MANIFOLD 1P2568 - Caterpillar

Refer to this Operation and Maintenance Manual, "Overhaul Considerations" to determine the maintenance interval for a top end overhaul.A top end overhaul involves the removal, the inspection, and the rework of the cylinder head components. A few additional components are replaced and serviced.The top end overhaul (second interval) involves the same service that is performed for the first interval. Because of the number of service hours, some additional components are inspected and/or 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 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 to comply with reusability guidelines.Replace - The service life of the part is exhausted. The part may fail before the next maintenance interval. The part must be replaced with a part that meets functional specifications. The replacement part may be a new part, a CAT remanufactured part, a rebuilt part, or a used part. Some worn components may be exchanged with your Caterpillar dealer for credit on replacement parts. Consult your Caterpillar dealer about repair options for your engine.If you elect to perform an overhaul without the services of a Caterpillar dealer, be aware of the recommendations in Table 1 and Table 2.
Table 1
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