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314
Service and Maintenance
Preventive Maintenance
As any mechanical device operates, a certain
amount of wear occurs. The amount of wear
depends on certain variables
method of operation and the schedule of
maintenance. These variables may be
emphasized as critical to malfunction but
each is dependent upon the other. For
example, if a vehicle is repeatedly
overloaded, driven at excessive speed or
improperly shifted, no schedule of
maintenance can prevent malfunction. Also,
if a preventive maintenance schedule is not
followed, or is improperly carried out, no
amount of correct vehicle operation will
prevent malfunction.
If vehicle application, operation and
preventive maintenance schedules and
procedures are followed and properly carried
out, the life of the vehicle will be greatly
type and
extended.
For example, regular attention to the engine
oil is essential. The oil level must be
periodically checked and oil added whenever
needed. Also, the oil should be changed at
the intervals specified with the proper
quality and viscosity of oil. If your engine
should run excessively low on oil or if the
oil has lost its lubricating qualities because
of old age, serious engine damage could
occur.
Maintenance Schedule Table
Letters Used to Indicate Maintenance Service
Types
I : Inspect then clean, repair or replace as
necessary
A : Adjust
R : Replace
T : Tighten to the specified torque
L : Lubricate
C : Clean
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