General Description - Isuzu C22NE Workshop Manual

6A-4 ENGINE MECHANICAL (C22NE, 22LE, 20LE)
Engine Cleanliness And Care
An automobile engine is a combination of many machined, honed, polished and lapped surfaces with tolerances that
are measured in the thousandths of a millimeter (ten thousandths of an inch). Accordingly, when any internal engine
parts are serviced, care and cleanliness are important. Throughout this section, it should be understood that proper
cleaning and protection of machined surfaces and friction areas is part of the repair procedure. This is considered
standard shop practice even if not specifically stated.


A liberal coating of engine oil should be applied to all friction areas during assembly to protect and lubricate
the surfaces on initial operation.


Whenever valve train components, pistons, piston rings, connecting rods, rod bearings, and crankshaft journal
bearings are removed for service, they should be retained in order.


At the time of installation, they should be installed in the same locations and with the same mating surfaced as
when removed.


Battery cables should be disconnected before any major work is performed on the engine. Failure to
disconnect cables may result in damage to wire harness or other electrical parts.


The four cylinders of this engine are identified by numbers; cylinders 1, 2, 3 and 4, as counted from crankshaft
pulley.
General Information on Engine Service
The following information on engine service should be noted carefully, as it is important in preventing damage and

GENERAL DESCRIPTION