Emission System Maintenance Jobs - Mercedes-Benz M-Class Maintenance Booklet

Maintenance Booklet
Description of Emission System Maintenance Jobs
The composition of exhaust emissions is
influenced not only by the special emis-
sion control equipment, but also by vari-
ous engine components and their
adjustments.
Therefore, emission system maintenance
must include these engine components.
Some maintenance jobs are actually only
tests. They are important however, be-
cause they allow early detection of dis-
crepancies which can later lead to
increased exhaust emissions. It is gener-
ally less expensive to have such items ad-
justed immediately rather than allowing
them to contribute to costly repairs. The
maintenance intervals have been deter-
mined so that the vehicle, under normal
conditions, should operate properly be-
tween services.
66
0101 Engine oil and filter change
Change the engine oil and oil filter every
13,000 miles. If oil consumption should
increase, determine the cause and take
necessary corrective steps. Do not reset
the Maintenance System service indica-
tor if the oil is topped up or changed out-
side the interval of 13,000 miles.
0980 Replace air filter element
Under normal dust conditions, replace
air filter element approximately every
52,000 miles or 4 years. Clean air filter
cover and housing prior to removal of air
filter element.
0780 Replace fuel filter
Replace the fuel filter approximately eve-
ry 143,000 miles or 15 years.
1351 Check engine poly-V-belt condi-
tion
The poly-V-belt is subject to wear and ag-
ing. It must be checked for cracks and
wear at every service 2. Replace poly-V-
belt if necessary.
1580 Replace spark plugs
Spark plugs are subject to electrode ero-
sion and must be replaced according to
the mileage specified at Service 12, or
more frequently as may be required
when subject to severe operating condi-
tions.