20
2009
K
night
Chassis Information - 1
0
NOTE
Maintenance schedules are based on
normal operating conditions and use.
Operating under unusual or adverse
condition shortens service intervals.
INFORMATION
Engine and transmission service
intervals are listed in their respective
OEM manuals.
Proper Lubricant Waste Disposal:
When performing service maintenance on
the engine, transmission or rear axle, waste
fluids and filters should be properly disposed
of or recycled. Package used oils, antifreeze
and other fluids in sealed containers. In many
cases used oil is accepted free of charge at
county disposal sites. Waste fluids are toxic to
pets and other animals. Waste fluids should not
be left in open containers. The sweet odor of
antifreeze is attractive to pets, but highly toxic.
CAUTION
Properly dispose of used antifreeze
and waste oil. Animals like the sweet
odor of antifreeze and may ingest it
from open containers. Wipe up any
fluid spills. Pets may lie in puddles of
fluid, many of which are irritants and
can cause severe chemical burns if not
properly washed.
Lubricant Classification:
Lubricants are manufactured in many forms
for a variety of applications. There are many
different oil and grease consistencies each
with a designed application. To properly select
a particular type of lubricant for a specific
application, the component must be evaluated.
Component stress loads, ambient temperature,
working temperature and environmental
exposure are just a few of the variables to
consider. Select the proper lubricant for
its intended application. As an example:
selecting high viscosity grease to lubricate a
lock cylinder results in sluggish lock cylinder
operation especially in a cool environment.
Conversely, using graphite to lubricate a
component that is under extreme temperature
and load will result in component failure.
Grease ratings and their base compounds are
especially important when selecting a lubricant
type for an intended application. Some grease
compounds are manufactured for multi-use
application. These are acceptable if the grease
rating is in accordance with the manufacturer’s
recommended lubricant type and rating.
Lubricants:
Many chassis components require
lubrication. The types of lubricants used will
vary with the application of the component. A
component may fail prematurely due to lack of
lubrication or from using an incorrect lubricant
type. The component manufacturer usually
recommends a particular type of lubricant with
a minimum approval rating.
Most lubricants
are tested under strict guidelines set by the
ASTM (American Society for Testing and
Materials). The NLGI (National Lubricating
Grease Institute) helps disperse information
to the grease production industry. Grease
containers usually have an approval rating by
the SAE (Society of Automotive Engineers),
Mil Spec (Military Specification), API
(American Petroleum Institute) or by other
recognized and accepted organizations.
The correct lubricant type with an approved
specific rating must be used whenever
applying, changing or adding any lubricant.
When purchasing lubricants for a specific
application be sure the label affirms the type of
lubricant required with the tested rating by the
term “meets or exceeds” in accordance with
the manufacturer specifications.
Lubricating greases are made from different
base compounds giving the grease different
lubricating consistencies, properties and
maximum operating temperatures. Most
containers list the base compound and
maximum operating temperature usually listed
as melting point or drip point. Lubricating
components, such as brake component for
example, require a high temperature special
base compound grease. Lubricating this type
of component with other than specified grease
type will result in inadequate lubricating
qualities and component malfunction or
failure.
INSPECTION
When performing any scheduled
maintenance, inspect the area around
the work area. For example, changing
the oil, look at the rear differential.
Inspect for visual signs of fluid leaks.
Most fluids and lubricants have a distinct
odor, which can be used to detect early signs of
trouble. Generally, odors are most detectable
soon after parking. Unusual sounds are another
method of detecting a problem early. There
are many types of sounds that are normal,
such as the cyclic purging of the air dryer.
Become familiar with the different sounds.
If something sounds odd, smells peculiar or
looks unusual investigate the situation.
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