Jeep Cherokee

 Service Manual

Engine » 2.5L engine » Service procedures
Service engine assembly (short block)

A service replacement engine assembly (short block) may be installed whenever the original cylinder block is defective or damaged beyond repair. It consists of the cylinder block, crankshaft, piston and rod assemblies. If needed, the camshaft must be procured separately and installed before the engine is installed in the vehicle.

A short block is identified with the letter "S" stamped on the same machined surface where the build date code is stamped for complete engine assemblies.

Installation includes the transfer of components from the defective or damaged original engine. Follow the appropriate procedures for cleaning, inspection and torque tightening.

Valve timing

Valve, guide and seal

Piston-fitting

Piston ring-fitting

Connecting rod bearings-fitting

Fitting crankshaft main bearings

Form-in-place gaskets

Engine performance

Honing cylinder bores

Repair damaged or worn threads

Service engine assembly (short block)

Hydrostatic lock

Engine oil service