Explanation Of Vehicle Maintenance And Log; Preventive Maintenance; Normal Vehicle Use - Isuzu NPR 2008 Owner's Manual

N-series medium duty truck (low cab forward)
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55702_Sec05-1_'08 08.2.12 9:49 AM Page 2
EXPLANATION OF VEHICLE
The following is a brief explanation of normal vehicle use.
NORMAL VEHICLE USE—The maintenance instructions contained in
this section are based on the assumption that your vehicle will be used
as designed:
To carry passengers and cargo with the limitations indicated on the
vehicle VIN and GVW plate.
On reasonable road surfaces within legal operating limits.
On a daily basis, as a general rule, for at least several miles/kilometers.
Unusual operating conditions, such as driving in dusty areas (sweeper,
agricultural or off-road vehicles), extended idling (refrigeration vehicles),
or vehicles operated for frequent short trips, will require more frequent
vehicle maintenance.
The log groups items according to mile/kilometer service intervals.
Use the item codes (letter and number) to find the description of the
maintenance and the time intervals. Follow whichever interval comes
first, time or miles/kilometers.
After the maintenance services are performed, insert the month, day
and mileage/kilometers in the area provided next to the serviced item.
The services shown up to 110,000 miles (176,000 kilometers) are to
be repeated after the initial 110,000 miles (176,000 kilometers) at the
same intervals.

PREVENTIVE MAINTENANCE

As any mechanical device operates, a certain amount of wear
occurs. The amount of wear depends on certain variables – type and
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
m a i n t e n a n c e c a n p r e v e n t m a l f u n c t i o n . A l s o , i f a p r e v e n t i v e
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 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 – damage that would not be covered under the New Vehicle
Warranty.
MAINTENANCE AND LOG
5-2

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