of supplemental coolant additive (SCA) regularly. The concentration of SCA can be checked with an S O S coolant analysis (Level I). 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 water in the coolant probably contained minerals which were deposited on the engine over a 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:
Caterpillar dealer
Local water utility company
Agricultural agent
Independent laboratoryCaterpillar